https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105043
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|MOVED |---
Summary|Please document |Documentation for
|-D_FORTIFY_SOURCE |__builtin_object_size and
| |other Object Size checking
| |builtin functions should
| |mention - D_FORTIFY_SOURCE
Severity|normal |enhancement
Status|RESOLVED |NEW
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I do think we should mention in the section about __builtin_object_size that
this used in connection with the -D_FORTIFY_SOURCE feature of some libc's.
That is on this page:
https://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html#Object-Size-Checking
Mention that the libc feature -D_FORTIFY_SOURCE uses these builtins.
I am not 100% sure on the exact wording but that should give a hint to the user
of GCC to look into glibc/libc documentation for -D_FORTIFY_SOURCE.
