Merge c25a5e670b into b510893d00

Merge bitcoin/bitcoin#33494 : depends: Update URL for `qrencode` package source tarball
93a70a42d3 depends: Update URL for `qrencode` package source tarball (Hennadii Stepanov) 6de8051263 depends: Use hash instead of file name for package download stamp (Hennadii Stepanov) 46135d90ea depends: Drop redundant check for downloaded file (Hennadii Stepanov) 771978952a depends: Fix `$(package)_fetched` target (Hennadii Stepanov) Pull request description: The https://fukuchi.org/ homepage no longer links to the source tarball, and previously available files appear to have been removed. The homepage now instructs users to download source tarballs from the GitHub [releases](https://github.com/fukuchi/libqrencode/releases) page instead. The diff between the source trees is immaterial: ```diff --- old +++ new @@ -1,19 +1,16 @@ 27e7deccd2925c94e4190ee64794a051199f215f145f76fd664cdebedbbf8a35 acinclude.m4 -e1e35b1309482f699a9700a2065a0bce09c2108dd1f78ba7bfbe0f7f0bdcd2e6 aclocal.m4 a9308eec78790720dbcd5452ab8f241b5f1c6939ccf3389917b8e78cb2b58c9e autogen.sh aa36725d577048f0370dc7415a1acb578fbdfb531c1b384a836d9360a81f6f5c bitstream.c 3feaacd7d096834fc5956215598564ec287ad443185c4433c3f8007cc53ceaa6 bitstream.h 21bd5a34c90d3d6ee540ceb48c3d5aea5f21bd6b829ef3112db832af0bd423d8 ChangeLog f8a7a94c9622fab721df47e8121533ebfcb79885aca01ecec2fff00dfb84caef cmake/FindIconv.cmake 6345e7eecb92473f361a8eb98dd373aa09cae79a43408cf4b42b00b411c9c197 CMakeLists.txt -031d560570eab2eda57c2f9ee9952445002f8bf4a23965fcaf43bbc2c61590e2 config.h.in -d2f42cc5771b69f2d2ecd4b31509864ae2b18b25c823986390bb372ee07030fa configure 02867a8ea08206c84d5f4c05f41a15c639291091e3dfac27f3a9029d8f5d3028 configure.ac a9bdde5616ecdd1e980b44f360600ee8783b1f99b8cc83a2beb163a0a390e861 COPYING 76c41754bccbf69a60fb7833776637c60b86f59104705c0a5cea9ee3a2968f3d Doxyfile 36d84f714cf28397b02d6c44860106a7cb858fc6d25239a2698a72fa5136e5c3 libqrencode.pc.in f0ce93a7e1b1f0fab87dd071ec3c8dd80a567d778dfc5930d9f375d676ecb9a0 Makefile.am -507c2385fb49c5724e8e3dfca97feb24cbdd4e651f3f0bfa62524e60088091a0 Makefile.in +dcb782b1b382328c0bce9194944bdcc65a6035d8e9f89e39436ed2e55ae8b969 makeREADME.sh 6046d347c6c564fc13a24dc0a15a09a83023e00a4e0d0f23029a81f86ac4d024 mask.c 9f853cee7d72191a8dbf018b7a86c0f0b6ca661e27a51fab677af911f2ff9e7e mask.h a4e17b68d8db573e152132ebcbdc837b55415c12027f81232662db645faf79f0 mmask.c @@ -30,7 +27,7 @@ 6e9ff66002b4a839c6e78bcd6a55342d9eb8b289273fa838441b27ee9969e293 qrinput.h 68831e02ee1ba602b1937328abec000e616c4472d9dc40067dd45ab7072df172 qrspec.c a2a9a5af4d62015e82b48b8316aea2b70031dcdc1ed2b829c0102ea5dc02aca2 qrspec.h -8730d006f1d45b90dc0ef9a20e4119420f15b37a09483c929baa4225e21f7900 README +a56773b55989ea5cae8a43f2d845ce0afa9576a26170937fbe36a69fee953cd4 README.md ace480f2e16001e276c73a5e965c282915ad81e2c28cce3ef574b5a8db7210e8 rsecc.c c731ebe26d58d5e5df3b2d694de0fb1c4ae80a36cf0559c49b04e989dee8b182 rsecc.h 8ed1af4414b5628845519581c82bf51ba2b4dee1f8352c1fd01b50afcd0a0ed7 split.c @@ -46,7 +43,6 @@ e26b20198a7393b3c060891876fa45edb81488aef9df6d6cf45893a605e5e5e4 tests/decoder.h adabfbddb0f25de2e2cae970195fcfdf11ad1fa66ce64e237d83f821346f64c4 tests/frame 23c283a3d3b5f1bbb3108603ebf05d7a95951ba86a288e09140eab612a5eb258 tests/Makefile.am -c8b819bf7f00c979ab0b6f0d0fb10289d2006bc6acda1737d2f1c383a60e1e66 tests/Makefile.in ebd71b937d4d39f382f8c57f362a01f11fd617b66dbdf6f1a3c4897c8c42e235 tests/prof_qrencode.c d4adcb234d4c31473cd9ffedd1bfa9645ba336d426640ba5893dfe6e75db171d tests/pthread_qrencode.c 62298641504b0a2c1d199cd7f656cb376959200169042de76f7c5950d2d42395 tests/rscode.c @@ -63,6 +59,7 @@ cf5792cbfb92ba46f7f5f14b98f00813b0e7e4f5e7c790c6a28793774474bf26 tests/test_monkey.c 3a2c58346d57f6bb2a634d6febf3c65ac524259a2d789657f8d60c678bf8d658 tests/test_mqrspec.c b9d8c569ba36a2258cb1ad0d1f85ce4fb2935fad519e902bade59aa9772321aa tests/test_qrencode.c +785fe14a6f8bc096b20ec271771fb09f22f29eb4f9d729f5b40d6b4cc824ce36 tests/test_qrenc.sh d0eee6eddf98ee4595c07f7da40c7de548651bf839b26995756e94db2599451f tests/test_qrinput.c ace7885e435ef77cc127da0ac23c724498aaa8d80d53b908063f79c9f0b7acce tests/test_qrspec.c fde9c2735ce94be51e1b0bbffe65415aa3afd2da5bd4c0e2c5e50e1a2f1ea3f7 tests/test_rs.c @@ -71,12 +68,4 @@ 6f35c0e1235b31d0068c4ab175d8110c736e60df0309d4be7b3e57dd62d316f6 tests/URI_testset.inc 6be3983fc397cd5dade1dd219ad6cbe7977f416410b1509984006ecec51605b5 tests/view_qrcode.c 92b5be1ca2239399232d51503715c848dae9bf3db71b1f03157bfa9779826910 TODO -c8af04e62bad4ab75dafd22119026e5e3943f385bdcbe7731a4938102453754c use/compile -1d9048b0ac9d4d1dfce7aa4e3a0b59ccfd32db2f7693814aa6f4c778560f5669 use/config.guess b522487f9c47661d321367d133f3d41247dd16d435f2d4b9c643dee95bf65eee use/config.rpath -5bf0da2576ebb21ab60a9d9291a85b40af0e956a9eafb709ca8b20dcb105f4ee use/config.sub -732bcd6b9e23f241e015d71b0a3a862104053aba20718c1f56b292cee7e29371 use/depcomp -608b76d735bb2ec2bcb1271644c3d5e7a428fb8d2338e114e8a48ebf91ccfd23 use/install-sh -2304d53af1f63b76a11651efdd18578adf2bda1ffc2c257100cba374b55f284b use/ltmain.sh -f038345dab184e538098d22a8edc423762da66a90ebe269f23bfef85287cd30c use/missing -7c1ae35455771ae32050c2ed109e3d297160b6d1a2f70b0278cf6968e5e7e98c use/test-driver ``` --- **UPDATE 2025-09-30** A few commits have been added: 1. The first commit fixes the `$(package)_fetched` target, which erroneously succeeds on the second run after a failure on the master branch: ``` $ gmake -C depends clean-all $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ echo $? 0 ``` With the first commit applied: ``` $ gmake -C depends clean-all $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ echo $? 2 ``` 2. The second and third commits allow the depends build subsystem to detect when the source tarball content has been modified and needs to be re-downloaded, even if the file name remains the same. ACKs for top commit: m3dwards: ACK 93a70a42d3 achow101: ACK 93a70a42d3 vasild: ACK 93a70a42d3 janb84: ACK 93a70a42d3 Tree-SHA512: 38b7c029070426196c747fc45c9d00bae534eeeb2d9cd9f221580fce8380f4f8aecb6c48b2563e322edd8c9534f5dd42d8f4e110ada42bb83568cf2dcfb7dc22
2025-10-08 02:01:27 +02:00 · 2025-10-07 16:57:58 -07:00 · 2025-10-08 00:44:05 +01:00 · 2025-10-07 14:51:22 -07:00 · 2025-10-07 13:54:25 -07:00 · 2025-10-02 10:34:12 -04:00
37 changed files with 512 additions and 209 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -211,11 +211,16 @@ jobs:
    steps:
      - *CHECKOUT

-      - name: Configure Developer Command Prompt for Microsoft Visual C++
-        # Using microsoft/setup-msbuild is not enough.
-        uses: ilammy/msvc-dev-cmd@v1
-        with:
-          arch: x64
+      - &SET_UP_VS
+        name: Set up VS Developer Prompt
+        shell: pwsh -Command "$PSVersionTable; $PSNativeCommandUseErrorActionPreference = $true; $ErrorActionPreference = 'Stop'; & '{0}'"
+        run: |
+          $vswherePath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+          $installationPath = & $vswherePath -latest -property installationPath
+          & "${env:COMSPEC}" /s /c "`"$installationPath\Common7\Tools\vsdevcmd.bat`" -arch=x64 -no_logo && set" | foreach-object {
+            $name, $value = $_ -split '=', 2
+            echo "$name=$value" >> $env:GITHUB_ENV
+          }

      - name: Get tool information
        shell: pwsh
@ -263,14 +268,26 @@ jobs:
        run: |
          cmake --build . -j $NUMBER_OF_PROCESSORS --config Release

-      - name: Get bitcoind manifest
+      - name: Check executable manifests
        if: matrix.job-type == 'standard'
        working-directory: build
+        shell: pwsh -Command "$PSVersionTable; $PSNativeCommandUseErrorActionPreference = $true; $ErrorActionPreference = 'Stop'; & '{0}'"
        run: |
-          mt.exe -nologo -inputresource:bin/Release/bitcoind.exe -out:bitcoind.manifest
-          cat bitcoind.manifest
-          echo
-          mt.exe -nologo -inputresource:bin/Release/bitcoind.exe -validate_manifest
+          mt.exe -nologo -inputresource:bin\Release\bitcoind.exe -out:bitcoind.manifest
+          Get-Content bitcoind.manifest
+
+          Get-ChildItem -Filter "bin\Release\*.exe" | ForEach-Object {
+            $exeName = $_.Name
+
+            # Skip as they currently do not have manifests
+            if ($exeName -eq "fuzz.exe" -or $exeName -eq "bench_bitcoin.exe" -or $exeName -eq "test_bitcoin-qt.exe") {
+              Write-Host "Skipping $exeName (no manifest present)"
+              return
+            }
+
+            Write-Host "Checking $exeName"
+            & mt.exe -nologo -inputresource:$_.FullName -validate_manifest
+          }

      - name: Run test suite
        if: matrix.job-type == 'standard'
@ -370,19 +387,26 @@ jobs:
      - name: Run bitcoind.exe
        run: ./bin/bitcoind.exe -version

-      - name: Find mt.exe tool
-        shell: pwsh
-        run: |
-          $sdk_dir = (Get-ItemProperty 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows Kits\Installed Roots' -Name KitsRoot10).KitsRoot10
-          $sdk_latest = (Get-ChildItem "$sdk_dir\bin" -Directory | Where-Object { $_.Name -match '^\d+\.\d+\.\d+\.\d+$' } | Sort-Object Name -Descending | Select-Object -First 1).Name
-          "MT_EXE=${sdk_dir}bin\${sdk_latest}\x64\mt.exe" >> $env:GITHUB_ENV
+      - *SET_UP_VS

-      - name: Get bitcoind manifest
-        shell: pwsh
+      - name: Check executable manifests
+        shell: pwsh -Command "$PSVersionTable; $PSNativeCommandUseErrorActionPreference = $true; $ErrorActionPreference = 'Stop'; & '{0}'"
        run: |
-          & $env:MT_EXE -nologo -inputresource:bin\bitcoind.exe -out:bitcoind.manifest
+          mt.exe -nologo -inputresource:bin\bitcoind.exe -out:bitcoind.manifest
          Get-Content bitcoind.manifest
-          & $env:MT_EXE -nologo -inputresource:bin\bitcoind.exe -validate_manifest
+
+          Get-ChildItem -Filter "bin\*.exe" | ForEach-Object {
+            $exeName = $_.Name
+
+            # Skip as they currently do not have manifests
+            if ($exeName -eq "fuzz.exe" -or $exeName -eq "bench_bitcoin.exe") {
+              Write-Host "Skipping $exeName (no manifest present)"
+              return
+            }
+
+            Write-Host "Checking $exeName"
+            & mt.exe -nologo -inputresource:$_.FullName -validate_manifest
+          }

      - name: Run unit tests
        # Can't use ctest here like other jobs as we don't have a CMake build tree.
--- a/depends/funcs.mk
+++ b/depends/funcs.mk
@ -36,9 +36,8 @@ define fetch_file_inner
 endef

 define fetch_file
-    ( test -f $$($(1)_source_dir)/$(4) || \
    ( $(call fetch_file_inner,$(1),$(2),$(3),$(4),$(5)) || \
-      $(call fetch_file_inner,$(1),$(FALLBACK_DOWNLOAD_PATH),$(3),$(4),$(5))))
+      $(call fetch_file_inner,$(1),$(FALLBACK_DOWNLOAD_PATH),$(3),$(4),$(5)))
 endef

 # Shell script to create a source tarball in $(1)_source from local directory
@ -109,7 +108,7 @@ $(1)_prefixbin:=$($($(1)_type)_prefix)/bin/
 $(1)_all_sources=$($(1)_file_name) $($(1)_extra_sources)

