https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122248
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by David Faust <[email protected]>: https://gcc.gnu.org/g:3073ae7fa70b29a495831359cc31d38ba1541d73 commit r16-4754-g3073ae7fa70b29a495831359cc31d38ba1541d73 Author: David Faust <[email protected]> Date: Tue Oct 28 11:13:25 2025 -0700 dwarf: handle repeated decl with different btf_decl_tags [PR122248] The check in gen_btf_tag_dies which asserted that if the target DIE already had an annotation then it must be the same as the one we are attempting to add was too strict. It is valid for multiple declarations of the same object to appear with different decl_tags, in which case the tags from each are accumulated in DECL_ATTRIBUTES. The existing annotation may not be the same as the one being added, since new tags will be added to the head of the chain. The proper behavior is to always replace any existing AT_GNU_annotation to refer to the chain of annotations we have just constructed, whether the head of that chain is the same or not. PR debug/122248 gcc/ * dwarf2out.cc (gen_btf_tag_dies): Always replace an existing AT_GNU_annotation on the target die. gcc/testsuite/ * gcc.dg/debug/dwarf2/dwarf-btf-decl-tag-4.c: New. * gcc.dg/debug/dwarf2/dwarf-btf-decl-tag-5.c: New. * gcc.dg/debug/dwarf2/dwarf-btf-decl-tag-6.c: New.
