c/6198: reaching end of main() should cause return with 0

[jsm28@gcc.gnu.org]

Synopsis: reaching end of main() should cause return with 0

State-Changed-From-To: open->closed
State-Changed-By: jsm28
State-Changed-When: Fri Apr  5 23:16:27 2002
State-Changed-Why:
    GCC does this in C99 mode.  If you are using the
    compilation command defined by the Single Unix
    Specification, c99, it should pass an appropriate -std
    option to gcc (it's at present for distributors to
    provide such a script, GCC doesn't itself); other
    compilation commands are not in that specification.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6198