 #stamps
-$(1)_fetched=$(SOURCES_PATH)/download-stamps/.stamp_fetched-$(1)-$($(1)_file_name).hash
+$(1)_fetched=$(SOURCES_PATH)/download-stamps/.stamp_fetched-$(1)-$($(1)_version)-$($(1)_sha256_hash).hash
 $(1)_extracted=$$($(1)_extract_dir)/.stamp_extracted
 $(1)_preprocessed=$$($(1)_extract_dir)/.stamp_preprocessed
 $(1)_cleaned=$$($(1)_extract_dir)/.stamp_cleaned
@ -247,7 +246,6 @@ endif
 $($(1)_fetched):
 	mkdir -p $$(@D) $(SOURCES_PATH)
 	rm -f $$@
-	touch $$@
 	cd $$(@D); $($(1)_fetch_cmds)
 	cd $($(1)_source_dir); $(foreach source,$($(1)_all_sources),$(build_SHA256SUM) $(source) >> $$(@);)
 	touch $$@
--- a/depends/packages/qrencode.mk
+++ b/depends/packages/qrencode.mk
@ -1,8 +1,9 @@
 package=qrencode
 $(package)_version=4.1.1
-$(package)_download_path=https://fukuchi.org/works/qrencode/
+$(package)_download_path=https://github.com/fukuchi/libqrencode/archive/refs/tags/
+$(package)_download_file=v$($(package)_version).tar.gz
 $(package)_file_name=$(package)-$($(package)_version).tar.gz
-$(package)_sha256_hash=da448ed4f52aba6bcb0cd48cac0dd51b8692bccc4cd127431402fca6f8171e8e
+$(package)_sha256_hash=5385bc1b8c2f20f3b91d258bf8ccc8cf62023935df2d2676b5b67049f31a049c
 $(package)_patches=cmake_fixups.patch

 define $(package)_set_vars
--- a/src/bench/verify_script.cpp
+++ b/src/bench/verify_script.cpp
@ -24,7 +24,7 @@ static void VerifyScriptBench(benchmark::Bench& bench)
 {
    ECC_Context ecc_context{};

-    const uint32_t flags{SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH};
+    const script_verify_flags flags{SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH};
    const int witnessversion = 0;

    // Key pair.
--- a/src/chain.cpp
+++ b/src/chain.cpp
@ -5,6 +5,7 @@

 #include <chain.h>
 #include <tinyformat.h>
+#include <util/check.h>
 #include <util/time.h>

 std::string CBlockFileInfo::ToString() const
@ -158,18 +159,26 @@ int64_t GetBlockProofEquivalentTime(const CBlockIndex& to, const CBlockIndex& fr
 /** Find the last common ancestor two blocks have.
 *  Both pa and pb must be non-nullptr. */
 const CBlockIndex* LastCommonAncestor(const CBlockIndex* pa, const CBlockIndex* pb) {
+    // First rewind to the last common height (the forking point cannot be past one of the two).
    if (pa->nHeight > pb->nHeight) {
        pa = pa->GetAncestor(pb->nHeight);
    } else if (pb->nHeight > pa->nHeight) {
        pb = pb->GetAncestor(pa->nHeight);
    }
-
-    while (pa != pb && pa && pb) {
+    while (pa != pb) {
+        // Jump back until pa and pb have a common "skip" ancestor.
+        while (pa->pskip != pb->pskip) {
+            // This logic relies on the property that equal-height blocks have equal-height skip
+            // pointers.
+            Assume(pa->nHeight == pb->nHeight);
+            Assume(pa->pskip->nHeight == pb->pskip->nHeight);
+            pa = pa->pskip;
+            pb = pb->pskip;
+        }
+        // At this point, pa and pb are different, but have equal pskip. The forking point lies in
+        // between pa/pb on the one end, and pa->pskip/pb->pskip on the other end.
        pa = pa->pprev;
        pb = pb->pprev;
    }
-
-    // Eventually all chain branches meet at the genesis block.
-    assert(pa == pb);
    return pa;
 }
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@ -6,6 +6,7 @@
 #ifndef BITCOIN_CONSENSUS_PARAMS_H
 #define BITCOIN_CONSENSUS_PARAMS_H

+#include <script/verify_flags.h>
 #include <uint256.h>

 #include <array>
@ -89,7 +90,7 @@ struct Params {
     * - buried in the chain, and
     * - fail if the default script verify flags are applied.
     */
-    std::map<uint256, uint32_t> script_flag_exceptions;
+    std::map<uint256, script_verify_flags> script_flag_exceptions;
    /** Block height and hash at which BIP34 becomes active */
    int BIP34Height;
    uint256 BIP34Hash;
--- a/src/consensus/tx_verify.cpp
+++ b/src/consensus/tx_verify.cpp
@ -140,7 +140,7 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& in
    return nSigOps;
 }

-int64_t GetTransactionSigOpCost(const CTransaction& tx, const CCoinsViewCache& inputs, uint32_t flags)
+int64_t GetTransactionSigOpCost(const CTransaction& tx, const CCoinsViewCache& inputs, script_verify_flags flags)
 {
    int64_t nSigOps = GetLegacySigOpCount(tx) * WITNESS_SCALE_FACTOR;

--- a/src/consensus/tx_verify.h
+++ b/src/consensus/tx_verify.h
@ -6,6 +6,7 @@
 #define BITCOIN_CONSENSUS_TX_VERIFY_H

 #include <consensus/amount.h>
+#include <script/verify_flags.h>

 #include <cstdint>
 #include <vector>
@ -52,7 +53,7 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& ma
 * @param[in] flags Script verification flags
 * @return Total signature operation cost of tx
 */
-int64_t GetTransactionSigOpCost(const CTransaction& tx, const CCoinsViewCache& inputs, uint32_t flags);
+int64_t GetTransactionSigOpCost(const CTransaction& tx, const CCoinsViewCache& inputs, script_verify_flags flags);

 /**
 * Check if transaction is final and can be included in a block with the
--- a/src/deploymentinfo.h
+++ b/src/deploymentinfo.h
@ -8,8 +8,10 @@
 #include <consensus/params.h>

 #include <array>
+#include <cassert>
 #include <optional>
 #include <string>
+#include <string_view>

 struct VBDeploymentInfo {
    /** Deployment name */
--- a/src/init.cpp
+++ b/src/init.cpp
@ -215,8 +215,6 @@ void InitContext(NodeContext& node)
    node.shutdown_request = [&node] {
        assert(node.shutdown_signal);
        if (!(*node.shutdown_signal)()) return false;
-        // Wake any threads that may be waiting for the tip to change.
-        if (node.notifications) WITH_LOCK(node.notifications->m_tip_block_mutex, node.notifications->m_tip_block_cv.notify_all());
        return true;
    };
 }
@ -267,6 +265,8 @@ void Interrupt(NodeContext& node)
 #if HAVE_SYSTEM
    ShutdownNotify(*node.args);
 #endif
+    // Wake any threads that may be waiting for the tip to change.
+    if (node.notifications) WITH_LOCK(node.notifications->m_tip_block_mutex, node.notifications->m_tip_block_cv.notify_all());
    InterruptHTTPServer();
    InterruptHTTPRPC();
    InterruptRPC();
--- a/src/node/interfaces.cpp
+++ b/src/node/interfaces.cpp
@ -132,7 +132,6 @@ public:
    }
    void appShutdown() override
    {
-        Interrupt(*m_context);
        Shutdown(*m_context);
    }
    void startShutdown() override
@ -141,12 +140,7 @@ public:
        if (!(Assert(ctx.shutdown_request))()) {
            LogError("Failed to send shutdown signal\n");
        }
-
-        // Stop RPC for clean shutdown if any of waitfor* commands is executed.
-        if (args().GetBoolArg("-server", false)) {
-            InterruptRPC();
-            StopRPC();
-        }
+        Interrupt(*m_context);
    }
    bool shutdownRequested() override { return ShutdownRequested(*Assert(m_context)); };
    bool isSettingIgnored(const std::string& name) override
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@ -98,7 +98,7 @@ static constexpr unsigned int MAX_DUST_OUTPUTS_PER_TX{1};
 * Note that this does not affect consensus validity; see GetBlockScriptFlags()
 * for that.
 */
-static constexpr unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS{SCRIPT_VERIFY_P2SH |
+static constexpr script_verify_flags MANDATORY_SCRIPT_VERIFY_FLAGS{SCRIPT_VERIFY_P2SH |
                                                             SCRIPT_VERIFY_DERSIG |
                                                             SCRIPT_VERIFY_NULLDUMMY |
                                                             SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY |
@ -112,7 +112,7 @@ static constexpr unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS{SCRIPT_VERIFY_P2SH |
 * the additional (non-mandatory) rules here, to improve forwards and
 * backwards compatibility.
 */
-static constexpr unsigned int STANDARD_SCRIPT_VERIFY_FLAGS{MANDATORY_SCRIPT_VERIFY_FLAGS |
+static constexpr script_verify_flags STANDARD_SCRIPT_VERIFY_FLAGS{MANDATORY_SCRIPT_VERIFY_FLAGS |
                                                             SCRIPT_VERIFY_STRICTENC |
                                                             SCRIPT_VERIFY_MINIMALDATA |
                                                             SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS |
@ -128,7 +128,7 @@ static constexpr unsigned int STANDARD_SCRIPT_VERIFY_FLAGS{MANDATORY_SCRIPT_VERI
                                                             SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_PUBKEYTYPE};

 /** For convenience, standard but not mandatory verify flags. */
-static constexpr unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS{STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS};
+static constexpr script_verify_flags STANDARD_NOT_MANDATORY_VERIFY_FLAGS{STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS};

 /** Used as the flags parameter to sequence and nLocktime checks in non-consensus code. */
 static constexpr unsigned int STANDARD_LOCKTIME_VERIFY_FLAGS{LOCKTIME_VERIFY_SEQUENCE};
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@ -1469,6 +1469,9 @@ RPCHelpMan getdeploymentinfo()
            RPCResult::Type::OBJ, "", "", {
                {RPCResult::Type::STR, "hash", "requested block hash (or tip)"},
                {RPCResult::Type::NUM, "height", "requested block height (or tip)"},
+                {RPCResult::Type::ARR, "script_flags", "script verify flags for the block", {
+                    {RPCResult::Type::STR, "flag", "a script verify flag"},
+                }},
                {RPCResult::Type::OBJ_DYN, "deployments", "", {
                    {RPCResult::Type::OBJ, "xxxx", "name of the deployment", RPCHelpForDeployment}
                }},
@ -1495,6 +1498,12 @@ RPCHelpMan getdeploymentinfo()
            UniValue deploymentinfo(UniValue::VOBJ);
            deploymentinfo.pushKV("hash", blockindex->GetBlockHash().ToString());
            deploymentinfo.pushKV("height", blockindex->nHeight);
+            {
+                const auto flagnames = GetScriptFlagNames(GetBlockScriptFlags(*blockindex, chainman));
+                UniValue uv_flagnames(UniValue::VARR);
+                uv_flagnames.push_backV(flagnames.begin(), flagnames.end());
+                deploymentinfo.pushKV("script_flags", uv_flagnames);
+            }
            deploymentinfo.pushKV("deployments", DeploymentInfo(blockindex, chainman));
            return deploymentinfo;
        },
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@ -10,6 +10,7 @@
 #include <crypto/sha256.h>
 #include <pubkey.h>
 #include <script/script.h>
+#include <tinyformat.h>
 #include <uint256.h>

 typedef std::vector<unsigned char> valtype;
@ -197,7 +198,7 @@ bool static IsDefinedHashtypeSignature(const valtype &vchSig) {
    return true;
 }

-bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, unsigned int flags, ScriptError* serror) {
+bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, script_verify_flags flags, ScriptError* serror) {
    // Empty signature. Not strictly DER encoded, but allowed to provide a
    // compact way to provide an invalid signature for use with CHECK(MULTI)SIG
    if (vchSig.size() == 0) {
@ -214,7 +215,7 @@ bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, unsigned i
    return true;
 }

-bool static CheckPubKeyEncoding(const valtype &vchPubKey, unsigned int flags, const SigVersion &sigversion, ScriptError* serror) {
+bool static CheckPubKeyEncoding(const valtype &vchPubKey, script_verify_flags flags, const SigVersion &sigversion, ScriptError* serror) {
    if ((flags & SCRIPT_VERIFY_STRICTENC) != 0 && !IsCompressedOrUncompressedPubKey(vchPubKey)) {
        return set_error(serror, SCRIPT_ERR_PUBKEYTYPE);
    }
@ -317,7 +318,7 @@ public:
 };
 }

-static bool EvalChecksigPreTapscript(const valtype& vchSig, const valtype& vchPubKey, CScript::const_iterator pbegincodehash, CScript::const_iterator pend, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& fSuccess)
+static bool EvalChecksigPreTapscript(const valtype& vchSig, const valtype& vchPubKey, CScript::const_iterator pbegincodehash, CScript::const_iterator pend, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& fSuccess)
 {
    assert(sigversion == SigVersion::BASE || sigversion == SigVersion::WITNESS_V0);

@ -343,7 +344,7 @@ static bool EvalChecksigPreTapscript(const valtype& vchSig, const valtype& vchPu
    return true;
 }

-static bool EvalChecksigTapscript(const valtype& sig, const valtype& pubkey, ScriptExecutionData& execdata, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& success)
+static bool EvalChecksigTapscript(const valtype& sig, const valtype& pubkey, ScriptExecutionData& execdata, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& success)
 {
    assert(sigversion == SigVersion::TAPSCRIPT);

@ -388,7 +389,7 @@ static bool EvalChecksigTapscript(const valtype& sig, const valtype& pubkey, Scr
 * A return value of false means the script fails entirely. When true is returned, the
 * success variable indicates whether the signature check itself succeeded.
 */
-static bool EvalChecksig(const valtype& sig, const valtype& pubkey, CScript::const_iterator pbegincodehash, CScript::const_iterator pend, ScriptExecutionData& execdata, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& success)
+static bool EvalChecksig(const valtype& sig, const valtype& pubkey, CScript::const_iterator pbegincodehash, CScript::const_iterator pend, ScriptExecutionData& execdata, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror, bool& success)
 {
    switch (sigversion) {
    case SigVersion::BASE:
@ -403,7 +404,7 @@ static bool EvalChecksig(const valtype& sig, const valtype& pubkey, CScript::con
    assert(false);
 }

-bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptExecutionData& execdata, ScriptError* serror)
+bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptExecutionData& execdata, ScriptError* serror)
 {
    static const CScriptNum bnZero(0);
    static const CScriptNum bnOne(1);
@ -1233,7 +1234,7 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
    return set_success(serror);
 }

-bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror)
+bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* serror)
 {
    ScriptExecutionData execdata;
    return EvalScript(stack, script, flags, checker, sigversion, execdata, serror);
@ -1824,7 +1825,7 @@ bool GenericTransactionSignatureChecker<T>::CheckSequence(const CScriptNum& nSeq
 template class GenericTransactionSignatureChecker<CTransaction>;
 template class GenericTransactionSignatureChecker<CMutableTransaction>;

-static bool ExecuteWitnessScript(const std::span<const valtype>& stack_span, const CScript& exec_script, unsigned int flags, SigVersion sigversion, const BaseSignatureChecker& checker, ScriptExecutionData& execdata, ScriptError* serror)
+static bool ExecuteWitnessScript(const std::span<const valtype>& stack_span, const CScript& exec_script, script_verify_flags flags, SigVersion sigversion, const BaseSignatureChecker& checker, ScriptExecutionData& execdata, ScriptError* serror)
 {
    std::vector<valtype> stack{stack_span.begin(), stack_span.end()};

@ -1909,7 +1910,7 @@ static bool VerifyTaprootCommitment(const std::vector<unsigned char>& control, c
    return q.CheckTapTweak(p, merkle_root, control[0] & 1);
 }

-static bool VerifyWitnessProgram(const CScriptWitness& witness, int witversion, const std::vector<unsigned char>& program, unsigned int flags, const BaseSignatureChecker& checker, ScriptError* serror, bool is_p2sh)
+static bool VerifyWitnessProgram(const CScriptWitness& witness, int witversion, const std::vector<unsigned char>& program, script_verify_flags flags, const BaseSignatureChecker& checker, ScriptError* serror, bool is_p2sh)
 {
    CScript exec_script; //!< Actually executed script (last stack item in P2WSH; implied P2PKH script in P2WPKH; leaf script in P2TR)
    std::span stack{witness.stack};
@ -1994,7 +1995,7 @@ static bool VerifyWitnessProgram(const CScriptWitness& witness, int witversion,
    // There is intentionally no return statement here, to be able to use "control reaches end of non-void function" warnings to detect gaps in the logic above.
 }

-bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, unsigned int flags, const BaseSignatureChecker& checker, ScriptError* serror)
+bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, script_verify_flags flags, const BaseSignatureChecker& checker, ScriptError* serror)
 {
    static const CScriptWitness emptyWitness;
    if (witness == nullptr) {
@ -2131,7 +2132,7 @@ size_t static WitnessSigOps(int witversion, const std::vector<unsigned char>& wi
    return 0;
 }

-size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, unsigned int flags)
+size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, script_verify_flags flags)
 {
    static const CScriptWitness witnessEmpty;

@ -2161,3 +2162,48 @@ size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey,

    return 0;
 }
+
+#define FLAG_NAME(flag) {std::string(#flag), SCRIPT_VERIFY_##flag}
+const std::map<std::string, script_verify_flag_name> g_verify_flag_names{
+    FLAG_NAME(P2SH),
+    FLAG_NAME(STRICTENC),
+    FLAG_NAME(DERSIG),
+    FLAG_NAME(LOW_S),
+    FLAG_NAME(SIGPUSHONLY),
+    FLAG_NAME(MINIMALDATA),
+    FLAG_NAME(NULLDUMMY),
+    FLAG_NAME(DISCOURAGE_UPGRADABLE_NOPS),
+    FLAG_NAME(CLEANSTACK),
+    FLAG_NAME(MINIMALIF),
+    FLAG_NAME(NULLFAIL),
+    FLAG_NAME(CHECKLOCKTIMEVERIFY),
+    FLAG_NAME(CHECKSEQUENCEVERIFY),
+    FLAG_NAME(WITNESS),
+    FLAG_NAME(DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM),
+    FLAG_NAME(WITNESS_PUBKEYTYPE),
+    FLAG_NAME(CONST_SCRIPTCODE),
+    FLAG_NAME(TAPROOT),
+    FLAG_NAME(DISCOURAGE_UPGRADABLE_PUBKEYTYPE),
+    FLAG_NAME(DISCOURAGE_OP_SUCCESS),
+    FLAG_NAME(DISCOURAGE_UPGRADABLE_TAPROOT_VERSION),
+};
+#undef FLAG_NAME
+
+std::vector<std::string> GetScriptFlagNames(script_verify_flags flags)
+{
+    std::vector<std::string> res;
+    if (flags == SCRIPT_VERIFY_NONE) {
+        return res;
+    }
+    script_verify_flags leftover = flags;
+    for (const auto& [name, flag] : g_verify_flag_names) {
+        if ((flags & flag) != 0) {
+            res.push_back(name);
+            leftover &= ~flag;
+        }
+    }
+    if (leftover != 0) {
+        res.push_back(strprintf("0x%08x", leftover.as_int()));
+    }
+    return res;
+}
--- a/src/script/interpreter.h
+++ b/src/script/interpreter.h
@ -10,6 +10,7 @@
 #include <hash.h>
 #include <primitives/transaction.h>
 #include <script/script_error.h> // IWYU pragma: export
+#include <script/verify_flags.h> // IWYU pragma: export
 #include <span.h>
 #include <uint256.h>

@ -42,35 +43,36 @@ enum
 *  All flags are intended to be soft forks: the set of acceptable scripts under
 *  flags (A | B) is a subset of the acceptable scripts under flag (A).
 */
-enum : uint32_t {
-    SCRIPT_VERIFY_NONE      = 0,

+static constexpr script_verify_flags SCRIPT_VERIFY_NONE{0};
+
+enum class script_verify_flag_name : uint8_t {
    // Evaluate P2SH subscripts (BIP16).
-    SCRIPT_VERIFY_P2SH      = (1U << 0),
+    SCRIPT_VERIFY_P2SH,

    // Passing a non-strict-DER signature or one with undefined hashtype to a checksig operation causes script failure.
    // Evaluating a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) by checksig causes script failure.
    // (not used or intended as a consensus rule).
-    SCRIPT_VERIFY_STRICTENC = (1U << 1),
+    SCRIPT_VERIFY_STRICTENC,

    // Passing a non-strict-DER signature to a checksig operation causes script failure (BIP62 rule 1)
-    SCRIPT_VERIFY_DERSIG    = (1U << 2),
+    SCRIPT_VERIFY_DERSIG,

    // Passing a non-strict-DER signature or one with S > order/2 to a checksig operation causes script failure
    // (BIP62 rule 5).
-    SCRIPT_VERIFY_LOW_S     = (1U << 3),
+    SCRIPT_VERIFY_LOW_S,

    // verify dummy stack item consumed by CHECKMULTISIG is of zero-length (BIP62 rule 7).
-    SCRIPT_VERIFY_NULLDUMMY = (1U << 4),
+    SCRIPT_VERIFY_NULLDUMMY,

    // Using a non-push operator in the scriptSig causes script failure (BIP62 rule 2).
-    SCRIPT_VERIFY_SIGPUSHONLY = (1U << 5),
+    SCRIPT_VERIFY_SIGPUSHONLY,

    // Require minimal encodings for all push operations (OP_0... OP_16, OP_1NEGATE where possible, direct
    // pushes up to 75 bytes, OP_PUSHDATA up to 255 bytes, OP_PUSHDATA2 for anything larger). Evaluating
    // any other push causes the script to fail (BIP62 rule 3).
    // In addition, whenever a stack element is interpreted as a number, it must be of minimal length (BIP62 rule 4).
-    SCRIPT_VERIFY_MINIMALDATA = (1U << 6),
+    SCRIPT_VERIFY_MINIMALDATA,

    // Discourage use of NOPs reserved for upgrades (NOP1-10)
    //
@ -82,7 +84,7 @@ enum : uint32_t {
    // executed, e.g.  within an unexecuted IF ENDIF block, are *not* rejected.
    // NOPs that have associated forks to give them new meaning (CLTV, CSV)
    // are not subject to this rule.
-    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS  = (1U << 7),
+    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS,

    // Require that only a single stack element remains after evaluation. This changes the success criterion from
    // "At least one stack element must remain, and when interpreted as a boolean, it must be true" to
@ -91,64 +93,72 @@ enum : uint32_t {
    // Note: CLEANSTACK should never be used without P2SH or WITNESS.
    // Note: WITNESS_V0 and TAPSCRIPT script execution have behavior similar to CLEANSTACK as part of their
    //       consensus rules. It is automatic there and does not need this flag.
-    SCRIPT_VERIFY_CLEANSTACK = (1U << 8),
+    SCRIPT_VERIFY_CLEANSTACK,

    // Verify CHECKLOCKTIMEVERIFY
    //
    // See BIP65 for details.
-    SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1U << 9),
+    SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY,

    // support CHECKSEQUENCEVERIFY opcode
    //
    // See BIP112 for details
-    SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1U << 10),
+    SCRIPT_VERIFY_CHECKSEQUENCEVERIFY,

    // Support segregated witness
    //
-    SCRIPT_VERIFY_WITNESS = (1U << 11),
+    SCRIPT_VERIFY_WITNESS,

    // Making v1-v16 witness program non-standard
    //
-    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM = (1U << 12),
+    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM,

    // Segwit script only: Require the argument of OP_IF/NOTIF to be exactly 0x01 or empty vector
    //
    // Note: TAPSCRIPT script execution has behavior similar to MINIMALIF as part of its consensus
    //       rules. It is automatic there and does not depend on this flag.
-    SCRIPT_VERIFY_MINIMALIF = (1U << 13),
+    SCRIPT_VERIFY_MINIMALIF,

    // Signature(s) must be empty vector if a CHECK(MULTI)SIG operation failed
    //
-    SCRIPT_VERIFY_NULLFAIL = (1U << 14),
+    SCRIPT_VERIFY_NULLFAIL,

    // Public keys in segregated witness scripts must be compressed
    //
-    SCRIPT_VERIFY_WITNESS_PUBKEYTYPE = (1U << 15),
+    SCRIPT_VERIFY_WITNESS_PUBKEYTYPE,

    // Making OP_CODESEPARATOR and FindAndDelete fail any non-segwit scripts
    //
-    SCRIPT_VERIFY_CONST_SCRIPTCODE = (1U << 16),
+    SCRIPT_VERIFY_CONST_SCRIPTCODE,

    // Taproot/Tapscript validation (BIPs 341 & 342)
    //
-    SCRIPT_VERIFY_TAPROOT = (1U << 17),
+    SCRIPT_VERIFY_TAPROOT,

    // Making unknown Taproot leaf versions non-standard
    //
-    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION = (1U << 18),
+    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION,

    // Making unknown OP_SUCCESS non-standard
-    SCRIPT_VERIFY_DISCOURAGE_OP_SUCCESS = (1U << 19),
+    SCRIPT_VERIFY_DISCOURAGE_OP_SUCCESS,

    // Making unknown public key versions (in BIP 342 scripts) non-standard
-    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_PUBKEYTYPE = (1U << 20),
+    SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_PUBKEYTYPE,

    // Constants to point to the highest flag in use. Add new flags above this line.
    //
    SCRIPT_VERIFY_END_MARKER
 };
+using enum script_verify_flag_name;

-bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, unsigned int flags, ScriptError* serror);
+static constexpr int MAX_SCRIPT_VERIFY_FLAGS_BITS = static_cast<int>(SCRIPT_VERIFY_END_MARKER);
+
+// assert there is still a spare bit
+static_assert(0 < MAX_SCRIPT_VERIFY_FLAGS_BITS && MAX_SCRIPT_VERIFY_FLAGS_BITS <= 63);
+
+static constexpr script_verify_flags::value_type MAX_SCRIPT_VERIFY_FLAGS = ((script_verify_flags::value_type{1} << MAX_SCRIPT_VERIFY_FLAGS_BITS) - 1);
+
+bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, script_verify_flags flags, ScriptError* serror);

 struct PrecomputedTransactionData
 {
@ -363,12 +373,16 @@ uint256 ComputeTapbranchHash(std::span<const unsigned char> a, std::span<const u
 *  Requires control block to have valid length (33 + k*32, with k in {0,1,..,128}). */
 uint256 ComputeTaprootMerkleRoot(std::span<const unsigned char> control, const uint256& tapleaf_hash);

-bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptExecutionData& execdata, ScriptError* error = nullptr);
-bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, unsigned int flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* error = nullptr);
-bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, unsigned int flags, const BaseSignatureChecker& checker, ScriptError* serror = nullptr);
+bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptExecutionData& execdata, ScriptError* error = nullptr);
+bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, script_verify_flags flags, const BaseSignatureChecker& checker, SigVersion sigversion, ScriptError* error = nullptr);
+bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, script_verify_flags flags, const BaseSignatureChecker& checker, ScriptError* serror = nullptr);

-size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, unsigned int flags);
+size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey, const CScriptWitness* witness, script_verify_flags flags);

 int FindAndDelete(CScript& script, const CScript& b);

