[Bug c/30551] New: -pedantic does not include -Wmain, but -pedantic-errors does make -Wmain cause error messages

["truedfx at gentoo dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Noticed while doing a test for bug #26494:

int main(char a) {}

gcc bug.c -ansi -pedantic
compiles this without any error or warning.

gcc bug.c -ansi -pedantic -Wmain
reports
bug.c:1: warning: first argument of ‘main’ should be
‘int’
bug.c:1: warning: ‘main’ takes only zero or two arguments
and compiles this.

gcc bug.c -ansi -pedantic-errors
compiles this without any error or warning.

gcc bug.c -ansi -pedantic-errors -Wmain
reports
bug.c:1: error: first argument of ‘main’ should be
‘int’
bug.c:1: error: ‘main’ takes only zero or two arguments
and does not compile this.

gcc --version:
gcc (GCC) 4.1.1 (Gentoo 4.1.1-r3)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


-- 
           Summary: -pedantic does not include -Wmain, but -pedantic-errors
                    does make -Wmain cause error messages
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: truedfx at gentoo dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30551