[Bug c++/85374] New: Confusing diagnostic for function with missing brace that looks like a function-try-block

["redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85374

            Bug ID: 85374
           Summary: Confusing diagnostic for function with missing brace
                    that looks like a function-try-block
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: minor
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---

I had a function that originally looked like:

int func(int some, int params, int blah) {

and I removed the parameters, unintentionally also removing the opening brace
at the end of the line, to give:

int func()
// Oops, opening brace missing
    try {
      throw 1;
    }
    catch (...) {
        return 0;
    }
    return 1;
}

a.cc:9:5: error: expected unqualified-id before 'return'
     return 1;
     ^~~~~~
a.cc:10:1: error: expected declaration before '}' token
 }
 ^

Clang does a bit better by saying "extraneous closing brace":

a.cc:9:5: error: expected unqualified-id
    return 1;
    ^
a.cc:10:1: error: extraneous closing brace ('}')
}
^
2 errors generated.


I couldn't figure out what was wrong with the code from GCC's error, and only
saw the problem after trying to compile it with Clang.