+extern const std::map<std::string, script_verify_flag_name> g_verify_flag_names;
+
+std::vector<std::string> GetScriptFlagNames(script_verify_flags flags);
+
 #endif // BITCOIN_SCRIPT_INTERPRETER_H
--- a/src/script/verify_flags.h
+++ b/src/script/verify_flags.h
@ -0,0 +1,71 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_SCRIPT_VERIFY_FLAGS_H
+#define BITCOIN_SCRIPT_VERIFY_FLAGS_H
+
+#include <compare>
+#include <cstdint>
+
+enum class script_verify_flag_name : uint8_t;
+
+class script_verify_flags
+{
+public:
+    using value_type = uint64_t;
+
+    consteval script_verify_flags() = default;
+
+    // also allow construction with hard-coded 0 (but not other integers)
+    consteval explicit(false) script_verify_flags(value_type f) : m_value{f} { if (f != 0) throw 0; }
+
+    // implicit construction from a hard-coded SCRIPT_VERIFY_* constant is also okay
+    constexpr explicit(false) script_verify_flags(script_verify_flag_name f) : m_value{value_type{1} << static_cast<uint8_t>(f)} { }
+
+    // rule of 5
+    constexpr script_verify_flags(const script_verify_flags&) = default;
+    constexpr script_verify_flags(script_verify_flags&&) = default;
+    constexpr script_verify_flags& operator=(const script_verify_flags&) = default;
+    constexpr script_verify_flags& operator=(script_verify_flags&&) = default;
+    constexpr ~script_verify_flags() = default;
+
+    // integer conversion needs to be very explicit
+    static constexpr script_verify_flags from_int(value_type f) { script_verify_flags r; r.m_value = f; return r; }
+    constexpr value_type as_int() const { return m_value; }
+
+    // bitwise operations
+    constexpr script_verify_flags operator~() const { return from_int(~m_value); }
+    friend constexpr script_verify_flags operator|(script_verify_flags a, script_verify_flags b) { return from_int(a.m_value | b.m_value); }
+    friend constexpr script_verify_flags operator&(script_verify_flags a, script_verify_flags b) { return from_int(a.m_value & b.m_value); }
+
+    // in-place bitwise operations
+    constexpr script_verify_flags& operator|=(script_verify_flags vf) { m_value |= vf.m_value; return *this; }
+    constexpr script_verify_flags& operator&=(script_verify_flags vf) { m_value &= vf.m_value; return *this; }
+
+    // tests
+    constexpr explicit operator bool() const { return m_value != 0; }
+    constexpr bool operator==(script_verify_flags other) const { return m_value == other.m_value; }
+
+    /** Compare two script_verify_flags. <, >, <=, and >= are auto-generated from this. */
+    friend constexpr std::strong_ordering operator<=>(const script_verify_flags& a, const script_verify_flags& b) noexcept
+    {
+        return a.m_value <=> b.m_value;
+    }
+
+private:
+    value_type m_value{0}; // default value is SCRIPT_VERIFY_NONE
+};
+
+inline constexpr script_verify_flags operator~(script_verify_flag_name f)
+{
+    return ~script_verify_flags{f};
+}
+
+inline constexpr script_verify_flags operator|(script_verify_flag_name f1, script_verify_flag_name f2)
+{
+    return script_verify_flags{f1} | f2;
+}
+
+#endif // BITCOIN_SCRIPT_VERIFY_FLAGS_H
--- a/src/signet.cpp
+++ b/src/signet.cpp
@ -26,7 +26,7 @@

 static constexpr uint8_t SIGNET_HEADER[4] = {0xec, 0xc7, 0xda, 0xa2};

-static constexpr unsigned int BLOCK_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_DERSIG | SCRIPT_VERIFY_NULLDUMMY;
+static constexpr script_verify_flags BLOCK_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_DERSIG | SCRIPT_VERIFY_NULLDUMMY;

 static bool FetchAndClearCommitmentSection(const std::span<const uint8_t> header, CScript& witness_commitment, std::vector<uint8_t>& result)
 {
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@ -26,6 +26,7 @@ add_executable(test_bitcoin
  bloom_tests.cpp
  bswap_tests.cpp
  caches_tests.cpp
+  chain_tests.cpp
  chainstate_write_tests.cpp
  checkqueue_tests.cpp
  cluster_linearize_tests.cpp
--- a/src/test/chain_tests.cpp
+++ b/src/test/chain_tests.cpp
@ -0,0 +1,85 @@
+// Copyright (c) The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <boost/test/unit_test.hpp>
+
+#include <chain.h>
+#include <test/util/setup_common.h>
+
+#include <memory>
+
+BOOST_FIXTURE_TEST_SUITE(chain_tests, BasicTestingSetup)
+
+namespace {
+
+const CBlockIndex* NaiveGetAncestor(const CBlockIndex* a, int height)
+{
+    while (a->nHeight > height) {
+        a = a->pprev;
+    }
+    BOOST_REQUIRE_EQUAL(a->nHeight, height);
+    return a;
+}
+
+const CBlockIndex* NaiveLastCommonAncestor(const CBlockIndex* a, const CBlockIndex* b)
+{
+    while (a->nHeight > b->nHeight) {
+        a = a->pprev;
+    }
+    while (b->nHeight > a->nHeight) {
+        b = b->pprev;
+    }
+    while (a != b) {
+        BOOST_REQUIRE_EQUAL(a->nHeight, b->nHeight);
+        a = a->pprev;
+        b = b->pprev;
+    }
+    BOOST_REQUIRE_EQUAL(a, b);
+    return a;
+}
+
+} // namespace
+
+BOOST_AUTO_TEST_CASE(chain_test)
+{
+    FastRandomContext ctx;
+    std::vector<std::unique_ptr<CBlockIndex>> block_index;
+    // Run 10 iterations of the whole test.
+    for (int i = 0; i < 10; ++i) {
+        block_index.clear();
+        // Create genesis block.
+        auto genesis = std::make_unique<CBlockIndex>();
+        genesis->nHeight = 0;
+        block_index.push_back(std::move(genesis));
+        // Create 10000 more blocks.
+        for (int b = 0; b < 10000; ++b) {
+            auto new_index = std::make_unique<CBlockIndex>();
+            // 95% of blocks build on top of the last block; the others fork off randomly.
+            if (ctx.randrange(20) != 0) {
+                new_index->pprev = block_index.back().get();
+            } else {
+                new_index->pprev = block_index[ctx.randrange(block_index.size())].get();
+            }
+            new_index->nHeight = new_index->pprev->nHeight + 1;
+            new_index->BuildSkip();
+            block_index.push_back(std::move(new_index));
+        }
+        // Run 10000 random GetAncestor queries.
+        for (int q = 0; q < 10000; ++q) {
+            const CBlockIndex* block = block_index[ctx.randrange(block_index.size())].get();
+            unsigned height = ctx.randrange<unsigned>(block->nHeight + 1);
+            const CBlockIndex* result = block->GetAncestor(height);
+            BOOST_CHECK(result == NaiveGetAncestor(block, height));
+        }
+        // Run 10000 random LastCommonAncestor queries.
+        for (int q = 0; q < 10000; ++q) {
+            const CBlockIndex* block1 = block_index[ctx.randrange(block_index.size())].get();
+            const CBlockIndex* block2 = block_index[ctx.randrange(block_index.size())].get();
+            const CBlockIndex* result = LastCommonAncestor(block1, block2);
+            BOOST_CHECK(result == NaiveLastCommonAncestor(block1, block2));
+        }
+    }
+}
+
+BOOST_AUTO_TEST_SUITE_END()
--- a/src/test/fuzz/coins_view.cpp
+++ b/src/test/fuzz/coins_view.cpp
@ -288,7 +288,7 @@ void TestCoinsView(FuzzedDataProvider& fuzzed_data_provider, CCoinsView& backend
                    // consensus/tx_verify.cpp:130: unsigned int GetP2SHSigOpCount(const CTransaction &, const CCoinsViewCache &): Assertion `!coin.IsSpent()' failed.
                    return;
                }
-                const auto flags{fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
+                const auto flags = script_verify_flags::from_int(fuzzed_data_provider.ConsumeIntegral<script_verify_flags::value_type>());
                if (!transaction.vin.empty() && (flags & SCRIPT_VERIFY_WITNESS) != 0 && (flags & SCRIPT_VERIFY_P2SH) == 0) {
                    // Avoid:
                    // script/interpreter.cpp:1705: size_t CountWitnessSigOps(const CScript &, const CScript &, const CScriptWitness *, unsigned int): Assertion `(flags & SCRIPT_VERIFY_P2SH) != 0' failed.
--- a/src/test/fuzz/eval_script.cpp
+++ b/src/test/fuzz/eval_script.cpp
@ -12,7 +12,7 @@
 FUZZ_TARGET(eval_script)
 {
    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
-    const unsigned int flags = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
+    const auto flags = script_verify_flags::from_int(fuzzed_data_provider.ConsumeIntegral<script_verify_flags::value_type>());
    const std::vector<uint8_t> script_bytes = [&] {
        if (fuzzed_data_provider.remaining_bytes() != 0) {
            return fuzzed_data_provider.ConsumeRemainingBytes<uint8_t>();
--- a/src/test/fuzz/script.cpp
+++ b/src/test/fuzz/script.cpp
@ -118,8 +118,8 @@ FUZZ_TARGET(script, .init = initialize_script)
            (void)FindAndDelete(script_mut, *other_script);
        }
        const std::vector<std::string> random_string_vector = ConsumeRandomLengthStringVector(fuzzed_data_provider);
-        const uint32_t u32{fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
-        const uint32_t flags{u32 | SCRIPT_VERIFY_P2SH};
+        const auto flags_rand{fuzzed_data_provider.ConsumeIntegral<script_verify_flags::value_type>()};
+        const auto flags = script_verify_flags::from_int(flags_rand) | SCRIPT_VERIFY_P2SH;
        {
            CScriptWitness wit;
            for (const auto& s : random_string_vector) {
--- a/src/test/fuzz/script_assets_test_minimizer.cpp
+++ b/src/test/fuzz/script_assets_test_minimizer.cpp
@ -90,22 +90,22 @@ CScriptWitness ScriptWitnessFromJSON(const UniValue& univalue)
    return scriptwitness;
 }

-const std::map<std::string, unsigned int> FLAG_NAMES = {
-    {std::string("P2SH"), (unsigned int)SCRIPT_VERIFY_P2SH},
-    {std::string("DERSIG"), (unsigned int)SCRIPT_VERIFY_DERSIG},
-    {std::string("NULLDUMMY"), (unsigned int)SCRIPT_VERIFY_NULLDUMMY},
-    {std::string("CHECKLOCKTIMEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY},
-    {std::string("CHECKSEQUENCEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKSEQUENCEVERIFY},
-    {std::string("WITNESS"), (unsigned int)SCRIPT_VERIFY_WITNESS},
-    {std::string("TAPROOT"), (unsigned int)SCRIPT_VERIFY_TAPROOT},
+const std::map<std::string, script_verify_flag_name> FLAG_NAMES = {
+    {std::string("P2SH"), SCRIPT_VERIFY_P2SH},
+    {std::string("DERSIG"), SCRIPT_VERIFY_DERSIG},
+    {std::string("NULLDUMMY"), SCRIPT_VERIFY_NULLDUMMY},
+    {std::string("CHECKLOCKTIMEVERIFY"), SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY},
+    {std::string("CHECKSEQUENCEVERIFY"), SCRIPT_VERIFY_CHECKSEQUENCEVERIFY},
+    {std::string("WITNESS"), SCRIPT_VERIFY_WITNESS},
+    {std::string("TAPROOT"), SCRIPT_VERIFY_TAPROOT},
 };

-std::vector<unsigned int> AllFlags()
+std::vector<script_verify_flags> AllFlags()
 {
-    std::vector<unsigned int> ret;
+    std::vector<script_verify_flags> ret;

    for (unsigned int i = 0; i < 128; ++i) {
-        unsigned int flag = 0;
+        script_verify_flags flag = 0;
        if (i & 1) flag |= SCRIPT_VERIFY_P2SH;
        if (i & 2) flag |= SCRIPT_VERIFY_DERSIG;
        if (i & 4) flag |= SCRIPT_VERIFY_NULLDUMMY;
@ -125,13 +125,13 @@ std::vector<unsigned int> AllFlags()
    return ret;
 }

-const std::vector<unsigned int> ALL_FLAGS = AllFlags();
+const std::vector<script_verify_flags> ALL_FLAGS = AllFlags();

-unsigned int ParseScriptFlags(const std::string& str)
+script_verify_flags ParseScriptFlags(const std::string& str)
 {
    if (str.empty()) return 0;

-    unsigned int flags = 0;
+    script_verify_flags flags = 0;
    std::vector<std::string> words = SplitString(str, ',');

    for (const std::string& word : words) {
@ -153,7 +153,7 @@ void Test(const std::string& str)
    if (prevouts.size() != tx.vin.size()) throw std::runtime_error("Incorrect number of prevouts");
    size_t idx = test["index"].getInt<int64_t>();
    if (idx >= tx.vin.size()) throw std::runtime_error("Invalid index");
-    unsigned int test_flags = ParseScriptFlags(test["flags"].get_str());
+    script_verify_flags test_flags = ParseScriptFlags(test["flags"].get_str());
    bool final = test.exists("final") && test["final"].get_bool();

    if (test.exists("success")) {
--- a/src/test/fuzz/script_flags.cpp
+++ b/src/test/fuzz/script_flags.cpp
@ -15,6 +15,15 @@
 #include <utility>
 #include <vector>

+static DataStream& operator>>(DataStream& ds, script_verify_flags& f)
+{
+    script_verify_flags::value_type n{0};
+    ds >> n;
+    f = script_verify_flags::from_int(n);
+    assert(n == f.as_int());
+    return ds;
+}
+
 FUZZ_TARGET(script_flags)
 {
    if (buffer.size() > 100'000) return;
@ -22,12 +31,14 @@ FUZZ_TARGET(script_flags)
    try {
        const CTransaction tx(deserialize, TX_WITH_WITNESS, ds);

-        unsigned int verify_flags;
+        script_verify_flags verify_flags;
        ds >> verify_flags;

+        assert(verify_flags == script_verify_flags::from_int(verify_flags.as_int()));
+
        if (!IsValidFlagCombination(verify_flags)) return;

-        unsigned int fuzzed_flags;
+        script_verify_flags fuzzed_flags;
        ds >> fuzzed_flags;

        std::vector<CTxOut> spent_outputs;
--- a/src/test/fuzz/signature_checker.cpp
+++ b/src/test/fuzz/signature_checker.cpp
@ -51,7 +51,7 @@ public:
 FUZZ_TARGET(signature_checker)
 {
    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
-    const unsigned int flags = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
+    const auto flags = script_verify_flags::from_int(fuzzed_data_provider.ConsumeIntegral<script_verify_flags::value_type>());
    const SigVersion sig_version = fuzzed_data_provider.PickValueInArray({SigVersion::BASE, SigVersion::WITNESS_V0});
    const auto script_1{ConsumeScript(fuzzed_data_provider)};
    const auto script_2{ConsumeScript(fuzzed_data_provider)};
--- a/src/test/multisig_tests.cpp
+++ b/src/test/multisig_tests.cpp
@ -38,7 +38,7 @@ sign_multisig(const CScript& scriptPubKey, const std::vector<CKey>& keys, const

