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* [Bug middle-end/18005] New: ICE in fold-const.c/fold
@ 2004-10-15  5:26 aj at gcc dot gnu dot org
  2004-10-15  5:27 ` [Bug middle-end/18005] " aj at gcc dot gnu dot org
                   ` (9 more replies)
  0 siblings, 10 replies; 11+ messages in thread
From: aj at gcc dot gnu dot org @ 2004-10-15  5:26 UTC (permalink / raw)
  To: gcc-bugs

I get now an ICE compiling glibc.  The error is in 20041014 but also in 
20041013 and has been introduced during the last 5 days or so (or glibc 
has changed in a way to trigger this). 
 
aj@gromit:/cvs/libc/stdlib> /opt/gcc/4.0-devel/libexec/gcc/x86_64-suse-linux-gnu/4.0.0/cc1-fpreprocessed 
tst-random.i -quiet -dumpbase tst-random.c -mtune=k8 
-auxbase-strip /builds/glibc/4.0/stdlib/tst-random.o -O2  -std=gnu99 -version 
-o tst-random.s 
GNU C version 4.0.0 20041014 (experimental) (x86_64-suse-linux-gnu) 
        compiled by GNU C version 4.0.0 20041014 (experimental). 
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 
tst-random.i: In function 'main': 
tst-random.i:2738: internal compiler error: Segmentation fault 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions. 
 
Running under gdb shows: 
(gdb) r -fpreprocessed tst-random.i -quiet -dumpbase tst-random.c -mtune=k8 
-auxbase-strip/builds/glibc/4.0/stdlib/tst-random.o -O2  -std=gnu99 -version -o 
tst-random.s 
GNU C version 4.0.0 20041014 (experimental) (x86_64-suse-linux-gnu) 
        compiled by GNU C version 4.0.0 20041014 (experimental). 
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 
 
Program received signal SIGSEGV, Segmentation fault. 
0x00000000005b1b94 in fold (expr=0x2a95b67a50) 
at /cvs/gcc/gcc/fold-const.c:6051 
6051                STRIP_NOPS (op); 
(gdb) bt 
#0  0x00000000005b1b94 in fold (expr=0x2a95b67a50) 
at /cvs/gcc/gcc/fold-const.c:6051 
#1  0x00000000005cb832 in extract_muldiv (t=Variable "t" is not available. 
) at /cvs/gcc/gcc/fold-const.c:5313 
#2  0x00000000005b4655 in fold (expr=0x2a95b67a00) 
at /cvs/gcc/gcc/fold-const.c:7571 
#3  0x00000000007bb9d6 in analyze_array_indexes (loop=0xb79850, 
access_fns=0xb78268, ref=Variable "ref" is not available. 
) 
    at /cvs/gcc/gcc/tree-data-ref.c:519 
#4  0x00000000007becdd in analyze_array (stmt=0x2a95b01d20, ref=0x2a95afabd0, 
    is_read=0 '\0') at /cvs/gcc/gcc/tree-data-ref.c:596 
#5  0x00000000007bf069 in find_data_references_in_loop (loop=0xb79710, 
    datarefs=0x7fbfffe860) at /cvs/gcc/gcc/tree-data-ref.c:2236 
#6  0x00000000004d70b6 in estimate_numbers_of_iterations (loops=0xb56d00) 
    at /cvs/gcc/gcc/tree-ssa-loop-niter.c:1005 
#7  0x00000000004d5615 in tree_ssa_loop_bounds () 
at /cvs/gcc/gcc/tree-ssa-loop.c:308 
#8  0x000000000047ca9d in execute_pass_list (pass=0xa8be60) 
    at /cvs/gcc/gcc/tree-optimize.c:503 
#9  0x000000000047cb29 in execute_pass_list (pass=0xa8c100) 
    at /cvs/gcc/gcc/tree-optimize.c:539 
#10 0x000000000047cb29 in execute_pass_list (pass=0xa87540) 
    at /cvs/gcc/gcc/tree-optimize.c:539 
#11 0x000000000047cd6f in tree_rest_of_compilation (fndecl=0x2a95aff380) 
    at /cvs/gcc/gcc/tree-optimize.c:633 
#12 0x000000000041a10b in c_expand_body (fndecl=0x2a95aff380) 
    at /cvs/gcc/gcc/c-decl.c:6370 
#13 0x00000000007ae32e in cgraph_expand_function (node=0x2a95b100e0) 
    at /cvs/gcc/gcc/cgraphunit.c:1046 
#14 0x00000000007b1c14 in cgraph_optimize () at /cvs/gcc/gcc/cgraphunit.c:2728 
#15 0x000000000075bb55 in toplev_main (argc=Variable "argc" is not available. 
) at /cvs/gcc/gcc/toplev.c:999 
#16 0x0000002a9568900d in __libc_start_main () from /lib64/tls/libc.so.6 
#17 0x00000000004023ca in _start () at start.S:113 
(gdb) p expr 
$1 = 0x2a95b67a50 
(gdb) pge 
(bit_size_type) iD.3284_20 * 1 
(gdb) p op 
$2 = 0x2a95af53c0 
(gdb) pt op 
 <nop_expr 0x2a95af53c0 
    type <integer_type 0x2a95896460 bit_size_type public unsigned sizetype TI 
        size <integer_cst 0x2a958a7150 constant invariant 128> 
        unit size <integer_cst 0x2a958a7180 constant invariant 16> 
        align 128 symtab 0 alias set -1 precision 68 min <integer_cst 
0x2a958a7900 0> max <integer_cst 0x2a958a7930 0xfffffffffffffffff>> 
    readonly 
    arg 0 <ssa_name 0x2a95b26780 nothrow var <var_decl 0x2a95b021c0 i> def_stmt 
<ssa_name 0x2a95b26730> 
        version 20 in-free-list>>

