[Bug c++/110064] New: spurious missing initializer for member for anonymous

[barry.revzin at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110064

            Bug ID: 110064
           Summary: spurious missing initializer for member for anonymous
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: barry.revzin at gmail dot com
  Target Milestone: ---

This program (reduced from StackOverflow:
https://stackoverflow.com/q/76375145/2069064):

struct B { };
struct D : B {
    int x;
    int y;
};

int main(int, char**) {
    D d = {.x=1, .y=2};
    (void)d;
}

with -Wall -Wextra gives a warning on:

<source>:8:22: warning: missing initializer for member 'D::<anonymous>'
[-Wmissing-field-initializers]
    8 |     D d = {.x=1, .y=2};
      |      

But there's... no member here that isn't initialized.