 BOOST_AUTO_TEST_CASE(multisig_verify)
 {
-    unsigned int flags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC;
+    script_verify_flags flags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC;

    ScriptError err;
    CKey key[4];
--- a/src/test/script_assets_tests.cpp
+++ b/src/test/script_assets_tests.cpp
@ -25,7 +25,7 @@

 #include <univalue.h>

-unsigned int ParseScriptFlags(std::string strFlags);
+script_verify_flags ParseScriptFlags(std::string strFlags);

 BOOST_AUTO_TEST_SUITE(script_assets_tests)

@ -71,12 +71,12 @@ static CScriptWitness ScriptWitnessFromJSON(const UniValue& univalue)
    return scriptwitness;
 }

-static std::vector<unsigned int> AllConsensusFlags()
+static std::vector<script_verify_flags> AllConsensusFlags()
 {
-    std::vector<unsigned int> ret;
+    std::vector<script_verify_flags> ret;

    for (unsigned int i = 0; i < 128; ++i) {
-        unsigned int flag = 0;
+        script_verify_flags flag = 0;
        if (i & 1) flag |= SCRIPT_VERIFY_P2SH;
        if (i & 2) flag |= SCRIPT_VERIFY_DERSIG;
        if (i & 4) flag |= SCRIPT_VERIFY_NULLDUMMY;
@ -97,7 +97,7 @@ static std::vector<unsigned int> AllConsensusFlags()
 }

 /** Precomputed list of all valid combinations of consensus-relevant script validation flags. */
-static const std::vector<unsigned int> ALL_CONSENSUS_FLAGS = AllConsensusFlags();
+static const std::vector<script_verify_flags> ALL_CONSENSUS_FLAGS = AllConsensusFlags();

 static void AssetTest(const UniValue& test, SignatureCache& signature_cache)
 {
@ -107,7 +107,7 @@ static void AssetTest(const UniValue& test, SignatureCache& signature_cache)
    const std::vector<CTxOut> prevouts = TxOutsFromJSON(test["prevouts"]);
    BOOST_CHECK(prevouts.size() == mtx.vin.size());
    size_t idx = test["index"].getInt<int64_t>();
-    uint32_t test_flags{ParseScriptFlags(test["flags"].get_str())};
+    script_verify_flags test_flags{ParseScriptFlags(test["flags"].get_str())};
    bool fin = test.exists("final") && test["final"].get_bool();

    if (test.exists("success")) {
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@ -9,6 +9,7 @@
 #include <core_io.h>
 #include <key.h>
 #include <rpc/util.h>
+#include <script/interpreter.h>
 #include <script/script.h>
 #include <script/script_error.h>
 #include <script/sigcache.h>
@ -22,6 +23,7 @@
 #include <test/util/transaction_utils.h>
 #include <util/fs.h>
 #include <util/strencodings.h>
+#include <util/string.h>

 #include <cstdint>
 #include <fstream>
@ -38,10 +40,9 @@

 using namespace util::hex_literals;

-static const unsigned int gFlags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC;
+static const script_verify_flags gFlags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC;

-unsigned int ParseScriptFlags(std::string strFlags);
-std::string FormatScriptFlags(unsigned int flags);
+script_verify_flags ParseScriptFlags(std::string strFlags);

 struct ScriptErrorDesc
 {
@ -95,6 +96,11 @@ static ScriptErrorDesc script_errors[]={
    {SCRIPT_ERR_SIG_FINDANDDELETE, "SIG_FINDANDDELETE"},
 };

+static std::string FormatScriptFlags(script_verify_flags flags)
+{
+    return util::Join(GetScriptFlagNames(flags), ",");
+}
+
 static std::string FormatScriptError(ScriptError_t err)
 {
    for (const auto& se : script_errors)
@ -114,7 +120,7 @@ static ScriptError_t ParseScriptError(const std::string& name)
 }

 struct ScriptTest : BasicTestingSetup {
-void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, const CScriptWitness& scriptWitness, uint32_t flags, const std::string& message, int scriptError, CAmount nValue = 0)
+void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, const CScriptWitness& scriptWitness, script_verify_flags flags, const std::string& message, int scriptError, CAmount nValue = 0)
 {
    bool expect = (scriptError == SCRIPT_ERR_OK);
    if (flags & SCRIPT_VERIFY_CLEANSTACK) {
@ -128,13 +134,13 @@ void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, const CScript
    BOOST_CHECK_MESSAGE(err == scriptError, FormatScriptError(err) + " where " + FormatScriptError((ScriptError_t)scriptError) + " expected: " + message);

    // Verify that removing flags from a passing test or adding flags to a failing test does not change the result.
-    for (int i = 0; i < 16; ++i) {
-        uint32_t extra_flags(m_rng.randbits(16));
-        uint32_t combined_flags{expect ? (flags & ~extra_flags) : (flags | extra_flags)};
+    for (int i = 0; i < 256; ++i) {
+        script_verify_flags extra_flags = script_verify_flags::from_int(m_rng.randbits(MAX_SCRIPT_VERIFY_FLAGS_BITS));
+        script_verify_flags combined_flags{expect ? (flags & ~extra_flags) : (flags | extra_flags)};
        // Weed out some invalid flag combinations.
        if (combined_flags & SCRIPT_VERIFY_CLEANSTACK && ~combined_flags & (SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS)) continue;
        if (combined_flags & SCRIPT_VERIFY_WITNESS && ~combined_flags & SCRIPT_VERIFY_P2SH) continue;
-        BOOST_CHECK_MESSAGE(VerifyScript(scriptSig, scriptPubKey, &scriptWitness, combined_flags, MutableTransactionSignatureChecker(&tx, 0, txCredit.vout[0].nValue, MissingDataBehavior::ASSERT_FAIL), &err) == expect, message + strprintf(" (with flags %x)", combined_flags));
+        BOOST_CHECK_MESSAGE(VerifyScript(scriptSig, scriptPubKey, &scriptWitness, combined_flags, MutableTransactionSignatureChecker(&tx, 0, txCredit.vout[0].nValue, MissingDataBehavior::ASSERT_FAIL), &err) == expect, message + strprintf(" (with flags %x)", combined_flags.as_int()));
    }
 }
 }; // struct ScriptTest
@ -226,7 +232,7 @@ private:
    bool havePush{false};
    std::vector<unsigned char> push;
    std::string comment;
-    uint32_t flags;
+    script_verify_flags flags;
    int scriptError{SCRIPT_ERR_OK};
    CAmount nValue;

@ -246,7 +252,7 @@ private:
    }

 public:
-    TestBuilder(const CScript& script_, const std::string& comment_, uint32_t flags_, bool P2SH = false, WitnessMode wm = WitnessMode::NONE, int witnessversion = 0, CAmount nValue_ = 0) : script(script_), comment(comment_), flags(flags_), nValue(nValue_)
+    TestBuilder(const CScript& script_, const std::string& comment_, script_verify_flags flags_, bool P2SH = false, WitnessMode wm = WitnessMode::NONE, int witnessversion = 0, CAmount nValue_ = 0) : script(script_), comment(comment_), flags(flags_), nValue(nValue_)
    {
        CScript scriptPubKey = script;
        if (wm == WitnessMode::PKH) {
@ -963,7 +969,7 @@ BOOST_AUTO_TEST_CASE(script_json_test)
        } else {
            scriptPubKey = ParseScript(scriptPubKeyString);
        }
-        unsigned int scriptflags = ParseScriptFlags(test[pos++].get_str());
+        script_verify_flags scriptflags = ParseScriptFlags(test[pos++].get_str());
        int scriptError = ParseScriptError(test[pos++].get_str());

        DoTest(scriptPubKey, scriptSig, witness, scriptflags, strTest, scriptError, nValue);
@ -1706,4 +1712,15 @@ BOOST_AUTO_TEST_CASE(compute_tapleaf)
    BOOST_CHECK_EQUAL(ComputeTapleafHash(0xc2, std::span(script)), tlc2);
 }

+BOOST_AUTO_TEST_CASE(formatscriptflags)
+{
+    // quick check that FormatScriptFlags reports any unknown/unexpected bits
+    BOOST_CHECK_EQUAL(FormatScriptFlags(SCRIPT_VERIFY_P2SH), "P2SH");
+    BOOST_CHECK_EQUAL(FormatScriptFlags(SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_TAPROOT), "P2SH,TAPROOT");
+    BOOST_CHECK_EQUAL(FormatScriptFlags(SCRIPT_VERIFY_P2SH | script_verify_flags::from_int(1u<<31)), "P2SH,0x80000000");
+    BOOST_CHECK_EQUAL(FormatScriptFlags(SCRIPT_VERIFY_TAPROOT | script_verify_flags::from_int(1u<<27)), "TAPROOT,0x08000000");
+    BOOST_CHECK_EQUAL(FormatScriptFlags(SCRIPT_VERIFY_TAPROOT | script_verify_flags::from_int((1u<<28) | (1ull<<58))), "TAPROOT,0x400000010000000");
+    BOOST_CHECK_EQUAL(FormatScriptFlags(script_verify_flags::from_int(1u<<26)), "0x04000000");
+}
+
 BOOST_AUTO_TEST_SUITE_END()
--- a/src/test/sigopcount_tests.cpp
+++ b/src/test/sigopcount_tests.cpp
@ -69,7 +69,7 @@ BOOST_AUTO_TEST_CASE(GetSigOpCount)
 * Verifies script execution of the zeroth scriptPubKey of tx output and
 * zeroth scriptSig and witness of tx input.
 */
-static ScriptError VerifyWithFlag(const CTransaction& output, const CMutableTransaction& input, uint32_t flags)
+static ScriptError VerifyWithFlag(const CTransaction& output, const CMutableTransaction& input, script_verify_flags flags)
 {
    ScriptError error;
    CTransaction inputi(input);
@ -122,7 +122,7 @@ BOOST_AUTO_TEST_CASE(GetTxSigOpCost)
    CKey key = GenerateRandomKey();
    CPubKey pubkey = key.GetPubKey();
    // Default flags
-    const uint32_t flags{SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH};
+    const script_verify_flags flags{SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH};

    // Multisig script (legacy counting)
    {
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@ -17,6 +17,7 @@
 #include <policy/policy.h>
 #include <policy/settings.h>
 #include <primitives/transaction_identifier.h>
+#include <script/interpreter.h>
 #include <script/script.h>
 #include <script/script_error.h>
 #include <script/sigcache.h>
@ -49,41 +50,21 @@ typedef std::vector<unsigned char> valtype;
 static CFeeRate g_dust{DUST_RELAY_TX_FEE};
 static bool g_bare_multi{DEFAULT_PERMIT_BAREMULTISIG};

-static std::map<std::string, unsigned int> mapFlagNames = {
-    {std::string("P2SH"), (unsigned int)SCRIPT_VERIFY_P2SH},
-    {std::string("STRICTENC"), (unsigned int)SCRIPT_VERIFY_STRICTENC},
-    {std::string("DERSIG"), (unsigned int)SCRIPT_VERIFY_DERSIG},
-    {std::string("LOW_S"), (unsigned int)SCRIPT_VERIFY_LOW_S},
-    {std::string("SIGPUSHONLY"), (unsigned int)SCRIPT_VERIFY_SIGPUSHONLY},
-    {std::string("MINIMALDATA"), (unsigned int)SCRIPT_VERIFY_MINIMALDATA},
-    {std::string("NULLDUMMY"), (unsigned int)SCRIPT_VERIFY_NULLDUMMY},
-    {std::string("DISCOURAGE_UPGRADABLE_NOPS"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS},
-    {std::string("CLEANSTACK"), (unsigned int)SCRIPT_VERIFY_CLEANSTACK},
-    {std::string("MINIMALIF"), (unsigned int)SCRIPT_VERIFY_MINIMALIF},
-    {std::string("NULLFAIL"), (unsigned int)SCRIPT_VERIFY_NULLFAIL},
-    {std::string("CHECKLOCKTIMEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY},
-    {std::string("CHECKSEQUENCEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKSEQUENCEVERIFY},
-    {std::string("WITNESS"), (unsigned int)SCRIPT_VERIFY_WITNESS},
-    {std::string("DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM},
-    {std::string("WITNESS_PUBKEYTYPE"), (unsigned int)SCRIPT_VERIFY_WITNESS_PUBKEYTYPE},
-    {std::string("CONST_SCRIPTCODE"), (unsigned int)SCRIPT_VERIFY_CONST_SCRIPTCODE},
-    {std::string("TAPROOT"), (unsigned int)SCRIPT_VERIFY_TAPROOT},
-    {std::string("DISCOURAGE_UPGRADABLE_PUBKEYTYPE"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_PUBKEYTYPE},
-    {std::string("DISCOURAGE_OP_SUCCESS"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_OP_SUCCESS},
-    {std::string("DISCOURAGE_UPGRADABLE_TAPROOT_VERSION"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION},
-};
+static const std::map<std::string, script_verify_flag_name>& mapFlagNames = g_verify_flag_names;

-unsigned int ParseScriptFlags(std::string strFlags)
+script_verify_flags ParseScriptFlags(std::string strFlags)
 {
-    unsigned int flags = SCRIPT_VERIFY_NONE;
+    script_verify_flags flags = SCRIPT_VERIFY_NONE;
    if (strFlags.empty() || strFlags == "NONE") return flags;

    std::vector<std::string> words = SplitString(strFlags, ',');
    for (const std::string& word : words)
    {
-        if (!mapFlagNames.count(word))
+        if (!mapFlagNames.count(word)) {
            BOOST_ERROR("Bad test: unknown verification flag '" << word << "'");
-        flags |= mapFlagNames[word];
+            continue;
+        }
+        flags |= mapFlagNames.at(word);
    }
    return flags;
 }
@ -91,34 +72,18 @@ unsigned int ParseScriptFlags(std::string strFlags)
 // Check that all flags in STANDARD_SCRIPT_VERIFY_FLAGS are present in mapFlagNames.
 bool CheckMapFlagNames()
 {
-    unsigned int standard_flags_missing{STANDARD_SCRIPT_VERIFY_FLAGS};
+    script_verify_flags standard_flags_missing{STANDARD_SCRIPT_VERIFY_FLAGS};
    for (const auto& pair : mapFlagNames) {
        standard_flags_missing &= ~(pair.second);
    }
    return standard_flags_missing == 0;
 }

