https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108079
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:e4984838f6af868399ef9d885377199c38907ee1 commit r12-9287-ge4984838f6af868399ef9d885377199c38907ee1 Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Mar 10 10:10:24 2023 +0100 c, c++, cgraphunit: Prevent duplicated -Wunused-value warnings [PR108079] On the following testcase, we warn with -Wunused-value twice, once in the FEs and later on cgraphunit again with slightly different wording. The following patch fixes that by registering a warning suppression in the FEs when we warn and not warning in cgraphunit anymore if that happened. 2023-03-10 Jakub Jelinek <ja...@redhat.com> PR c/108079 gcc/ * cgraphunit.cc (check_global_declaration): Don't warn for unused variables which have OPT_Wunused_variable warning suppressed. gcc/c/ * c-decl.cc (pop_scope): Suppress OPT_Wunused_variable warning after diagnosing it. gcc/cp/ * decl.cc (poplevel): Suppress OPT_Wunused_variable warning after diagnosing it. gcc/testsuite/ * c-c++-common/Wunused-var-18.c: New test. (cherry picked from commit 2c63cc7268fd5615997989f153e9405d0f5aaa50)
