[Bug middle-end/13182] -fstack-check probes too distant when allocating on stack

ebotcazou at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue May 30 11:10:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13182

--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> To be clear: x86/Linux and x86-64/Linux (and for them there is no protection
> area during the probing).

I misremembered: there is exactly one page of protection area for them because
of the way the unwinding mechanism (run on the alternate stack) restores the
regular execution of the program.


More information about the Gcc-bugs mailing list