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* [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function
[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
@ 2005-11-26 7:39 ` gdr at gcc dot gnu dot org
2005-11-26 16:53 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: gdr at gcc dot gnu dot org @ 2005-11-26 7:39 UTC (permalink / raw)
To: gcc-bugs
--
gdr 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 |2005-11-26 07:39:55
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function
[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
2005-11-26 7:39 ` [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function gdr at gcc dot gnu dot org
@ 2005-11-26 16:53 ` pinskia at gcc dot gnu dot org
2006-08-26 3:52 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-11-26 16:53 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2005-11-26 16:52 -------
k1=k2=0;
e1=e2=0;
for(;;)
{
if (!e1) if(k1<1111)
{
set n1
if (n1 <0)
{
....
break;
}
}
if (!e2) if(k2<1111)
{
set n2
if (n2 <0)
{
....
break;
}
}
}
...
if (n1 < 0 || n2 < 0)
return 1;
L1:
return 2;
------
The problem is that "n1 < 0 || n2 < 0" is being executed in one bb and not
conditionaly
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function
[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
2005-11-26 7:39 ` [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function gdr at gcc dot gnu dot org
2005-11-26 16:53 ` pinskia at gcc dot gnu dot org
@ 2006-08-26 3:52 ` pinskia at gcc dot gnu dot org
2008-08-20 11:33 ` manu at gcc dot gnu dot org
2009-02-09 15:56 ` [Bug middle-end/21733] bogus uninitialized warning (huge testcase) manu at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-08-26 3:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2006-08-26 03:52 -------
This is not a target specific bug either.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet|powerpc-linux |
GCC host triplet|powerpc-linux |
GCC target triplet|powerpc-linux |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function
[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2006-08-26 3:52 ` pinskia at gcc dot gnu dot org
@ 2008-08-20 11:33 ` manu at gcc dot gnu dot org
2009-02-09 15:56 ` [Bug middle-end/21733] bogus uninitialized warning (huge testcase) manu at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-08-20 11:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from manu at gcc dot gnu dot org 2008-08-20 11:32 -------
There is some connection with PR 36296 but perhaps they are not exactly the
same issue.
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manu at gcc dot gnu dot org
BugsThisDependsOn| |36296
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] bogus uninitialized warning (huge testcase)
[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2008-08-20 11:33 ` manu at gcc dot gnu dot org
@ 2009-02-09 15:56 ` manu at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: manu at gcc dot gnu dot org @ 2009-02-09 15:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from manu at gcc dot gnu dot org 2009-02-09 15:56 -------
This testcase is too big to see clearly what is going on. A reduced testcase
would be appreciated (preferably with just 1 function).
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2005-11-26 07:39:55 |2009-02-09 15:56:21
date| |
Summary|filecmp.c:252: warning: #n1#|bogus uninitialized warning
|may be used uninitialized in|(huge testcase)
|this function |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] bogus uninitialized warning (huge testcase)
[not found] <bug-21733-4@http.gcc.gnu.org/bugzilla/>
2013-11-20 0:49 ` law at redhat dot com
@ 2013-11-20 0:55 ` law at redhat dot com
1 sibling, 0 replies; 7+ messages in thread
From: law at redhat dot com @ 2013-11-20 0:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
Bug 21733 depends on bug 36296, which changed state.
Bug 36296 Summary: bogus uninitialized warning (loop representation, VRP missed-optimization)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36296
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WORKSFORME
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/21733] bogus uninitialized warning (huge testcase)
[not found] <bug-21733-4@http.gcc.gnu.org/bugzilla/>
@ 2013-11-20 0:49 ` law at redhat dot com
2013-11-20 0:55 ` law at redhat dot com
1 sibling, 0 replies; 7+ messages in thread
From: law at redhat dot com @ 2013-11-20 0:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21733
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |law at redhat dot com
Resolution|--- |WORKSFORME
Known to fail| |
--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
Trunk seems to handle this just fine now.
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-11-20 0:55 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-21733-1216@http.gcc.gnu.org/bugzilla/>
2005-11-26 7:39 ` [Bug middle-end/21733] filecmp.c:252: warning: #n1# may be used uninitialized in this function gdr at gcc dot gnu dot org
2005-11-26 16:53 ` pinskia at gcc dot gnu dot org
2006-08-26 3:52 ` pinskia at gcc dot gnu dot org
2008-08-20 11:33 ` manu at gcc dot gnu dot org
2009-02-09 15:56 ` [Bug middle-end/21733] bogus uninitialized warning (huge testcase) manu at gcc dot gnu dot org
[not found] <bug-21733-4@http.gcc.gnu.org/bugzilla/>
2013-11-20 0:49 ` law at redhat dot com
2013-11-20 0:55 ` law at redhat dot com
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