------- Comment #42 from ebotcazou at gcc dot gnu dot org 2009-11-07 10:05 ------- > As I understand it, there is still a patch pending for i386?
Yes, the current stack checking method is not bullet-proof and can fail to detect stack overflows; a warning should be issued in that case though. The enhanced method indeed requires another patch for the x86 back-end, that I plan to resubmit for 4.5 once I've fixed the optimization bug exhibited by a few ACATS tests. > Does anyone plan to backport this patch into gcc-4_4-branch? No, no plan to backport this as far as I'm concerned. Note that some support code is needed in the Ada runtime (init.c, see the comments). > I am considering applying this patch (up to r153918) in Debian's > gnat-4.4. Before I do that, I'd like to know whether this would break > ABI compatibility. Consider the following scenario: -fstack-check is broken with GCC 4.4 on x86/x86-64 Linux, it generates code that will easily segfault so I doubt compatibility really matters. In any case, -fstack-check doesn't change the ABI. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20548
