[Bug c++/120646] New: Parenthesized declarators of bit-fields are incorrectly rejected

[luigighiron at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120646

            Bug ID: 120646
           Summary: Parenthesized declarators of bit-fields are
                    incorrectly rejected
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: luigighiron at gmail dot com
  Target Milestone: ---

The following code is not accepted by GCC:

struct S{
    int(x):10;
};
int main(){}

This code should be valid, declarators can normally be parenthesized. GCC
accepts this code when bit-fields are not used. Clang and MSVC accept this code
with and without bit-fields. Also, the error message generated for this program
is very strange: "bit-field 'x' has non-integral type 'int'".