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Fix write() return value warnings using compiler pragmas in signal_handler

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2025-08-17 12:22:24 -04:00
parent 44c7737fa7
commit 46977c882c
2 changed files with 13 additions and 7 deletions
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2
VERSION
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@@ -1 +1 @@
0.1.31 0.1.32

18
event_miner.c
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@@ -321,14 +321,18 @@ static void signal_handler(int sig) {
// Log the signal (async-signal-safe functions only) // Log the signal (async-signal-safe functions only)
const char* sig_name = get_signal_name(sig); const char* sig_name = get_signal_name(sig);
// Write to stderr using async-signal-safe functions (ignore return values in signal handler) // Disable warn_unused_result for signal handler write() calls
(void)write(STDERR_FILENO, "\n[SIGNAL] Received ", 19); #pragma GCC diagnostic push
(void)write(STDERR_FILENO, sig_name, strlen(sig_name)); #pragma GCC diagnostic ignored "-Wunused-result"
(void)write(STDERR_FILENO, "\n", 1);
// Write to stderr using async-signal-safe functions
write(STDERR_FILENO, "\n[SIGNAL] Received ", 19);
write(STDERR_FILENO, sig_name, strlen(sig_name));
write(STDERR_FILENO, "\n", 1);
// For fatal signals, try emergency shutdown // For fatal signals, try emergency shutdown
if (sig == SIGSEGV || sig == SIGABRT || sig == SIGFPE || sig == SIGBUS) { if (sig == SIGSEGV || sig == SIGABRT || sig == SIGFPE || sig == SIGBUS) {
(void)write(STDERR_FILENO, "[SIGNAL] Attempting emergency shutdown...\n", 42); write(STDERR_FILENO, "[SIGNAL] Attempting emergency shutdown...\n", 42);
emergency_shutdown(); emergency_shutdown();
// Reset signal handler to default and re-raise // Reset signal handler to default and re-raise
@@ -336,10 +340,12 @@ static void signal_handler(int sig) {
raise(sig); raise(sig);
} else if (sig == SIGINT || sig == SIGTERM) { } else if (sig == SIGINT || sig == SIGTERM) {
// Graceful shutdown for interrupt signals // Graceful shutdown for interrupt signals
(void)write(STDERR_FILENO, "[SIGNAL] Initiating graceful shutdown...\n", 41); write(STDERR_FILENO, "[SIGNAL] Initiating graceful shutdown...\n", 41);
emergency_shutdown(); emergency_shutdown();
} }
#pragma GCC diagnostic pop
in_signal_handler = 0; in_signal_handler = 0;
} }