-std::string FormatScriptFlags(unsigned int flags)
-{
-    if (flags == SCRIPT_VERIFY_NONE) {
-        return "";
-    }
-    std::string ret;
-    std::map<std::string, unsigned int>::const_iterator it = mapFlagNames.begin();
-    while (it != mapFlagNames.end()) {
-        if (flags & it->second) {
-            ret += it->first + ",";
-        }
-        it++;
-    }
-    return ret.substr(0, ret.size() - 1);
-}
-
 /*
 * Check that the input scripts of a transaction are valid/invalid as expected.
 */
 bool CheckTxScripts(const CTransaction& tx, const std::map<COutPoint, CScript>& map_prevout_scriptPubKeys,
-    const std::map<COutPoint, int64_t>& map_prevout_values, unsigned int flags,
+    const std::map<COutPoint, int64_t>& map_prevout_values, script_verify_flags flags,
    const PrecomputedTransactionData& txdata, const std::string& strTest, bool expect_valid)
 {
    bool tx_valid = true;
@ -152,18 +117,18 @@ bool CheckTxScripts(const CTransaction& tx, const std::map<COutPoint, CScript>&
 * CLEANSTACK must be used WITNESS and P2SH
 */

-unsigned int TrimFlags(unsigned int flags)
+script_verify_flags TrimFlags(script_verify_flags flags)
 {
    // WITNESS requires P2SH
-    if (!(flags & SCRIPT_VERIFY_P2SH)) flags &= ~(unsigned int)SCRIPT_VERIFY_WITNESS;
+    if (!(flags & SCRIPT_VERIFY_P2SH)) flags &= ~SCRIPT_VERIFY_WITNESS;

    // CLEANSTACK requires WITNESS (and transitively CLEANSTACK requires P2SH)
-    if (!(flags & SCRIPT_VERIFY_WITNESS)) flags &= ~(unsigned int)SCRIPT_VERIFY_CLEANSTACK;
+    if (!(flags & SCRIPT_VERIFY_WITNESS)) flags &= ~SCRIPT_VERIFY_CLEANSTACK;
    Assert(IsValidFlagCombination(flags));
    return flags;
 }

-unsigned int FillFlags(unsigned int flags)
+script_verify_flags FillFlags(script_verify_flags flags)
 {
    // CLEANSTACK implies WITNESS
    if (flags & SCRIPT_VERIFY_CLEANSTACK) flags |= SCRIPT_VERIFY_WITNESS;
@ -178,11 +143,11 @@ unsigned int FillFlags(unsigned int flags)
 // that are valid and without duplicates. For example: if flags=1111 and the 4 possible flags are
 // 0001, 0010, 0100, and 1000, this should return the set {0111, 1011, 1101, 1110}.
 // Assumes that mapFlagNames contains all script verify flags.
-std::set<unsigned int> ExcludeIndividualFlags(unsigned int flags)
+std::set<script_verify_flags> ExcludeIndividualFlags(script_verify_flags flags)
 {
-    std::set<unsigned int> flags_combos;
+    std::set<script_verify_flags> flags_combos;
    for (const auto& pair : mapFlagNames) {
-        const unsigned int flags_excluding_one = TrimFlags(flags & ~(pair.second));
+        script_verify_flags flags_excluding_one = TrimFlags(flags & ~(pair.second));
        if (flags != flags_excluding_one) {
            flags_combos.insert(flags_excluding_one);
        }
@ -247,7 +212,7 @@ BOOST_AUTO_TEST_CASE(tx_valid)
            BOOST_CHECK(state.IsValid());

            PrecomputedTransactionData txdata(tx);
-            unsigned int verify_flags = ParseScriptFlags(test[2].get_str());
+            script_verify_flags verify_flags = ParseScriptFlags(test[2].get_str());

            // Check that the test gives a valid combination of flags (otherwise VerifyScript will throw). Don't edit the flags.
            if (~verify_flags != FillFlags(~verify_flags)) {
@ -260,14 +225,14 @@ BOOST_AUTO_TEST_CASE(tx_valid)
            // Backwards compatibility of script verification flags: Removing any flag(s) should not invalidate a valid transaction
            for (const auto& [name, flag] : mapFlagNames) {
                // Removing individual flags
-                unsigned int flags = TrimFlags(~(verify_flags | flag));
+                script_verify_flags flags = TrimFlags(~(verify_flags | flag));
                if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /*expect_valid=*/true)) {
                    BOOST_ERROR("Tx unexpectedly failed with flag " << name << " unset: " << strTest);
                }
                // Removing random combinations of flags
-                flags = TrimFlags(~(verify_flags | (unsigned int)m_rng.randbits(mapFlagNames.size())));
+                flags = TrimFlags(~(verify_flags | script_verify_flags::from_int(m_rng.randbits(MAX_SCRIPT_VERIFY_FLAGS_BITS))));
                if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /*expect_valid=*/true)) {
-                    BOOST_ERROR("Tx unexpectedly failed with random flags " << ToString(flags) << ": " << strTest);
+                    BOOST_ERROR("Tx unexpectedly failed with random flags " << ToString(flags.as_int()) << ": " << strTest);
                }
            }

@ -337,7 +302,7 @@ BOOST_AUTO_TEST_CASE(tx_invalid)
            }

            PrecomputedTransactionData txdata(tx);
-            unsigned int verify_flags = ParseScriptFlags(test[2].get_str());
+            script_verify_flags verify_flags = ParseScriptFlags(test[2].get_str());

            // Check that the test gives a valid combination of flags (otherwise VerifyScript will throw). Don't edit the flags.
            if (verify_flags != FillFlags(verify_flags)) {
@ -350,13 +315,13 @@ BOOST_AUTO_TEST_CASE(tx_invalid)

            // Backwards compatibility of script verification flags: Adding any flag(s) should not validate an invalid transaction
            for (const auto& [name, flag] : mapFlagNames) {
-                unsigned int flags = FillFlags(verify_flags | flag);
+                script_verify_flags flags = FillFlags(verify_flags | flag);
                // Adding individual flags
                if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /*expect_valid=*/false)) {
                    BOOST_ERROR("Tx unexpectedly passed with flag " << name << " set: " << strTest);
                }
                // Adding random combinations of flags
-                flags = FillFlags(verify_flags | (unsigned int)m_rng.randbits(mapFlagNames.size()));
+                flags = FillFlags(verify_flags | script_verify_flags::from_int(m_rng.randbits(MAX_SCRIPT_VERIFY_FLAGS_BITS)));
                if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /*expect_valid=*/false)) {
                    BOOST_ERROR("Tx unexpectedly passed with random flags " << name << ": " << strTest);
                }
@ -488,7 +453,7 @@ static void CreateCreditAndSpend(const FillableSigningProvider& keystore, const
    assert(input.vin[0].scriptWitness.stack == inputm.vin[0].scriptWitness.stack);
 }

-static void CheckWithFlag(const CTransactionRef& output, const CMutableTransaction& input, uint32_t flags, bool success)
+static void CheckWithFlag(const CTransactionRef& output, const CMutableTransaction& input, script_verify_flags flags, bool success)
 {
    ScriptError error;
    CTransaction inputi(input);
--- a/src/test/txvalidationcache_tests.cpp
+++ b/src/test/txvalidationcache_tests.cpp
@ -21,7 +21,7 @@ struct Dersig100Setup : public TestChain100Setup {
 };

 bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
-                       const CCoinsViewCache& inputs, unsigned int flags, bool cacheSigStore,
+                       const CCoinsViewCache& inputs, script_verify_flags flags, bool cacheSigStore,
                       bool cacheFullScriptStore, PrecomputedTransactionData& txdata,
                       ValidationCache& validation_cache,
                       std::vector<CScriptCheck>* pvChecks) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
@ -120,7 +120,7 @@ BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, Dersig100Setup)
 // should fail.
 // Capture this interaction with the upgraded_nop argument: set it when evaluating
 // any script flag that is implemented as an upgraded NOP code.
-static void ValidateCheckInputsForAllFlags(const CTransaction &tx, uint32_t failing_flags, bool add_to_cache, CCoinsViewCache& active_coins_tip, ValidationCache& validation_cache) EXCLUSIVE_LOCKS_REQUIRED(::cs_main)
+static void ValidateCheckInputsForAllFlags(const CTransaction &tx, script_verify_flags failing_flags, bool add_to_cache, CCoinsViewCache& active_coins_tip, ValidationCache& validation_cache) EXCLUSIVE_LOCKS_REQUIRED(::cs_main)
 {
    PrecomputedTransactionData txdata;

@ -130,7 +130,7 @@ static void ValidateCheckInputsForAllFlags(const CTransaction &tx, uint32_t fail
        TxValidationState state;

        // Randomly selects flag combinations
-        uint32_t test_flags = (uint32_t) insecure_rand.randrange((SCRIPT_VERIFY_END_MARKER - 1) << 1);
+        script_verify_flags test_flags = script_verify_flags::from_int(insecure_rand.randrange(MAX_SCRIPT_VERIFY_FLAGS));

        // Filter out incompatible flag choices
        if ((test_flags & SCRIPT_VERIFY_CLEANSTACK)) {
--- a/src/test/util/script.cpp
+++ b/src/test/util/script.cpp
@ -5,7 +5,7 @@
 #include <script/interpreter.h>
 #include <test/util/script.h>

-bool IsValidFlagCombination(unsigned flags)
+bool IsValidFlagCombination(script_verify_flags flags)
 {
    if (flags & SCRIPT_VERIFY_CLEANSTACK && ~flags & (SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS)) return false;
    if (flags & SCRIPT_VERIFY_WITNESS && ~flags & SCRIPT_VERIFY_P2SH) return false;
--- a/src/test/util/script.h
+++ b/src/test/util/script.h
@ -7,6 +7,7 @@

 #include <crypto/sha256.h>
 #include <script/script.h>
+#include <script/verify_flags.h>

 static const std::vector<uint8_t> WITNESS_STACK_ELEM_OP_TRUE{uint8_t{OP_TRUE}};
 static const CScript P2WSH_OP_TRUE{
@ -31,6 +32,6 @@ static const std::vector<std::vector<uint8_t>> P2WSH_EMPTY_TRUE_STACK{{static_ca
 static const std::vector<std::vector<uint8_t>> P2WSH_EMPTY_TWO_STACK{{static_cast<uint8_t>(OP_2)}, {}};

 /** Flags that are not forbidden by an assert in script validation */
-bool IsValidFlagCombination(unsigned flags);
+bool IsValidFlagCombination(script_verify_flags flags);

 #endif // BITCOIN_TEST_UTIL_SCRIPT_H
--- a/src/validation.cpp
+++ b/src/validation.cpp
@ -139,7 +139,7 @@ const CBlockIndex* Chainstate::FindForkInGlobalIndex(const CBlockLocator& locato
 }

 bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
-                       const CCoinsViewCache& inputs, unsigned int flags, bool cacheSigStore,
+                       const CCoinsViewCache& inputs, script_verify_flags flags, bool cacheSigStore,
                       bool cacheFullScriptStore, PrecomputedTransactionData& txdata,
                       ValidationCache& validation_cache,
                       std::vector<CScriptCheck>* pvChecks = nullptr)
@ -262,9 +262,6 @@ bool CheckSequenceLocksAtTip(CBlockIndex* tip,
    return EvaluateSequenceLocks(index, {lock_points.height, lock_points.time});
 }

-// Returns the script flags which should be checked for a given block
-static unsigned int GetBlockScriptFlags(const CBlockIndex& block_index, const ChainstateManager& chainman);
-
 static void LimitMempoolSize(CTxMemPool& pool, CCoinsViewCache& coins_cache)
    EXCLUSIVE_LOCKS_REQUIRED(::cs_main, pool.cs)
 {
@ -398,7 +395,7 @@ void Chainstate::MaybeUpdateMempoolForReorg(
 * */
 static bool CheckInputsFromMempoolAndCache(const CTransaction& tx, TxValidationState& state,
                const CCoinsViewCache& view, const CTxMemPool& pool,
-                unsigned int flags, PrecomputedTransactionData& txdata, CCoinsViewCache& coins_tip,
+                script_verify_flags flags, PrecomputedTransactionData& txdata, CCoinsViewCache& coins_tip,
                ValidationCache& validation_cache)
                EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs)
 {
@ -1251,7 +1248,7 @@ bool MemPoolAccept::PolicyScriptChecks(const ATMPArgs& args, Workspace& ws)
    const CTransaction& tx = *ws.m_ptx;
    TxValidationState& state = ws.m_state;

-    constexpr unsigned int scriptVerifyFlags = STANDARD_SCRIPT_VERIFY_FLAGS;
+    constexpr script_verify_flags scriptVerifyFlags = STANDARD_SCRIPT_VERIFY_FLAGS;

