https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104407
--- Comment #17 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:be9cd0ca8a5f13cfee6a39b217d439a25c53553a commit r12-7129-gbe9cd0ca8a5f13cfee6a39b217d439a25c53553a Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Feb 9 15:17:52 2022 +0100 dwarf2out: Don't call expand_expr during early_dwarf [PR104407] As mentioned in the PR, since PR96690 r11-2834 we call rtl_for_decl_init which can call expand_expr already during early_dwarf. The comment and PR explains it that the intent is to ensure the referenced vars and functions are properly mangled because free_lang_data doesn't cover everything, like template parameters etc. It doesn't work well though, because expand_expr can set DECL_RTLs e.g. on referenced vars and keep them there, and they can be created e.g. with different MEM_ALIGN compared to what they would be created with if they were emitted later. So, the following patch stops calling rtl_for_decl_init and instead for cases for which rtl_for_decl_init does anything at all walks the initializer and ensures referenced vars or functions are mangled. 2022-02-09 Jakub Jelinek <ja...@redhat.com> PR debug/104407 * dwarf2out.cc (mangle_referenced_decls): New function. (tree_add_const_value_attribute): Don't call rtl_for_decl_init if early_dwarf. Instead walk the initializer and try to mangle vars or functions referenced from it. * g++.dg/debug/dwarf2/pr104407.C: New test.
