https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96078
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:d455130553544ee838b5215e76ccad22304cde39 commit r10-9413-gd455130553544ee838b5215e76ccad22304cde39 Author: Jason Merrill <ja...@redhat.com> Date: Thu Feb 11 22:01:19 2021 -0500 cgraph: flatten and same_body aliases [PR96078] The patch for PR92372 made us start warning about a flatten attribute on an alias. But in the case of C++ 'tor base/complete variants, the user didn't create the alias. If the alias target also has the attribute, the alias points to a flattened function, so we shouldn't warn. gcc/ChangeLog: PR c++/96078 * cgraphunit.c (process_function_and_variable_attributes): Don't warn about flatten on an alias if the target also has it. * cgraph.h (symtab_node::get_alias_target_tree): New. gcc/testsuite/ChangeLog: PR c++/96078 * g++.dg/ext/attr-flatten1.C: New test.
