[Bug c/80454] -Wmissing-braces wrongly warns about universal zero initializer {0}

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80454

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
To fix this, we have to somehow propagate the flag constructor_zeroinit up in
pop_init_level.