trace: Workaround GCC bug compiling with old systemtap

Github-Pull: #33310
Rebased-From: 93a29ff283
This commit is contained in:
Luke Dashjr 2025-09-04 19:25:33 +00:00 committed by fanquake
parent 324caa8497
commit e97588fc3d
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2 changed files with 11 additions and 0 deletions

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@ -36,6 +36,10 @@ if(USDT_INCLUDE_DIR)
include(CheckCXXSourceCompiles)
set(CMAKE_REQUIRED_INCLUDES ${USDT_INCLUDE_DIR})
check_cxx_source_compiles("
#if defined(__arm__)
# define STAP_SDT_ARG_CONSTRAINT g
#endif
// Setting SDT_USE_VARIADIC lets systemtap (sys/sdt.h) know that we want to use
// the optional variadic macros to define tracepoints.
#define SDT_USE_VARIADIC 1

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@ -9,6 +9,13 @@
#ifdef ENABLE_TRACING
// Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103395
// systemtap 4.6 on 32-bit ARM triggers internal compiler error
// (this workaround is included in systemtap 4.7+)
#if defined(__arm__)
# define STAP_SDT_ARG_CONSTRAINT g
#endif
// Setting SDT_USE_VARIADIC lets systemtap (sys/sdt.h) know that we want to use
// the optional variadic macros to define tracepoints.
#define SDT_USE_VARIADIC 1