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* [Bug c/27120]  New: Should warn about uninitialized use of variable array element
@ 2006-04-11 15:56 rguenth at gcc dot gnu dot org
  2006-04-11 17:30 ` [Bug c/27120] " pinskia at gcc dot gnu dot org
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-04-11 15:56 UTC (permalink / raw)
  To: gcc-bugs

int foo(int i)
{
  char buffer[10];
  return buffer[i];
}

does not warn about the use of uninitialized array buffer.  While

int foo(int i)
{
  char buffer[10];
  return buffer[2];
}

does.  Likewise for C++.


-- 
           Summary: Should warn about uninitialized use of variable array
                    element
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org
OtherBugsDependingO 24639
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27120


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c/27120] Should warn about uninitialized use of variable array element
  2006-04-11 15:56 [Bug c/27120] New: Should warn about uninitialized use of variable array element rguenth at gcc dot gnu dot org
@ 2006-04-11 17:30 ` pinskia at gcc dot gnu dot org
  2006-04-30  7:47 ` pinskia at gcc dot gnu dot org
  2009-03-28 13:40 ` fxcoudert at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-04-11 17:30 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from pinskia at gcc dot gnu dot org  2006-04-11 17:30 -------
Related to PR 10138.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |10138


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27120


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c/27120] Should warn about uninitialized use of variable array element
  2006-04-11 15:56 [Bug c/27120] New: Should warn about uninitialized use of variable array element rguenth at gcc dot gnu dot org
  2006-04-11 17:30 ` [Bug c/27120] " pinskia at gcc dot gnu dot org
@ 2006-04-30  7:47 ` pinskia at gcc dot gnu dot org
  2009-03-28 13:40 ` fxcoudert at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-04-30  7:47 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from pinskia at gcc dot gnu dot org  2006-04-30 07:47 -------
(In reply to comment #0)
[first testcase using nonconstant index]
> 
> does not warn about the use of uninitialized array buffer.  While
> 
[second testcase using constant index]
> 
> does.  Likewise for C++.

In the second example, SRA works on the array, scalarizes the array which
allows for the current initialization warning to happen.  Now maybe we should
do the uninitialization  warning in the front-end.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-04-30 07:47:20
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27120


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c/27120] Should warn about uninitialized use of variable array element
  2006-04-11 15:56 [Bug c/27120] New: Should warn about uninitialized use of variable array element rguenth at gcc dot gnu dot org
  2006-04-11 17:30 ` [Bug c/27120] " pinskia at gcc dot gnu dot org
  2006-04-30  7:47 ` pinskia at gcc dot gnu dot org
@ 2009-03-28 13:40 ` fxcoudert at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2009-03-28 13:40 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from fxcoudert at gcc dot gnu dot org  2009-03-28 13:39 -------
*** Bug 35234 has been marked as a duplicate of this bug. ***


-- 

fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dominiq at lps dot ens dot
                   |                            |fr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27120


^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-03-28 13:40 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-04-11 15:56 [Bug c/27120] New: Should warn about uninitialized use of variable array element rguenth at gcc dot gnu dot org
2006-04-11 17:30 ` [Bug c/27120] " pinskia at gcc dot gnu dot org
2006-04-30  7:47 ` pinskia at gcc dot gnu dot org
2009-03-28 13:40 ` fxcoudert at gcc dot gnu dot org

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