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* [Bug c/51371] New: compilation should produce warning
@ 2011-12-01  2:58 gideon425.gb5 at mailnull dot com
  2011-12-01  3:01 ` [Bug c/51371] " pinskia at gcc dot gnu.org
  2011-12-02 12:21 ` rguenth at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: gideon425.gb5 at mailnull dot com @ 2011-12-01  2:58 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51371

             Bug #: 51371
           Summary: compilation should produce warning
    Classification: Unclassified
           Product: gcc
           Version: 4.6.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gideon425.gb5@mailnull.com


unsigned long l;
unsigned long l2;

void x()
{
  if (l >= 0) l2 = 1;
}


compiling the above code with -Wlogical-op should give a warning
as l can never be negative


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug c/51371] compilation should produce warning
  2011-12-01  2:58 [Bug c/51371] New: compilation should produce warning gideon425.gb5 at mailnull dot com
@ 2011-12-01  3:01 ` pinskia at gcc dot gnu.org
  2011-12-02 12:21 ` rguenth at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2011-12-01  3:01 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51371

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-12-01 03:00:47 UTC ---
t12.c:6:3: warning: comparison of unsigned expression >= 0 is always true
[-Wtype-limits]


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug c/51371] compilation should produce warning
  2011-12-01  2:58 [Bug c/51371] New: compilation should produce warning gideon425.gb5 at mailnull dot com
  2011-12-01  3:01 ` [Bug c/51371] " pinskia at gcc dot gnu.org
@ 2011-12-02 12:21 ` rguenth at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-12-02 12:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51371

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-02 12:21:05 UTC ---
>= is not a logical op.


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-12-02 12:21 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2011-12-01  2:58 [Bug c/51371] New: compilation should produce warning gideon425.gb5 at mailnull dot com
2011-12-01  3:01 ` [Bug c/51371] " pinskia at gcc dot gnu.org
2011-12-02 12:21 ` rguenth at gcc dot gnu.org

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