[Bug c++/101859] New: Misleading error message in designated initializers

[hewillk at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101859

            Bug ID: 101859
           Summary: Misleading error message in designated initializers
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

struct Cat { const char* name; };
struct Zoo { Cat cat; };

int cat;
Zoo zoo{.cat = cat};

Clang rejects it with:
<source>:5:16: error: cannot initialize a member subobject of type 'const char
*' with an lvalue of type 'int'
Zoo zoo{.cat = cat};
               ^~~

MSVC rejects it with:
source>(5): error C2440: 'initializing': cannot convert from 'int' to 'const
char *'

However, GCC rejects it with:
<source>:5:19: error: 'Cat' has no non-static data member named 'cat'
    5 | Zoo zoo{.cat = cat};
      |                   ^