[Bug c++/57111] Generalize -Wfree-nonheap-object to delete

[msebor at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57111

--- Comment #14 from Martin Sebor <msebor at gcc dot gnu.org> ---
The following enables the warning for the test case reported in comment #0 (and
all libstdc++ code):
https://gcc.gnu.org/pipermail/gcc-patches/2020-December/561378.html