Discovered as a failure of GDB test:
FAIL: gdb.base/stack-checking.exp: continue to breakpoint: breakpoint for big
frame
With current SVN head @144426:
/* t.c */
void foo() { char buf[524188]; }
int main() { foo(); return 0; }
i686-unknown-linux-gnu-gcc t.c -fstack-check && ./a.out
Segmentation fault
AFAICT, this is a regression from 4.3.1
Problem also happens in x86_64-unknown-linux-gnu.
Minimal size to crash appears to be about 57058.
--
Summary: -fstack-check + large frame == SIGSEGV
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ppluzhnikov at google dot com
GCC build triplet: i686-unknown-linux-gnu
GCC host triplet: i686-unknown-linux-gnu
GCC target triplet: i686-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39306
