* [Bug tree-optimization/31345] [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
@ 2007-03-25 10:28 ` tbm at cyrius dot com
2007-03-25 11:38 ` rguenth at gcc dot gnu dot org
` (6 subsequent siblings)
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From: tbm at cyrius dot com @ 2007-03-25 10:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from tbm at cyrius dot com 2007-03-25 12:28 -------
Created an attachment (id=13282)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13282&action=view)
preprocessed source
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
2007-03-25 10:28 ` [Bug tree-optimization/31345] " tbm at cyrius dot com
@ 2007-03-25 11:38 ` rguenth at gcc dot gnu dot org
2007-03-25 16:41 ` [Bug tree-optimization/31345] [4.3 Regression] ICE " pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
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From: rguenth at gcc dot gnu dot org @ 2007-03-25 11:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2007-03-25 13:37 -------
Confirmed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-03-25 12:37:51
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
2007-03-25 10:28 ` [Bug tree-optimization/31345] " tbm at cyrius dot com
2007-03-25 11:38 ` rguenth at gcc dot gnu dot org
@ 2007-03-25 16:41 ` pinskia at gcc dot gnu dot org
2007-03-26 16:57 ` ian at airs dot com
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-03-25 16:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2007-03-25 18:41 -------
I think this is a regression also on the 4.2 branch now since the set of
patches that caused this is also there.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Severity|normal |blocker
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
` (2 preceding siblings ...)
2007-03-25 16:41 ` [Bug tree-optimization/31345] [4.3 Regression] ICE " pinskia at gcc dot gnu dot org
@ 2007-03-26 16:57 ` ian at airs dot com
2007-03-26 17:27 ` ian at airs dot com
` (3 subsequent siblings)
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From: ian at airs dot com @ 2007-03-26 16:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from ian at airs dot com 2007-03-26 17:57 -------
I'm continuing to look into the best way to avoid the compiler crash. I want
to note that this code is being clobbered by undefined signed overflow.
Computing (19780211 + [-128,127]) * 43321879 is always going to overflow, so
VRP is converting that into hash = INT_MAX. That is almost certainly not what
is intended. This is independent of my -Wstrict-overflow work, although my
-Wstrict-overflow work is indeed causing the compiler crash.
--
ian at airs dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |ian at airs dot com
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2007-03-25 12:37:51 |2007-03-26 17:57:02
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
` (3 preceding siblings ...)
2007-03-26 16:57 ` ian at airs dot com
@ 2007-03-26 17:27 ` ian at airs dot com
2007-03-26 21:44 ` ian at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ian at airs dot com @ 2007-03-26 17:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from ian at airs dot com 2007-03-26 18:27 -------
I'm testing this patch.
Index: tree-vrp.c
===================================================================
--- tree-vrp.c (revision 123218)
+++ tree-vrp.c (working copy)
@@ -1982,10 +1982,18 @@ extract_range_from_binary_expr (value_ra
return;
}
+ /* We punt if:
+ 1) [-INF, +INF]
+ 2) [-INF, +-INF(OVF)]
+ 3) [+-INF(OVF), +INF]
+ 4) [+-INF(OVF), +-INF(OVF)]
+ We learn nothing when we have INF and INF(OVF) on both sides.
+ Note that we do accept [-INF, -INF] and [+INF, +INF] without
+ overflow. */
if ((min == TYPE_MIN_VALUE (TREE_TYPE (min))
- || is_negative_overflow_infinity (min))
+ || is_overflow_infinity (min))
&& (max == TYPE_MAX_VALUE (TREE_TYPE (max))
- || is_positive_overflow_infinity (max)))
+ || is_overflow_infinity (max)))
{
set_value_range_to_varying (vr);
return;
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
` (4 preceding siblings ...)
2007-03-26 17:27 ` ian at airs dot com
@ 2007-03-26 21:44 ` ian at gcc dot gnu dot org
2007-03-27 5:47 ` ian at gcc dot gnu dot org
2007-03-27 5:57 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: ian at gcc dot gnu dot org @ 2007-03-26 21:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from ian at gcc dot gnu dot org 2007-03-26 22:43 -------
Subject: Bug 31345
Author: ian
Date: Mon Mar 26 22:43:30 2007
New Revision: 123237
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123237
Log:
./:
PR tree-optimization/31345
* tree-vrp.c (extract_range_from_binary_expr): Turn ranges like
[+INF, +INF(OVF)] into VARYING.
testsuite/:
PR tree-optimization/31345
* gcc.c-torture/compile/pr31345-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr31345-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
` (5 preceding siblings ...)
2007-03-26 21:44 ` ian at gcc dot gnu dot org
@ 2007-03-27 5:47 ` ian at gcc dot gnu dot org
2007-03-27 5:57 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: ian at gcc dot gnu dot org @ 2007-03-27 5:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from ian at gcc dot gnu dot org 2007-03-27 06:47 -------
Subject: Bug 31345
Author: ian
Date: Tue Mar 27 06:46:56 2007
New Revision: 123254
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123254
Log:
./:
PR tree-optimization/31345
* tree-vrp.c (extract_range_from_binary_expr): Turn ranges like
[+INF, +INF(OVF)] into VARYING.
testsuite/:
PR tree-optimization/31345
* gcc.c-torture/compile/pr31345-1.c: New test.
Added:
branches/gcc-4_2-branch/gcc/testsuite/gcc.c-torture/compile/pr31345-1.c
Modified:
branches/gcc-4_2-branch/gcc/ChangeLog
branches/gcc-4_2-branch/gcc/testsuite/ChangeLog
branches/gcc-4_2-branch/gcc/tree-vrp.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/31345] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:269
2007-03-25 10:24 [Bug tree-optimization/31345] New: [4.3 Regression] ICE in in set_value_range, at tree-vrp.c:269 tbm at cyrius dot com
` (6 preceding siblings ...)
2007-03-27 5:47 ` ian at gcc dot gnu dot org
@ 2007-03-27 5:57 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: ian at airs dot com @ 2007-03-27 5:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from ian at airs dot com 2007-03-27 06:56 -------
Fixed on mainline and 4.2 branch.
--
ian at airs dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|4.3.0 |4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31345
^ permalink raw reply [flat|nested] 9+ messages in thread