[Bug rtl-optimization/121201] [16 regression] genpreds uses deprecated rawmemchr, breaks build on musl based system

[stefansf at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121201

--- Comment #2 from Stefan Schulze Frielinghaus <stefansf at gcc dot gnu.org> 
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Committed in r16-2421-g65f044a3ef6f5a