c/7651: Define -W strictly in terms of other warning flags

[ac131313@redhat.com]

>Number:         7651
>Category:       c
>Synopsis:       Define -W strictly in terms of other warning flags
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 20 07:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     ac131313@redhat.com
>Release:        unknown-1.0
>Organization:
>Environment:

>Description:
Assuming I'm reading the current manual correctly, the
-W option is a combination of the following existing
options:

  o  -Wreturn-type

  o  -Wsign-compare

  o  -Wmissing-braces

And also:

  o  An automatic variable can be clobered by a setjmp/longjmp.

  o  An expression statement has no side effects.

  o  ``static'' doesn't come first.

  o  (x<=y ? 1 : 0) <= z} vs {x<=y<=z}

  o  A function returning ``const''.

  o  Missing initalizers for an aggregate.

  o  The -Wunused side effect.

Suggest defining -W strictly in terms of other -W options.
More -W options would need to be added.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: