https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108147
--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:158b18ffa510105b239bd2f4a253ed33e21fcebc commit r13-4781-g158b18ffa510105b239bd2f4a253ed33e21fcebc Author: Jakub Jelinek <ja...@redhat.com> Date: Mon Dec 19 14:20:36 2022 +0100 modula2: Fix up bootstrap on powerpc64le-linux [PR108147] As mentioned in the PR, bootstrap with m2 enabled currently fails on powerpc64le-linux, we get weird ICE after printing some diagnostics. The problem is that mc creates from *.def prototypes like extern void m2linemap_WarningAtf (m2linemap_location_t location, void * message); but the actual function definitions use void m2linemap_WarningAtf (m2linemap_location_t location, void * message, ...) { code } and on powerpc64le-linux such lying about the prototype results in wrong-code, on the caller side we assume the function isn't varargs and so don't reserve 64 bytes in the frame for it, while the callee relies on the area being reserved and stores into it. Fixed by adding non-stdarg wrappers around stdarg functions (because we want va_list and pass it to diagnostics functions). 2022-12-19 Jakub Jelinek <ja...@redhat.com> PR modula2/108147 * gm2-gcc/m2linemap.def (ErrorAtf, WarningAtf, NoteAtf): Comment out prototypes with varargs. * gm2-gcc/m2linemap.h (m2linemap_ErrorAtf, m2linemap_WarningAtf, m2linemap_NoteAtf): No longer varargs. * gm2-gcc/m2linemap.cc (m2linemap_ErrorAtf): Turned into a non-varargs wrapper around ... (m2linemap_ErrorAtf_1): ... this. New static function. (m2linemap_WarningAtf): Turned into a non-varargs wrapper around ... (m2linemap_WarningAtf_1): ... this. New static function. (m2linemap_NoteAtf): Turned into a non-varargs wrapper around ... (m2linemap_NoteAtf_1): ... this. New static function.
