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* [Bug c/53129] New: Wself-assign
@ 2012-04-26 18:08 manu at gcc dot gnu.org
  2012-04-26 18:13 ` [Bug c/53129] Wself-assign manu at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: manu at gcc dot gnu.org @ 2012-04-26 18:08 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53129

             Bug #: 53129
           Summary: Wself-assign
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: manu@gcc.gnu.org


void func()
{
  int i = 2;
  int x = 0;   /* warn */
  float f = 5.0;
  double a[3];

  i = i + 0;   /* not warn */
  f = f / 1;   /* not warn */
  a[1] = a[1]; /* warn */
  i += 0;      /* not warn */
  x = x;      /* warn */
}

manuel@gcc12:~$ clang -fsyntax-only -Wself-assign wselfassign.c
wselfassign.c:12:5: warning: explicitly assigning a variable of type 'int' to
itself [-Wself-assign]
  x = x;      /* warn */
  ~ ^ ~
1 warning generated.

An implementation was submitted to GCC but never approved here:

http://gcc.gnu.org/ml/gcc-patches/2010-06/msg02390.html


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug c/53129] Wself-assign
  2012-04-26 18:08 [Bug c/53129] New: Wself-assign manu at gcc dot gnu.org
@ 2012-04-26 18:13 ` manu at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: manu at gcc dot gnu.org @ 2012-04-26 18:13 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53129

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
                 CC|                            |lcwu at gcc dot gnu.org

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-04-26 18:12:52 UTC ---
Hi Le-Chun, I still think GCC wants this warning. Are you planning to submit a
new patch in the near future?


^ permalink raw reply	[flat|nested] 2+ messages in thread
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