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* [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
@ 2007-08-29 20:07 radford at blackbean dot org
2007-08-29 21:19 ` [Bug c/33238] " radford at blackbean dot org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: radford at blackbean dot org @ 2007-08-29 20:07 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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The following code gives an internal compiler error using gcc 4.1.2, but
compiles using 3.4. Remove the ()s around the {}s and it compiles just fine.
void reverse(void *_p, int nmemb, int size)
{
struct { char _[size]; } *p = _p, tmp;
for (int i=nmemb-1, j=0; j<nmemb/2; i--, j++)
({ tmp = p[i]; p[i] = p[j]; p[j] = tmp; });
}
bug2.c: In function reverse:
bug2.c:4: internal compiler error: in tree_low_cst, at tree.c:4502
--
Summary: [4.1.2 regression] ICE on statement expression using
variable-sized structure in tree_low_cst, at tree.c:4502
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: radford at blackbean dot org
GCC build triplet: x86_64-redhat-linux, i386-redhat-linux
GCC host triplet: x86_64-redhat-linux, i386-redhat-linux
GCC target triplet: x86_64-redhat-linux, i386-redhat-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
@ 2007-08-29 21:19 ` radford at blackbean dot org
2007-08-30 10:06 ` [Bug c/33238] [4.1/4.2/4.3 Regression] " rguenth at gcc dot gnu dot org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: radford at blackbean dot org @ 2007-08-29 21:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from radford at blackbean dot org 2007-08-29 21:19 -------
Bug is present in 4.2.1 as well.
--
radford at blackbean dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.1.2 regression] ICE on |[4.1.2 regression] ICE on
|statement expression using |statement expression using
|variable-sized structure in |variable-sized structure in
|tree_low_cst, at tree.c:4502|tree_low_cst, at tree.c:4502
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1/4.2/4.3 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
2007-08-29 21:19 ` [Bug c/33238] " radford at blackbean dot org
@ 2007-08-30 10:06 ` rguenth at gcc dot gnu dot org
2007-09-05 1:10 ` mmitchel at gcc dot gnu dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2007-08-30 10:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2007-08-30 10:06 -------
4.1 ICEs during expansion of stack vars while 4.2 and 4.3 ICE in
force_constant_size, at gimplify.c:718.
4.1 backtrace:
#1 0x0000000000808124 in tree_low_cst (t=0x2ad57f2a61c0, pos=1)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree.c:4399
#2 0x000000000082c662 in expand_one_stack_var (var=0x2ad57f7a9840)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/cfgexpand.c:583
#3 0x000000000082c9ce in expand_one_var (var=0x2ad57f7a9840,
toplevel=1 '\001')
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/cfgexpand.c:737
#4 0x000000000082cfd2 in expand_used_vars ()
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/cfgexpand.c:992
#5 0x000000000082ebd7 in tree_expand_cfg ()
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/cfgexpand.c:1593
trunk backtrace:
#1 0x000000000070bcbc in force_constant_size (var=0x2ac3445f1420)
at /space/rguenther/src/svn/pointer_plus/gcc/gimplify.c:718
#2 0x000000000070bfc4 in gimple_add_tmp_var (tmp=0x2ac3445f1420)
at /space/rguenther/src/svn/pointer_plus/gcc/gimplify.c:735
#3 0x0000000000726a78 in gimplify_target_expr (expr_p=0x2ac344f3a1d0,
pre_p=0x7fff665d2fc8, post_p=0x7fff665d2fc0)
at /space/rguenther/src/svn/pointer_plus/gcc/gimplify.c:4377
#4 0x00000000007311a3 in gimplify_expr (expr_p=0x2ac344f3a1d0,
pre_p=0x7fff665d2fc8, post_p=0x7fff665d2fc0,
gimple_test_f=0x8b6bc3 <is_gimple_stmt>, fallback=fb_none)
at /space/rguenther/src/svn/pointer_plus/gcc/gimplify.c:5876
#5 0x000000000072702d in gimplify_stmt (stmt_p=0x2ac344f3a1d0)
at /space/rguenther/src/svn/pointer_plus/gcc/gimplify.c:4425
--
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
Keywords| |ice-on-valid-code
Known to fail| |4.0.0 4.1.2 4.2.1 4.3.0
Known to work| |3.4.6
Last reconfirmed|0000-00-00 00:00:00 |2007-08-30 10:06:47
date| |
Summary|[4.2.1 regression] ICE on |[4.1/4.2/4.3 Regression] ICE
|statement expression using |on statement expression
|variable-sized structure in |using variable-sized
|tree_low_cst, at tree.c:4502|structure in tree_low_cst,
| |at tree.c:4502
Target Milestone|--- |4.1.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1/4.2/4.3 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
2007-08-29 21:19 ` [Bug c/33238] " radford at blackbean dot org
2007-08-30 10:06 ` [Bug c/33238] [4.1/4.2/4.3 Regression] " rguenth at gcc dot gnu dot org
@ 2007-09-05 1:10 ` mmitchel at gcc dot gnu dot org
2007-09-19 11:21 ` jakub at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2007-09-05 1:10 UTC (permalink / raw)
To: gcc-bugs
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1/4.2/4.3 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
` (2 preceding siblings ...)
