[Bug c++/83797] New: Inconsistent error messages for main

[denis.campredon at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83797

            Bug ID: 83797
           Summary: Inconsistent error messages for main
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: denis.campredon at gmail dot com
  Target Milestone: ---

In the following snippet:
-------------
inline static constexpr short main() {
}
-------------
1 : <source>:1:36: error: cannot declare '::main' to be inline
 inline static constexpr short main() {
                                    ^
1 : <source>:1:36: error: cannot declare '::main' to be 'constexpr'
1 : <source>:1:36: error: cannot declare '::main' to be static
1 : <source>:1:36: error: '::main' must return 'int'
-------------

'int' and 'constexpr' are quoted whereas 'inline' and 'static' are not.



In this one 'main' is not preceded by '::' whereas in all the previous warnings
it is.
------------
main()  {}
------------
1 : <source>:1:6: warning: ISO C++ forbids declaration of 'main' with no type
[-Wreturn-type]
 main(){}
      ^
------------