https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93805
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:1f6c1c82eb5001a844b5ac535f6aba4a3257031f commit r10-7345-g1f6c1c82eb5001a844b5ac535f6aba4a3257031f Author: Patrick Palka <ppa...@redhat.com> Date: Fri Mar 13 14:30:39 2020 -0400 c++: Avoid a suspicious -Wnoexcept warning [PR93805] In this PR we're emitting -Wnoexcept warnings about potentially-throwing NSDMIs when computing the noexcept specification of a class's defaulted default constructor. Although these warnings are in some sense valid, this patch takes the route of suppressing them, because: 1. the warning message is confusing in its current form; 2. warning for 'struct C { B b = B(); };' but not for 'struct C { B b; };' is inconsistent; and 3. emitting a warning here arguably doesn't fall under the umbrella of -Wnoexcept, whose documentation says it warns only when a noexcept-expression evaluates to false, but there are no noexcept-expressions here. gcc/cp/ChangeLog: PR c++/93805 * except.c (maybe_noexcept_warning): Add TODO comment. * method.c (walk_field_subobs): Pass tf_none to expr_noexcept_p. gcc/testsuite/ChangeLog: PR c++/93805 * g++.dg/warn/Wnoexcept2.C: New test.