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https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-10 05:37:06 +00:00
235c116f2d
This fixes the tc18 and tc20 testcases. On some bad semaphores glibc now might just abort, we catch the SIGABRT and turn it into a EINVAL. The program will see this, but the helgrind wrapper won't. Which works for tc18 since there is an alternate exp file with that result (silent bad sem_post). We add a similar alternative exp file for tc21. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15620
42 lines
811 B
C
42 lines
811 B
C
#include <semaphore.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <errno.h>
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#include <assert.h>
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static sigjmp_buf env;
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/*
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* Newer glibc crashes on really bogus semaphors.
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* Catch a SIGABRT and turn it into a EINVAL.
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*/
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static void abrt_handler( int signum, siginfo_t *siginfo, void *sigcontext ) {
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siglongjmp( env, EINVAL );
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}
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static int safe_sem_post( sem_t *sem ) {
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struct sigaction sa;
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struct sigaction oldsa;
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int r, e;
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sa.sa_handler = NULL;
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sa.sa_sigaction = abrt_handler;
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sigemptyset( &sa.sa_mask );
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sa.sa_flags = SA_SIGINFO;
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sigaction( SIGABRT, &sa, &oldsa );
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if ( ( e = sigsetjmp( env, 1 ) ) == 0 ) {
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r = sem_post( sem );
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} else {
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r = -1;
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}
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errno = e;
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sigaction( SIGABRT, &oldsa, NULL );
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return r;
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}
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#define sem_post safe_sem_post
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