2007-09-05 1:10 ` mmitchel at gcc dot gnu dot org
@ 2007-09-19 11:21 ` jakub at gcc dot gnu dot org
2007-09-20 21:20 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-09-19 11:21 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2007-
| |09/msg01531.html
Status|NEW |ASSIGNED
Last reconfirmed|2007-08-30 10:06:47 |2007-09-19 11:21:43
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1/4.2/4.3 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
` (3 preceding siblings ...)
2007-09-19 11:21 ` jakub at gcc dot gnu dot org
@ 2007-09-20 21:20 ` jakub at gcc dot gnu dot org
2007-09-21 9:50 ` [Bug c/33238] [4.1/4.2 " jakub at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-09-20 21:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2007-09-20 21:19 -------
Subject: Bug 33238
Author: jakub
Date: Thu Sep 20 21:19:36 2007
New Revision: 128629
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128629
Log:
PR c/33238
PR c/27301
* gimplify.c (gimplify_vla_decl): New function.
(gimplify_decl_expr): Move VLA decl handling to gimplify_vla_decl.
Call it.
(gimplify_target_expr): Handle variable length TARGET_EXPRs.
* gcc.c-torture/execute/20070919-1.c: New test.
* gcc.dg/pr33238.c: New test.
* gcc.dg/pr27301.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/20070919-1.c
trunk/gcc/testsuite/gcc.dg/pr27301.c
trunk/gcc/testsuite/gcc.dg/pr33238.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.1/4.2 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
` (4 preceding siblings ...)
2007-09-20 21:20 ` jakub at gcc dot gnu dot org
@ 2007-09-21 9:50 ` jakub at gcc dot gnu dot org
2008-07-04 22:16 ` [Bug c/33238] [4.2 " jsm28 at gcc dot gnu dot org
2009-03-30 22:17 ` jsm28 at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-09-21 9:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2007-09-21 09:50 -------
Fixed so far for 4.3.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|4.0.0 4.1.2 4.2.1 4.3.0 |4.0.0 4.1.2 4.2.1
Known to work|3.4.6 |3.4.6 4.3.0
Summary|[4.1/4.2/4.3 Regression] ICE|[4.1/4.2 Regression] ICE on
|on statement expression |statement expression using
|using variable-sized |variable-sized structure in
|structure in tree_low_cst, |tree_low_cst, at tree.c:4502
|at tree.c:4502 |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.2 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
` (5 preceding siblings ...)
2007-09-21 9:50 ` [Bug c/33238] [4.1/4.2 " jakub at gcc dot gnu dot org
@ 2008-07-04 22:16 ` jsm28 at gcc dot gnu dot org
2009-03-30 22:17 ` jsm28 at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2008-07-04 22:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jsm28 at gcc dot gnu dot org 2008-07-04 22:16 -------
Closing 4.1 branch.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.1/4.2 Regression] ICE on |[4.2 Regression] ICE on
|statement expression using |statement expression using
|variable-sized structure in |variable-sized structure in
|tree_low_cst, at tree.c:4502|tree_low_cst, at tree.c:4502
Target Milestone|4.1.3 |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c/33238] [4.2 Regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502
2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
` (6 preceding siblings ...)
2008-07-04 22:16 ` [Bug c/33238] [4.2 " jsm28 at gcc dot gnu dot org
@ 2009-03-30 22:17 ` jsm28 at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2009-03-30 22:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from jsm28 at gcc dot gnu dot org 2009-03-30 22:17 -------
Closing 4.2 branch, fixed in 4.3.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to fail|4.0.0 4.1.2 4.2.1 |4.0.0 4.1.2 4.2.1 4.2.5
Resolution| |FIXED
Target Milestone|4.2.5 |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33238
^ permalink raw reply [flat|nested] 9+ messages in thread
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2007-08-29 20:07 [Bug c/33238] New: [4.1.2 regression] ICE on statement expression using variable-sized structure in tree_low_cst, at tree.c:4502 radford at blackbean dot org
2007-08-29 21:19 ` [Bug c/33238] " radford at blackbean dot org
2007-08-30 10:06 ` [Bug c/33238] [4.1/4.2/4.3 Regression] " rguenth at gcc dot gnu dot org
2007-09-05 1:10 ` mmitchel at gcc dot gnu dot org
2007-09-19 11:21 ` jakub at gcc dot gnu dot org
2007-09-20 21:20 ` jakub at gcc dot gnu dot org
2007-09-21 9:50 ` [Bug c/33238] [4.1/4.2 " jakub at gcc dot gnu dot org
2008-07-04 22:16 ` [Bug c/33238] [4.2 " jsm28 at gcc dot gnu dot org
2009-03-30 22:17 ` jsm28 at gcc dot gnu dot org
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