[Bug c++/95288] New: Poor error message with function-scope enum definition

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95288

            Bug ID: 95288
           Summary: Poor error message with function-scope enum definition
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nathan at gcc dot gnu.org
  Target Milestone: ---

Created attachment 48587
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48587&action=edit
testcase

A malformed enum definition in function-scope gives a very poor diagnostic.  In
this example I typoed a '.' (DOT) for a ',' (COMMA).  the compiler complains at
the 'enum' token, not at the dot.  

Contrast the error for X and (namespace-scope) Y.  Class-scope enums behave
like namespace-scope ones.

(1)bester:139>g++ -c f.cc
f.cc: In function ‘void f()’:
f.cc:4:3: error: expected primary-expression before ‘enum’
    4 |   enum X
      |   ^~~~
f.cc: At global scope:
f.cc:13:4: error: expected ‘}’ before ‘.’ token
   13 |   c. // DOT
      |    ^
f.cc:12:1: note: to match this ‘{’
   12 | {
      | ^
f.cc:13:4: error: expected unqualified-id before ‘.’ token
   13 |   c. // DOT
      |    ^
f.cc:15:1: error: expected declaration before ‘}’ token
   15 | };