[Bug c++/68262] New: Ill-formed function pointer declaration acts as multi-line comment until ;

["yaghmour.shafik at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68262

            Bug ID: 68262
           Summary: Ill-formed function pointer declaration acts as
                    multi-line comment until ;
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: yaghmour.shafik at gmail dot com
  Target Milestone: ---

Given the following code:

#include <iostream>

int main()
{
   void (*) {}
    We could go on and on
        line after line
        and no errors?  
    ;
    std::cout << "hello\n" ;
}

live example here http://melpon.org/wandbox/permlink/iWzF2dKUBxZ3NOMn

What looks like an ill-formed function pointer declaration does not generate a
diagnostic and allows complete none sense until a ; is reached. 

After that the compiler seems to go on as if nothing odd has happened. 

This seems to go back as far as 4.4.7 and version 4.3.6 does not seem to have
this bug.