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* [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP
@ 2005-09-19 5:41 steven at gcc dot gnu dot org
2005-09-19 5:52 ` [Bug tree-optimization/23960] " pinskia at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: steven at gcc dot gnu dot org @ 2005-09-19 5:41 UTC (permalink / raw)
To: gcc-bugs
typedef long unsigned int size_t;
size_t __attribute__((noinline))
choose_block (char *d, size_t dlen, int col,
size_t *wlen)
{
size_t n, nn;
n = dlen;
for (;;)
{
((void) ((d + n > d) ? 0 : (__assert_fail ("d + n > d", "rfc2047.c", 346,
__PRETTY_FUNCTION__), 0)));
if (!nn && (col + *wlen <= 75 + 1 || n <= 1))
break;
}
return n;
}
--> compile with -O2
t.c: In function ?choose_block?:
t.c:6: internal compiler error: in compare_values, at tree-vrp.c:415
Breakpoint 1, fancy_abort (file=0xbd5846 "../../mainline/gcc/tree-vrp.c",
line=415,
function=0xbd58b6 "compare_values") at diagnostic.c:590
590 internal_error ("in %s, at %s:%d", function, trim_filename (file),
line);
(gdb) up
#1 0x000000000094c645 in compare_values (val1=0x2a95a5a000,
val2=0x2a95a4fe70) at tree-vrp.c:414
414 gcc_assert (POINTER_TYPE_P (TREE_TYPE (val1))
(gdb) l
409 if (val1 == val2)
410 return 0;
411
412 /* Below we rely on the fact that VAL1 and VAL2 are both pointers or
413 both integers. */
414 gcc_assert (POINTER_TYPE_P (TREE_TYPE (val1))
415 == POINTER_TYPE_P (TREE_TYPE (val2)));
416
417 /* Do some limited symbolic comparisons. */
418 if (!POINTER_TYPE_P (TREE_TYPE (val1)))
(gdb) p debug_tree_cfg (0)
choose_block (d, dlen, col, wlen)
{
static const char __PRETTY_FUNCTION__[13] = "choose_block";
size_t nn;
size_t n;
size_t D.1627;
_Bool D.1626;
_Bool D.1625;
_Bool D.1624;
size_t D.1623;
size_t D.1622;
size_t D.1621;
int iftmp.0;
# BLOCK 0
# PRED: ENTRY (fallthru,exec)
n_2 = dlen_1;
goto <bb 7> (<L10>);
# SUCC: 7 (fallthru,exec)
# BLOCK 1
# PRED: 3 (false,exec) 4 (false,exec)
<L0>:;
# SUCC: 7 [100.0%] (fallthru,exec)
# BLOCK 7
# PRED: 1 [100.0%] (fallthru,exec) 0 (fallthru,exec)
<L10>:;
if (dlen_1 == 0B) goto <L1>; else goto <L9>;
# SUCC: 2 (true,exec) 6 (false,exec)
# BLOCK 6
# PRED: 7 (false,exec)
<L9>:;
dlen_14 = ASSERT_EXPR <dlen_1, dlen_1 != 0B>;
goto <bb 3> (<L3>);
# SUCC: 3 [100.0%] (fallthru,exec)
# BLOCK 2
# PRED: 7 (true,exec)
<L1>:;
__assert_fail (&"d + n > d"[0], &"rfc2047.c"[0], 346, &__PRETTY_FUNCTION__);
# SUCC: 3 (fallthru,exec)
# BLOCK 3
# PRED: 2 (fallthru,exec) 6 [100.0%] (fallthru,exec)
<L3>:;
if (nn_3 == 0) goto <L4>; else goto <L0>;
# SUCC: 4 (true,exec) 1 (false,exec)
# BLOCK 4
# PRED: 3 (true,exec)
<L4>:;
D.1621_5 = (size_t) col_4;
D.1622_7 = *wlen_6;
D.1623_8 = D.1621_5 + D.1622_7;
D.1624_9 = D.1623_8 <= 76;
D.1625_10 = dlen_1 <= 1;
D.1626_11 = D.1624_9 || D.1625_10;
if (D.1626_11) goto <L7>; else goto <L0>;
# SUCC: 5 (true,exec) 1 (false,exec)
# BLOCK 5
# PRED: 4 (true,exec)
<L7>:;
n_12 = dlen_1;
return dlen_1;
# SUCC: EXIT
}
$1 = void
(gdb) p debug_generic_expr (val1)
dlenD.1609_1
$2 = void
(gdb) p debug_generic_expr (val2)
0B
(gdb)
This bug shows up when building mutt.
