http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #9 from Kostya Serebryany 2012-11-28
14:00:53 UTC ---
Correct.
__asan_handle_no_return may loose some of the stack-buffer overflows.
It is also used to handle clone case, where the entire stack should be
unpoisoned.
http:/
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #8 from Jakub Jelinek 2012-11-28
13:47:41 UTC ---
If I understand it right, that clears all shadow memory corresponding to
current thread's stack, rather than trying to figure out into which function it
longjmps and clearing on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #7 from Kostya Serebryany 2012-11-28
13:37:02 UTC ---
Note that the LLVM implementation inserts a call to __asan_handle_no_return
before every "no-return" call instruction.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
Jakub Jelinek changed:
What|Removed |Added
CC||howarth at nitro dot
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #5 from Eric Botcazou 2012-11-27
18:06:58 UTC ---
> For what purpose would any one avoid longjmp call, other than for
> performance?
> Under asan, performance already drops by 2x, so using calls will not hurt
> much.
> Of c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #4 from Konstantin Serebryany 2012-11-27 17:52:02 UTC ---
For what purpose would any one avoid longjmp call, other than for performance?
Under asan, performance already drops by 2x, so using calls will not hurt much.
Of course
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
--- Comment #3 from Eric Botcazou 2012-11-27
17:44:06 UTC ---
> Can they be lowered to regular setjmp/longjmp calls?
> If yes, then the run-time library interceptor should take care of them.
The purpose of __builtin_setjmp/__builtin_lon
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
Konstantin Serebryany changed:
What|Removed |Added
CC||konstantin.s.serebryany at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55485
Eric Botcazou changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