    // Check input scripts and signatures.
    // This is done last to help prevent CPU exhaustion denial-of-service attacks.
@ -1290,7 +1287,7 @@ bool MemPoolAccept::ConsensusScriptChecks(const ATMPArgs& args, Workspace& ws)
    // There is a similar check in CreateNewBlock() to prevent creating
    // invalid blocks (using TestBlockValidity), however allowing such
    // transactions into the mempool can be exploited as a DoS attack.
-    unsigned int currentBlockScriptVerifyFlags{GetBlockScriptFlags(*m_active_chainstate.m_chain.Tip(), m_active_chainstate.m_chainman)};
+    script_verify_flags currentBlockScriptVerifyFlags{GetBlockScriptFlags(*m_active_chainstate.m_chain.Tip(), m_active_chainstate.m_chainman)};
    if (!CheckInputsFromMempoolAndCache(tx, state, m_view, m_pool, currentBlockScriptVerifyFlags,
                                        ws.m_precomputed_txdata, m_active_chainstate.CoinsTip(), GetValidationCache())) {
        LogPrintf("BUG! PLEASE REPORT THIS! CheckInputScripts failed against latest-block but not STANDARD flags %s, %s\n", hash.ToString(), state.ToString());
@ -2098,7 +2095,7 @@ std::optional<std::pair<ScriptError, std::string>> CScriptCheck::operator()() {
    const CScript &scriptSig = ptxTo->vin[nIn].scriptSig;
    const CScriptWitness *witness = &ptxTo->vin[nIn].scriptWitness;
    ScriptError error{SCRIPT_ERR_UNKNOWN_ERROR};
-    if (VerifyScript(scriptSig, m_tx_out.scriptPubKey, witness, nFlags, CachingTransactionSignatureChecker(ptxTo, nIn, m_tx_out.nValue, cacheStore, *m_signature_cache, *txdata), &error)) {
+    if (VerifyScript(scriptSig, m_tx_out.scriptPubKey, witness, m_flags, CachingTransactionSignatureChecker(ptxTo, nIn, m_tx_out.nValue, cacheStore, *m_signature_cache, *txdata), &error)) {
        return std::nullopt;
    } else {
        auto debug_str = strprintf("input %i of %s (wtxid %s), spending %s:%i", nIn, ptxTo->GetHash().ToString(), ptxTo->GetWitnessHash().ToString(), ptxTo->vin[nIn].prevout.hash.ToString(), ptxTo->vin[nIn].prevout.n);
@ -2142,7 +2139,7 @@ ValidationCache::ValidationCache(const size_t script_execution_cache_bytes, cons
 * Non-static (and redeclared) in src/test/txvalidationcache_tests.cpp
 */
 bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
-                       const CCoinsViewCache& inputs, unsigned int flags, bool cacheSigStore,
+                       const CCoinsViewCache& inputs, script_verify_flags flags, bool cacheSigStore,
                       bool cacheFullScriptStore, PrecomputedTransactionData& txdata,
                       ValidationCache& validation_cache,
                       std::vector<CScriptCheck>* pvChecks)
@ -2330,7 +2327,7 @@ DisconnectResult Chainstate::DisconnectBlock(const CBlock& block, const CBlockIn
    return fClean ? DISCONNECT_OK : DISCONNECT_UNCLEAN;
 }

-static unsigned int GetBlockScriptFlags(const CBlockIndex& block_index, const ChainstateManager& chainman)
+script_verify_flags GetBlockScriptFlags(const CBlockIndex& block_index, const ChainstateManager& chainman)
 {
    const Consensus::Params& consensusparams = chainman.GetConsensus();

@ -2342,7 +2339,7 @@ static unsigned int GetBlockScriptFlags(const CBlockIndex& block_index, const Ch
    // mainnet.
    // For simplicity, always leave P2SH+WITNESS+TAPROOT on except for the two
    // violating blocks.
-    uint32_t flags{SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_TAPROOT};
+    script_verify_flags flags{SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_TAPROOT};
    const auto it{consensusparams.script_flag_exceptions.find(*Assert(block_index.phashBlock))};
    if (it != consensusparams.script_flag_exceptions.end()) {
        flags = it->second;
@ -2556,7 +2553,7 @@ bool Chainstate::ConnectBlock(const CBlock& block, BlockValidationState& state,
    }

    // Get the script flags for this block
-    unsigned int flags{GetBlockScriptFlags(*pindex, m_chainman)};
+    script_verify_flags flags{GetBlockScriptFlags(*pindex, m_chainman)};

    const auto time_2{SteadyClock::now()};
    m_chainman.time_forks += time_2 - time_1;
--- a/src/validation.h
+++ b/src/validation.h
@ -23,6 +23,7 @@
 #include <policy/policy.h>
 #include <script/script_error.h>
 #include <script/sigcache.h>
+#include <script/verify_flags.h>
 #include <sync.h>
 #include <txdb.h>
 #include <txmempool.h>
@ -336,14 +337,14 @@ private:
    CTxOut m_tx_out;
    const CTransaction *ptxTo;
    unsigned int nIn;
-    unsigned int nFlags;
+    script_verify_flags m_flags;
    bool cacheStore;
    PrecomputedTransactionData *txdata;
    SignatureCache* m_signature_cache;

 public:
-    CScriptCheck(const CTxOut& outIn, const CTransaction& txToIn, SignatureCache& signature_cache, unsigned int nInIn, unsigned int nFlagsIn, bool cacheIn, PrecomputedTransactionData* txdataIn) :
-        m_tx_out(outIn), ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), txdata(txdataIn), m_signature_cache(&signature_cache) { }
+    CScriptCheck(const CTxOut& outIn, const CTransaction& txToIn, SignatureCache& signature_cache, unsigned int nInIn, script_verify_flags flags, bool cacheIn, PrecomputedTransactionData* txdataIn) :
+        m_tx_out(outIn), ptxTo(&txToIn), nIn(nInIn), m_flags(flags), cacheStore(cacheIn), txdata(txdataIn), m_signature_cache(&signature_cache) { }

    CScriptCheck(const CScriptCheck&) = delete;
    CScriptCheck& operator=(const CScriptCheck&) = delete;
@ -1365,4 +1366,7 @@ bool IsBIP30Repeat(const CBlockIndex& block_index);
 /** Identifies blocks which coinbase output was subsequently overwritten in the UTXO set (see BIP30) */
 bool IsBIP30Unspendable(const uint256& block_hash, int block_height);

+// Returns the script flags which should be checked for a given block
+script_verify_flags GetBlockScriptFlags(const CBlockIndex& block_index, const ChainstateManager& chainman);
+
 #endif // BITCOIN_VALIDATION_H
--- a/test/functional/feature_init.py
+++ b/test/functional/feature_init.py
@ -3,12 +3,14 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Tests related to node initialization."""
+from concurrent.futures import ThreadPoolExecutor
 from pathlib import Path
 import os
 import platform
 import shutil
 import signal
 import subprocess
+import time

 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.test_node import (
@ -240,9 +242,58 @@ class InitTest(BitcoinTestFramework):
        self.stop_node(0)
        assert not custom_pidfile_absolute.exists()

+    def break_wait_test(self):
+        """Test what happens when a break signal is sent during a
+        waitforblockheight RPC call with a long timeout. Ctrl-Break is sent on
+        Windows and SIGTERM is sent on other platforms, to trigger the same node
+        shutdown sequence that would happen if Ctrl-C were pressed in a
+        terminal. (This can be different than the node shutdown sequence that
+        happens when the stop RPC is sent.)
+
+        The waitforblockheight call should be interrupted and return right away,
+        and not time out."""
+
+        self.log.info("Testing waitforblockheight RPC call followed by break signal")
+        node = self.nodes[0]
+
+        if platform.system() == 'Windows':
+            # CREATE_NEW_PROCESS_GROUP prevents python test from exiting
+            # with STATUS_CONTROL_C_EXIT (-1073741510) when break is sent.
+            self.start_node(node.index, creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
+        else:
+            self.start_node(node.index)
+
+        current_height = node.getblock(node.getbestblockhash())['height']
+
+        with ThreadPoolExecutor(max_workers=1) as ex:
+            # Call waitforblockheight with wait timeout longer than RPC timeout,
+            # so it is possible to distinguish whether it times out or returns
+            # early. If it times out it will throw an exception, and if it
+            # returns early it will return the current block height.
+            self.log.debug(f"Calling waitforblockheight with {self.rpc_timeout} sec RPC timeout")
+            fut = ex.submit(node.waitforblockheight, height=current_height+1, timeout=self.rpc_timeout*1000*2)
+            time.sleep(1)
+
+            self.log.debug(f"Sending break signal to pid {node.process.pid}")
+            if platform.system() == 'Windows':
+                # Note: CTRL_C_EVENT should not be sent here because unlike
+                # CTRL_BREAK_EVENT it can not be targeted at a specific process
+                # group and may behave unpredictably.
+                node.process.send_signal(signal.CTRL_BREAK_EVENT)
+            else:
+                # Note: signal.SIGINT would work here as well
+                node.process.send_signal(signal.SIGTERM)
+            node.process.wait()
+
+            result = fut.result()
+            self.log.debug(f"waitforblockheight returned {result!r}")
+            assert_equal(result["height"], current_height)
+            node.wait_until_stopped()
+
    def run_test(self):
        self.init_pid_test()
        self.init_stress_test()
+        self.break_wait_test()


