https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125261
--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Uecker <[email protected]>: https://gcc.gnu.org/g:dee30fc0e980ee26a804a74da74decc0cea10b8f commit r17-483-gdee30fc0e980ee26a804a74da74decc0cea10b8f Author: Martin Uecker <[email protected]> Date: Tue May 12 07:11:38 2026 +0200 c: avoid false positive for useless casts and generic [PR125261] To reduce the number of false positives, we guard -Wuseless-cast by c_inhibit_evaluation_warnings and also increment it for a generic association if we have seen a prior match for a (non-default) association. This covers the common case where the default association comes last. If there is another association selected after we have seen a default, we still have false positives. PR c/125261 gcc/c/ChangeLog: * c-parser.cc (c_parser_generic_selection): Modify logic for c_inhibit_evaluation_warnings. * c-typeck.cc (build_c_cast): Use c_inhibit_evaluation_warnings. gcc/testsuite/ChangeLog: * gcc.dg/pr125261.c: New test.
