[Bug c/88700] New: C11 Annex K builtins

[jg at jguk dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88700

            Bug ID: 88700
           Summary: C11 Annex K builtins
           Product: gcc
           Version: 8.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jg at jguk dot org
  Target Milestone: ---

Would GCC consider adding C11 Annex K safe functions as builtins?
I feel they would be very useful. Currently only we use them on MSCV builds.

Clang is thinking of adding these bultins - this is where the thread began
http://lists.llvm.org/pipermail/cfe-dev/2016-February/047149.html

As JF explains, they can just wrap regular builtins
(memcpy_s, memmove_s, strcpy_s, strncpy_s, strcat_s, strncat_s, strtok_s,
memset_s, strerror_s, strerrorlen_s, strnlen_s)

Saw this list of current GCC builtins
https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html


glibc "stdint.h" would need this adding as well - should I open a glibc ticket
for that proposed change?

My code below:

#ifdef (__STDC_WANT_LIB_EXT1__)
#if __STDC_WANT_LIB_EXT1__ >= 1
#define RSIZE_MAX (SIZE_MAX >> 1)

#endif
#endif