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host-darwin.c (segv_handler): Unblock SEGV so we don't go into an infinite loop.

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* config/rs6000/host-darwin.c (segv_handler): Unblock SEGV so
	we don't go into an infinite loop.

From-SVN: r108070
This commit is contained in:
Geoffrey Keating 2005-12-05 19:37:11 +00:00 • committed by Geoffrey Keating
parent c44ca1626c
commit 68e58c3346
2 changed files with 9 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-12-05 Geoffrey Keating <geoffk@apple.com>
* config/rs6000/host-darwin.c (segv_handler): Unblock SEGV so
we don't go into an infinite loop.
2005-12-05 Paolo Bonzini <bonzini@gnu.org>
* config/rs6000/predicates.md (logical_const_operand): Split

4
gcc/config/rs6000/host-darwin.c
View file

@ -58,11 +58,15 @@ segv_handler (int sig ATTRIBUTE_UNUSED,
void *scp)
{
ucontext_t *uc = (ucontext_t *)scp;
sigset_t sigset;
unsigned faulting_insn;
/* The fault might have happened when trying to run some instruction, in
which case the next line will segfault _again_. Handle this case. */
signal (SIGSEGV, segv_crash_handler);
sigemptyset (&sigset);
sigaddset (&sigset, SIGSEGV);
sigprocmask (SIG_UNBLOCK, &sigset, NULL);
faulting_insn = *(unsigned *)uc->uc_mcontext->ss.srr0;