--
Summary: [4.1 regression] ICE in compare_values in VRP
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: steven at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
@ 2005-09-19 5:52 ` pinskia at gcc dot gnu dot org
2005-09-19 5:58 ` [Bug middle-end/23960] " pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-19 5:52 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-19 05:52 -------
Redcued testcase:
void choose_block (char *d, __SIZE_TYPE__ n)
{
if (!(d + n > d))
__builtin_abort ();
}
With the comparision patch from 22368, we get:
t.c:5: error: types mismatch in comparsion
long unsigned intD.4
charD.1 *
nD.1270 == 0B;
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
OtherBugsDependingO| |22368
nThis| |
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-09-19 05:52:48
date| |
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
2005-09-19 5:52 ` [Bug tree-optimization/23960] " pinskia at gcc dot gnu dot org
@ 2005-09-19 5:58 ` pinskia at gcc dot gnu dot org
2005-09-19 17:45 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-19 5:58 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-19 05:58 -------
The bug is in fold-const.c.
In fold_binary around line 9288 where we don't convert the expressions.
--
What |Removed |Added
----------------------------------------------------------------------------
Component|tree-optimization |middle-end
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
2005-09-19 5:52 ` [Bug tree-optimization/23960] " pinskia at gcc dot gnu dot org
2005-09-19 5:58 ` [Bug middle-end/23960] " pinskia at gcc dot gnu dot org
@ 2005-09-19 17:45 ` pinskia at gcc dot gnu dot org
2005-09-23 1:52 ` kazu at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-19 17:45 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |23968
nThis| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
` (2 preceding siblings ...)
2005-09-19 17:45 ` pinskia at gcc dot gnu dot org
@ 2005-09-23 1:52 ` kazu at gcc dot gnu dot org
2005-09-26 1:29 ` kazu at gcc dot gnu dot org
2005-09-26 1:29 ` cvs-commit at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: kazu at gcc dot gnu dot org @ 2005-09-23 1:52 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |kazu at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
` (4 preceding siblings ...)
2005-09-26 1:29 ` kazu at gcc dot gnu dot org
@ 2005-09-26 1:29 ` cvs-commit at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-09-26 1:29 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-09-26 01:29 -------
Subject: Bug 23960
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: kazu@gcc.gnu.org 2005-09-26 01:28:51
Modified files:
gcc : ChangeLog fold-const.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.c-torture/compile: pr23960.c
Log message:
gcc/
PR tree-optimization/23960
* fold-const.c (fold_binary): Use op0 and op1 instead of arg0
and arg1 if we are passing them to fold_build2.
gcc/testsuite/
PR tree-optimization/23960
* gcc.c-torture/compile/pr23960.c: New.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.10019&r2=2.10020
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.625&r2=1.626
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.6101&r2=1.6102
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/pr23960.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/23960] [4.1 regression] ICE in compare_values in VRP
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
` (3 preceding siblings ...)
2005-09-23 1:52 ` kazu at gcc dot gnu dot org
@ 2005-09-26 1:29 ` kazu at gcc dot gnu dot org
2005-09-26 1:29 ` cvs-commit at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: kazu at gcc dot gnu dot org @ 2005-09-26 1:29 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From kazu at gcc dot gnu dot org 2005-09-26 01:29 -------
Just checked in a patch.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23960
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2005-09-26 1:29 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-09-19 5:41 [Bug tree-optimization/23960] New: [4.1 regression] ICE in compare_values in VRP steven at gcc dot gnu dot org
2005-09-19 5:52 ` [Bug tree-optimization/23960] " pinskia at gcc dot gnu dot org
2005-09-19 5:58 ` [Bug middle-end/23960] " pinskia at gcc dot gnu dot org
2005-09-19 17:45 ` pinskia at gcc dot gnu dot org
2005-09-23 1:52 ` kazu at gcc dot gnu dot org
2005-09-26 1:29 ` kazu at gcc dot gnu dot org
2005-09-26 1:29 ` cvs-commit at gcc dot gnu dot org
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