| commit | 46432be2f1d4de962b51ca6b9f80fc37744be9f7 | |
| author | H.J. Lu <hjl.tools@gmail.com> | |
| Tue, 19 Dec 2023 17:55:25 +0000 (19 09:55 -0800) | ||
| committer | H.J. Lu <hjl.tools@gmail.com> | |
| Tue, 19 Dec 2023 21:39:34 +0000 (19 13:39 -0800) | ||
| tree | 2ca2cea121c9868c472abc35226e5c881fbbc996 | treesnapshot (tar.gz zip) |
| parent | cad5703e4f80841b7f7e3fe57127bd0df7ddb86e | commitdiff |
tst-setcontext10.c: Undef _FORTIFY_SOURCE
When _FORTIFY_SOURCE is defined to 2, ____longjmp_chk is called,
instead of longjmp. ____longjmp_chk compares the relative stack
values to decide if it is called from a stack frame which called
setjmp. If not, ____longjmp_chk assumes that an alternate signal
stack is used. Since comparing the relative stack values isn't
reliable with user context, when there is no signal, ____longjmp_chk
will fail. Undefine _FORTIFY_SOURCE to avoid ____longjmp_chk in
user context test.
When _FORTIFY_SOURCE is defined to 2, ____longjmp_chk is called,
instead of longjmp. ____longjmp_chk compares the relative stack
values to decide if it is called from a stack frame which called
setjmp. If not, ____longjmp_chk assumes that an alternate signal
stack is used. Since comparing the relative stack values isn't
reliable with user context, when there is no signal, ____longjmp_chk
will fail. Undefine _FORTIFY_SOURCE to avoid ____longjmp_chk in
user context test.
| stdlib/tst-setcontext10.c | diffblobblamehistory |