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#include <assert.h>
#include <setjmp.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
// Regression test for bug 91162: if a client had a SEGV signal handler,
// and jumped to a bogus address, Valgrind would abort. With the fix,
// the following test runs to completion correctly.
static jmp_buf myjmpbuf;
static
void SIGSEGV_handler(int signum)
{
__builtin_longjmp(myjmpbuf, 1);
}
int main(void)
{
struct sigaction sigsegv_new, sigsegv_saved;
int res;
/* Install own SIGSEGV handler */
sigsegv_new.sa_handler = SIGSEGV_handler;
sigsegv_new.sa_flags = 0;
#if !defined(_AIX)
sigsegv_new.sa_restorer = NULL;
#endif
res = sigemptyset( &sigsegv_new.sa_mask );
assert(res == 0);
res = sigaction( SIGSEGV, &sigsegv_new, &sigsegv_saved );
assert(res == 0);
if (__builtin_setjmp(myjmpbuf) == 0) {
// Jump to zero; will cause seg fault
#if defined(__powerpc64__) || defined(_AIX)
unsigned long int fake_fndescr[3];
fake_fndescr[0] = 0;
fake_fndescr[1] = 0;
fake_fndescr[2] = 0;
((void(*)(void)) fake_fndescr) ();
#else
void (*fn)(void) = 0;
fn();
#endif
fprintf(stderr, "Got here??\n");
} else {
fprintf(stderr, "Signal caught, as expected\n");
}
return 0;
}
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