https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114931
--- Comment #22 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:1d89cb43943e77d0bbb48fd5a58a352bdd3d82c7 commit r14-10211-g1d89cb43943e77d0bbb48fd5a58a352bdd3d82c7 Author: Richard Biener <rguent...@suse.de> Date: Fri May 3 10:44:50 2024 +0200 middle-end/114931 - type_hash_canon and structual equality types TYPE_STRUCTURAL_EQUALITY_P is part of our type system so we have to make sure to include that into the type unification done via type_hash_canon. This requires the flag to be set before querying the hash which is the biggest part of the patch. PR middle-end/114931 gcc/ * tree.cc (type_hash_canon_hash): Hash TYPE_STRUCTURAL_EQUALITY_P. (type_cache_hasher::equal): Compare TYPE_STRUCTURAL_EQUALITY_P. (build_array_type_1): Set TYPE_STRUCTURAL_EQUALITY_P before probing with type_hash_canon. (build_function_type): Likewise. (build_method_type_directly): Likewise. (build_offset_type): Likewise. (build_complex_type): Likewise. * attribs.cc (build_type_attribute_qual_variant): Likewise. gcc/c-family/ * c-common.cc (complete_array_type): Set TYPE_STRUCTURAL_EQUALITY_P before probing with type_hash_canon. gcc/testsuite/ * gcc.dg/pr114931.c: New testcase. (cherry picked from commit b09c2e9560648b0cf993c2ca9ad972c34e6bddfa)
