aaron.ballman added inline comments.

================
Comment at: include/clang/Basic/Builtins.def:983
 // POSIX string.h
+LIBBUILTIN(memccpy, "v*v*vC*iz",  "f",     "string.h", ALL_GNU_LANGUAGES)
 LIBBUILTIN(stpcpy, "c*c*cC*",     "f",     "string.h", ALL_GNU_LANGUAGES)
----------------
xbolva00 wrote:
> aaron.ballman wrote:
> > xbolva00 wrote:
> > > aaron.ballman wrote:
> > > > Isn't `memccpy` supported by Visual Studio? What should happen there?
> > > ”This POSIX function is deprecated. Use the ISO C++ conformant _memccpy 
> > > instead.“
> > Thanks for verifying it's still supported (deprecated != unsupported). We 
> > do support other Microsoft builtins, so should this one be added?
> Ok, I will add it.
> 
> One last question, should I somehow represent that memccpy is in C 20 (if so, 
> how) ?
You should probably start a new section for C2x library functions and add 
`memccpy`, `strdup`, and `strndup` to it.

Also, just to double-check: we don't encode `restrict` into builtin signatures, 
do we? (Should we?)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68377/new/

https://reviews.llvm.org/D68377



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