[Bug c++/96119] New: GCC accepts invalid qualifier in a try-catch block

[haoxintu at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96119

            Bug ID: 96119
           Summary: GCC accepts invalid qualifier in a try-catch block
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: haoxintu at gmail dot com
  Target Milestone: ---

Hi, all.

This code might be an invalid code, but GCC accepts this well.

$cat test.cc
int main(){
    try {}
    catch (int () & ){}
    return 0;
}

While in Clang, it says:
error: non-member function cannot have '&' qualifier

In ICC:
error: a ref-qualifier is not allowed here

All GCC versions from 5.1 to trunk behave the same.

Is this also an invalid code for GCC or is there something I misunderstanding?

Thanks,
Haoxin