Declaration conditions that declare an array outside of the declarator are incorrectly rejected

The following program demonstrates the issue:
```cpp
int main(){
typedef int T[];
if(T b={0});
}
```
Clang appears to interpret this as violating:
> The declarator shall not specify a function or an array.

Section 8.1 [stmt.pre] Paragraph 4 N5032

This program does not use the declarator to specify an array, instead it is specified in the decl-specifier-seq so it should be accepted as it is with GCC. See also: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124199