 if __name__ == '__main__':
--- a/test/functional/rpc_blockchain.py
+++ b/test/functional/rpc_blockchain.py
@ -213,6 +213,7 @@ class BlockchainTest(BitcoinTestFramework):
        assert_equal(gdi_result, {
          "hash": blockhash,
          "height": height,
+          "script_flags": ["CHECKLOCKTIMEVERIFY","CHECKSEQUENCEVERIFY","DERSIG","NULLDUMMY","P2SH","TAPROOT","WITNESS"],
          "deployments": {
            'bip34': {'type': 'buried', 'active': True, 'height': 2},
            'bip66': {'type': 'buried', 'active': True, 'height': 3},
Author	SHA1	Message	Date
Ryan Ofsky	7f6a7e038a	Merge `c25a5e670b` into `b510893d00`	2025-10-08 02:01:27 +02:00
Ava Chow	b510893d00	Merge bitcoin/bitcoin#33494 : depends: Update URL for `qrencode` package source tarball `93a70a42d3` depends: Update URL for `qrencode` package source tarball (Hennadii Stepanov) `6de8051263` depends: Use hash instead of file name for package download stamp (Hennadii Stepanov) `46135d90ea` depends: Drop redundant check for downloaded file (Hennadii Stepanov) `771978952a` depends: Fix `$(package)_fetched` target (Hennadii Stepanov) Pull request description: The https://fukuchi.org/ homepage no longer links to the source tarball, and previously available files appear to have been removed. The homepage now instructs users to download source tarballs from the GitHub [releases](https://github.com/fukuchi/libqrencode/releases) page instead. The diff between the source trees is immaterial: ```diff --- old +++ new @@ -1,19 +1,16 @@ 27e7deccd2925c94e4190ee64794a051199f215f145f76fd664cdebedbbf8a35 acinclude.m4 -e1e35b1309482f699a9700a2065a0bce09c2108dd1f78ba7bfbe0f7f0bdcd2e6 aclocal.m4 a9308eec78790720dbcd5452ab8f241b5f1c6939ccf3389917b8e78cb2b58c9e autogen.sh aa36725d577048f0370dc7415a1acb578fbdfb531c1b384a836d9360a81f6f5c bitstream.c 3feaacd7d096834fc5956215598564ec287ad443185c4433c3f8007cc53ceaa6 bitstream.h 21bd5a34c90d3d6ee540ceb48c3d5aea5f21bd6b829ef3112db832af0bd423d8 ChangeLog f8a7a94c9622fab721df47e8121533ebfcb79885aca01ecec2fff00dfb84caef cmake/FindIconv.cmake 6345e7eecb92473f361a8eb98dd373aa09cae79a43408cf4b42b00b411c9c197 CMakeLists.txt -031d560570eab2eda57c2f9ee9952445002f8bf4a23965fcaf43bbc2c61590e2 config.h.in -d2f42cc5771b69f2d2ecd4b31509864ae2b18b25c823986390bb372ee07030fa configure 02867a8ea08206c84d5f4c05f41a15c639291091e3dfac27f3a9029d8f5d3028 configure.ac a9bdde5616ecdd1e980b44f360600ee8783b1f99b8cc83a2beb163a0a390e861 COPYING 76c41754bccbf69a60fb7833776637c60b86f59104705c0a5cea9ee3a2968f3d Doxyfile 36d84f714cf28397b02d6c44860106a7cb858fc6d25239a2698a72fa5136e5c3 libqrencode.pc.in f0ce93a7e1b1f0fab87dd071ec3c8dd80a567d778dfc5930d9f375d676ecb9a0 Makefile.am -507c2385fb49c5724e8e3dfca97feb24cbdd4e651f3f0bfa62524e60088091a0 Makefile.in +dcb782b1b382328c0bce9194944bdcc65a6035d8e9f89e39436ed2e55ae8b969 makeREADME.sh 6046d347c6c564fc13a24dc0a15a09a83023e00a4e0d0f23029a81f86ac4d024 mask.c 9f853cee7d72191a8dbf018b7a86c0f0b6ca661e27a51fab677af911f2ff9e7e mask.h a4e17b68d8db573e152132ebcbdc837b55415c12027f81232662db645faf79f0 mmask.c @@ -30,7 +27,7 @@ 6e9ff66002b4a839c6e78bcd6a55342d9eb8b289273fa838441b27ee9969e293 qrinput.h 68831e02ee1ba602b1937328abec000e616c4472d9dc40067dd45ab7072df172 qrspec.c a2a9a5af4d62015e82b48b8316aea2b70031dcdc1ed2b829c0102ea5dc02aca2 qrspec.h -8730d006f1d45b90dc0ef9a20e4119420f15b37a09483c929baa4225e21f7900 README +a56773b55989ea5cae8a43f2d845ce0afa9576a26170937fbe36a69fee953cd4 README.md ace480f2e16001e276c73a5e965c282915ad81e2c28cce3ef574b5a8db7210e8 rsecc.c c731ebe26d58d5e5df3b2d694de0fb1c4ae80a36cf0559c49b04e989dee8b182 rsecc.h 8ed1af4414b5628845519581c82bf51ba2b4dee1f8352c1fd01b50afcd0a0ed7 split.c @@ -46,7 +43,6 @@ e26b20198a7393b3c060891876fa45edb81488aef9df6d6cf45893a605e5e5e4 tests/decoder.h adabfbddb0f25de2e2cae970195fcfdf11ad1fa66ce64e237d83f821346f64c4 tests/frame 23c283a3d3b5f1bbb3108603ebf05d7a95951ba86a288e09140eab612a5eb258 tests/Makefile.am -c8b819bf7f00c979ab0b6f0d0fb10289d2006bc6acda1737d2f1c383a60e1e66 tests/Makefile.in ebd71b937d4d39f382f8c57f362a01f11fd617b66dbdf6f1a3c4897c8c42e235 tests/prof_qrencode.c d4adcb234d4c31473cd9ffedd1bfa9645ba336d426640ba5893dfe6e75db171d tests/pthread_qrencode.c 62298641504b0a2c1d199cd7f656cb376959200169042de76f7c5950d2d42395 tests/rscode.c @@ -63,6 +59,7 @@ cf5792cbfb92ba46f7f5f14b98f00813b0e7e4f5e7c790c6a28793774474bf26 tests/test_monkey.c 3a2c58346d57f6bb2a634d6febf3c65ac524259a2d789657f8d60c678bf8d658 tests/test_mqrspec.c b9d8c569ba36a2258cb1ad0d1f85ce4fb2935fad519e902bade59aa9772321aa tests/test_qrencode.c +785fe14a6f8bc096b20ec271771fb09f22f29eb4f9d729f5b40d6b4cc824ce36 tests/test_qrenc.sh d0eee6eddf98ee4595c07f7da40c7de548651bf839b26995756e94db2599451f tests/test_qrinput.c ace7885e435ef77cc127da0ac23c724498aaa8d80d53b908063f79c9f0b7acce tests/test_qrspec.c fde9c2735ce94be51e1b0bbffe65415aa3afd2da5bd4c0e2c5e50e1a2f1ea3f7 tests/test_rs.c @@ -71,12 +68,4 @@ 6f35c0e1235b31d0068c4ab175d8110c736e60df0309d4be7b3e57dd62d316f6 tests/URI_testset.inc 6be3983fc397cd5dade1dd219ad6cbe7977f416410b1509984006ecec51605b5 tests/view_qrcode.c 92b5be1ca2239399232d51503715c848dae9bf3db71b1f03157bfa9779826910 TODO -c8af04e62bad4ab75dafd22119026e5e3943f385bdcbe7731a4938102453754c use/compile -1d9048b0ac9d4d1dfce7aa4e3a0b59ccfd32db2f7693814aa6f4c778560f5669 use/config.guess b522487f9c47661d321367d133f3d41247dd16d435f2d4b9c643dee95bf65eee use/config.rpath -5bf0da2576ebb21ab60a9d9291a85b40af0e956a9eafb709ca8b20dcb105f4ee use/config.sub -732bcd6b9e23f241e015d71b0a3a862104053aba20718c1f56b292cee7e29371 use/depcomp -608b76d735bb2ec2bcb1271644c3d5e7a428fb8d2338e114e8a48ebf91ccfd23 use/install-sh -2304d53af1f63b76a11651efdd18578adf2bda1ffc2c257100cba374b55f284b use/ltmain.sh -f038345dab184e538098d22a8edc423762da66a90ebe269f23bfef85287cd30c use/missing -7c1ae35455771ae32050c2ed109e3d297160b6d1a2f70b0278cf6968e5e7e98c use/test-driver ``` --- UPDATE 2025-09-30 A few commits have been added: 1. The first commit fixes the `$(package)_fetched` target, which erroneously succeeds on the second run after a failure on the master branch: ``` $ gmake -C depends clean-all $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ echo $? 0 ``` With the first commit applied: ``` $ gmake -C depends clean-all $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ gmake -C depends qrencode_fetched FALLBACK_DOWNLOAD_PATH="https://fallback.invalid" $ echo $? 2 ``` 2. The second and third commits allow the depends build subsystem to detect when the source tarball content has been modified and needs to be re-downloaded, even if the file name remains the same. ACKs for top commit: m3dwards: ACK `93a70a42d3` achow101: ACK `93a70a42d3` vasild: ACK `93a70a42d3` janb84: ACK `93a70a42d3` Tree-SHA512: 38b7c029070426196c747fc45c9d00bae534eeeb2d9cd9f221580fce8380f4f8aecb6c48b2563e322edd8c9534f5dd42d8f4e110ada42bb83568cf2dcfb7dc22	2025-10-07 16:57:58 -07:00
Hennadii Stepanov	ec5841888d	Merge bitcoin/bitcoin#32513 : ci: remove 3rd party js from windows dll gha job `156927903d` ci: Check windows manifests for all executables (Max Edwards) `e1a1b14c93` ci: use a more generic way of finding mt.exe (Max Edwards) `7ae0497eef` ci: remove 3rd party js from windows dll gha job (Max Edwards) Pull request description: The windows job uses the external dependency `ilammy/msvc-dev-cmd` which runs javascript. We use this to put various tools on the path such as `MSBuild.exe` and `mt.exe`. We can remove this dependency and use `vswhere.exe` directly to find these tools and create a "[Developer command prompt](https://github.com/microsoft/vswhere/wiki/Start-Developer-Command-Prompt#using-powershell)" as someone would on their dev machine. While in this area of the code, this PR also runs some additional manifest checks on the windows binaries. Fixes: #32508 ACKs for top commit: davidgumberg: crACK `156927903d` hebasto: ACK `156927903d`. Tree-SHA512: df640dff27579a1c95daddc5a5ba8fd655bbd0a6f2aff74d0f63439c7185c0b18a90abfee3f1f032fe833cd19b822ef71812f44b24c4c044222e46d01c271864	2025-10-08 00:44:05 +01:00
Ava Chow	d735e2e9b3	Merge bitcoin/bitcoin#32998 : Bump SCRIPT_VERIFY flags to 64 bit `652424ad16` test: additional test coverage for script_verify_flags (Anthony Towns) `417437eb01` script/verify_flags: extend script_verify_flags to 64 bits (Anthony Towns) `3cbbcb66ef` script/interpreter: make script_verify_flag_name an ordinary enum (Anthony Towns) `bddcadee82` script/verify_flags: make script_verify_flags type safe (Anthony Towns) `a5ead122fe` script/interpreter: introduce script_verify_flags typename (Anthony Towns) `4577fb2b1e` rpc: have getdeploymentinfo report script verify flags (Anthony Towns) `a3986935f0` validation: export GetBlockScriptFlags() (Anthony Towns) `5db8cd2d37` Move mapFlagNames and FormatScriptFlags logic to script/interpreter.h (Anthony Towns) Pull request description: We currently use 21 of 32 possible bits for `SCRIPT_VERIFY_*` flags, with open PRs that may use 8 more (#29247, #31989, #32247, #32453). The mutinynet fork that has included many experimental soft fork features is [already reusing bits here](`d4a86277ed/src/script/interpreter.h (L175-L195)`). Therefore, bump this to 64 bits. In order to make it easier to update this logic in future, this PR also introduces a dedicated type for the script flags, and disables implicit conversion between that type and the underlying integer type. To make verifying that this change doesn't cause flags to disappear, this PR also resurrects the changes from #28806 so that the script flags that are consensus enforced on each block can be queried via getdeploymentinfo. ACKs for top commit: instagibbs: reACK `652424ad16` achow101: ACK `652424ad16` darosior: ACK `652424ad16` theStack: Code-review ACK `652424ad16` 🎏 Tree-SHA512: 7b30152196cdfdef8b9700b571b7d7d4e94d28fbc5c26ea7532788037efc02e4b1d8de392b0b20507badfdc26f5c125f8356a479604a9149b8aae23a7cf5549f	2025-10-07 14:51:22 -07:00
Ava Chow	de1dc6b47b	Merge bitcoin/bitcoin#33515 : Improve LastCommonAncestor performance + add tests `3635d62f5a` chain: make use of pskip in LastCommonAncestor (optimization) (Pieter Wuille) `2e09d66fbb` tests: add unit tests for CBlockIndex::GetAncestor and LastCommonAncestor (Pieter Wuille) Pull request description: In theory, the `LastCommonAncestor` function in chain.cpp can take $\mathcal{O}(n)$ time, walking over the entire chain, if the forking point is very early, which could take ~milliseconds. I expect this to be very rare in normal occurrences, but it seems nontrivial to reason about worst cases as it's accessible from several places in net_processing. This PR modifies the algorithm to make use of the `CBlockIndex::pskip` skip pointers to find the forking point in sublinear time (a simulation shows that for heights up to $34 \cdot 4^k - 2$ and $k \geq 8$, no more than $k^2 + 10k + 13$ steps are ever needed), in a way that should be nearly free - at worst the same number of memory accesses should be made, with a tiny increase in computation. As it appears we didn't really have tests for this function, unit tests are added for that function as well as `CBlockIndex::GetAncestor()`. This is inspired by https://github.com/bitcoin/bitcoin/pull/32180#discussion_r2394877881 ACKs for top commit: optout21: ACK `3635d62f5a` achow101: ACK `3635d62f5a` vasild: ACK `3635d62f5a` mzumsande: Code Review ACK `3635d62f5a` furszy: ACK `3635d62f5a` stratospher: ACK `3635d62f5a`. Tree-SHA512: f9b7dea1e34c1cc1ec1da3fb9e90c4acbf4aaf0f04768844f538201efa6b11eeeefc97b720509e78c21878977192e2c4031fd8974151667e2e756247002b8164	2025-10-07 13:54:25 -07:00
Pieter Wuille	3635d62f5a	chain: make use of pskip in LastCommonAncestor (optimization) By using the pskip pointer, which regularly allows jumping back much faster than pprev, the forking point between two CBlockIndex entries can be found much faster. A simulation shows that no more than 136 steps are needed to jump anywhere within the first 2^20 block heights, and on average 65 jumps for uniform forking points around that height.	2025-10-02 10:34:12 -04:00
Pieter Wuille	2e09d66fbb	tests: add unit tests for CBlockIndex::GetAncestor and LastCommonAncestor	2025-10-02 10:34:09 -04:00
Max Edwards	156927903d	ci: Check windows manifests for all executables The other executables have manifests and these should be checked in addition to bitcoind. Skipping fuzz.exe, bench_bitcoin.exe and test_bitcoin-qt.exe as they do not have manifests.	2025-10-02 15:13:29 +01:00
Max Edwards	e1a1b14c93	ci: use a more generic way of finding mt.exe This sets up a vs developer command prompt and should hopefully should be more resilient to upstream changes Co-authored-by: David Gumberg <davidzgumberg@gmail.com>	2025-10-02 15:13:26 +01:00
Ryan Ofsky	c25a5e670b	init: Signal m_tip_block_cv on Ctrl-C Signal m_tip_block_cv when Ctrl-C is pressed or SIGTERM is received, the same way it is currently signalled when the `stop` RPC is called. This lets RPC calls like `waitforblockheight` and IPC calls like `waitTipChanged` be interrupted, instead of waiting for their original timeouts and delaying shutdown. Historical notes: - The behavior where `stop` RPC signals `m_tip_block_cv`, but CTRL-C does not, has been around since the condition variable was introduced in #30409 (`7eccdaf160`). - The signaling was later moved without changing behavior in #30967 (`5ca28ef28b`). This commit moves it again to the Interrupt() function, which is probably the place it should have been added initially, so it works for Ctrl-C shutdowns as well as `stop` shutdowns. - A Qt shutdown bug calling wait methods was fixed previously in #18452 (`da73f1513a`), and this change updates that fix to avoid the hang happening again in Qt.	2025-10-01 13:00:33 -04:00
Ryan Ofsky	6a29f79006	test: Test SIGTERM handling during waitforblockheight call Currently when CTRL-C is pressed and there is an active `waitforblockheight`, or `waitforblock`, or `waitfornewblock` RPC call, or a mining interface `waitTipChanged` IPC call with a long timeout, the node will not shut down right away, and will wait for the timeout to be reached before exiting. This behavior is not ideal and only happens when the node is stopped with CTRL-C or SIGTERM. When the node is stopped with `bitcoin-cli stop`, the wait calls are interrupted and the node does shut down right away. The next commit improves node behavior. This commit just adds test coverage to simplify the next commit and clarify the change in behavior there.	2025-09-30 14:47:17 -04:00
Hennadii Stepanov	93a70a42d3	depends: Update URL for `qrencode` package source tarball The https://fukuchi.org/ homepage no longer links to the source tarball, and previously available files appear to have been removed. The homepage now instructs users to download source tarballs from the GitHub releases page instead. The diff between the source trees is immaterial.	2025-09-30 11:26:47 +01:00
Hennadii Stepanov	6de8051263	depends: Use hash instead of file name for package download stamp The package version is still included for convenience.	2025-09-30 11:26:29 +01:00
Hennadii Stepanov	46135d90ea	depends: Drop redundant check for downloaded file The `fetch_file` commands are invoked for the `$($(package)_fetched)` target, so the existence of the download stamp has already been tested.	2025-09-30 11:22:50 +01:00
Hennadii Stepanov	771978952a	depends: Fix `$(package)_fetched` target Ensure the download timestamp is created only after a successful download.	2025-09-30 11:20:12 +01:00
Max Edwards	7ae0497eef	ci: remove 3rd party js from windows dll gha job We can use vswhere.exe directly to create a vs developer prompt and so can remove this third party dependency. Co-authored-by: David Gumberg <davidzgumberg@gmail.com>	2025-09-25 18:12:02 +01:00
Anthony Towns	652424ad16	test: additional test coverage for script_verify_flags	2025-09-11 11:24:09 +10:00
Anthony Towns	417437eb01	script/verify_flags: extend script_verify_flags to 64 bits	2025-08-14 10:17:32 +10:00
Anthony Towns	3cbbcb66ef	script/interpreter: make script_verify_flag_name an ordinary enum Instead of having `SCRIPT_VERIFY_FOO = (1U << n)` just have it be `n` directly, and do the bit shifting when converting it to `script_verify_flags`.	2025-08-14 10:17:32 +10:00
Anthony Towns	bddcadee82	script/verify_flags: make script_verify_flags type safe `using script_verify_flags = uint32_t` allows implicit conversion to and from int, so replace it with a class to have the compiler ensure we use the correct type. Provide from_int and as_int to allow for explicit conversions when desired. Introduces the type `script_verify_flag_name` for the individual flag name enumeration.	2025-08-14 10:17:32 +10:00
Anthony Towns	a5ead122fe	script/interpreter: introduce script_verify_flags typename Previously the SCRIPT_VERIFY_* flags were specified as either uint32_t, unsigned int, or unsigned. This converts them to a common type alias in preparation for changing the underlying type.	2025-08-14 10:17:32 +10:00
Anthony Towns	4577fb2b1e	rpc: have getdeploymentinfo report script verify flags	2025-08-14 10:17:32 +10:00
Anthony Towns	a3986935f0	validation: export GetBlockScriptFlags()	2025-08-14 10:17:32 +10:00
Anthony Towns	5db8cd2d37	Move mapFlagNames and FormatScriptFlags logic to script/interpreter.h Moves FormatScriptFlags logic into GetScriptFlagNames which returns a vector of strings. For completeness, also has GetScriptFlagNames report on any bits that do not match a known script flag.	2025-08-14 10:17:30 +10:00