-- 
           Summary: ICE in fold-const.c/fold
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: aj at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-linux-gnu
  GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] ICE in fold-const.c/fold
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
@ 2004-10-15  5:27 ` aj at gcc dot gnu dot org
  2004-10-15 12:55 ` [Bug middle-end/18005] [4.0 Regression] " pinskia at gcc dot gnu dot org
                   ` (8 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: aj at gcc dot gnu dot org @ 2004-10-15  5:27 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From aj at gcc dot gnu dot org  2004-10-15 05:27 -------
Created an attachment (id=7355)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7355&action=view)
Preprocessed source file


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE in fold-const.c/fold
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
  2004-10-15  5:27 ` [Bug middle-end/18005] " aj at gcc dot gnu dot org
@ 2004-10-15 12:55 ` pinskia at gcc dot gnu dot org
  2004-10-15 13:26 ` pinskia at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-15 12:55 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-15 12:55 -------
The SSA_NAME lost its type (again).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|ICE in fold-const.c/fold    |[4.0 Regression] ICE in
                   |                            |fold-const.c/fold
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE in fold-const.c/fold
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
  2004-10-15  5:27 ` [Bug middle-end/18005] " aj at gcc dot gnu dot org
  2004-10-15 12:55 ` [Bug middle-end/18005] [4.0 Regression] " pinskia at gcc dot gnu dot org
@ 2004-10-15 13:26 ` pinskia at gcc dot gnu dot org
  2004-10-16 15:37 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop reichelt at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-15 13:26 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-15 13:25 -------
Confirmed, reduced to:
extern int printf (__const char *__restrict __format, ...);
const int nseq = 3;
const int nrnd = 50;
void fail () __attribute__ ((__noreturn__));
long random();

int
main (void)
{
  long int rnd[3][nrnd];
  char* state[nseq];
  int s;
  int i;
  
  for (i = 0; i < nrnd; ++i)
    for (s = 0; s < nseq; ++s)
      if (rnd[s][i] != random ())
	fail ();
  
  return 0;
}


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dberlin at gcc dot gnu dot
                   |                            |org, spop at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-15 13:26:01
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (2 preceding siblings ...)
  2004-10-15 13:26 ` pinskia at gcc dot gnu dot org
@ 2004-10-16 15:37 ` reichelt at gcc dot gnu dot org
  2004-10-18 22:55 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA pinskia at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2004-10-16 15:37 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From reichelt at gcc dot gnu dot org  2004-10-16 15:37 -------
Here's an even shorter example. Just compile with "-O".

============================================
const int n = 2;

void foo()
{
    int a[1][n], i;

    for (i=0; i<2; ++i)
        if (a[0][i]) return;
}
============================================

Sebastian, the problem appeared with your patch
http://gcc.gnu.org/ml/gcc-cvs/2004-10/msg00852.html

Could you please have a look?


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
  GCC build triplet|x86_64-linux-gnu            |
   GCC host triplet|x86_64-linux-gnu            |
 GCC target triplet|x86_64-linux-gnu            |
           Keywords|                            |monitored
            Summary|[4.0 Regression] ICE in     |[4.0 Regression] ICE with
                   |fold-const.c/fold           |simple loop


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (3 preceding siblings ...)
  2004-10-16 15:37 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop reichelt at gcc dot gnu dot org
@ 2004-10-18 22:55 ` pinskia at gcc dot gnu dot org
  2004-10-19  4:14 ` pinskia at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-18 22:55 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-18 22:55 -------
It really has nothing to do with that patch we are losing the TYPE_SIZE of the VLA, why?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (4 preceding siblings ...)
  2004-10-18 22:55 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA pinskia at gcc dot gnu dot org
@ 2004-10-19  4:14 ` pinskia at gcc dot gnu dot org
  2004-10-19 10:03 ` sebastian dot pop at cri dot ensmp dot fr
                   ` (3 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-19  4:14 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-19 04:14 -------
*** Bug 18052 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |phython at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (5 preceding siblings ...)
  2004-10-19  4:14 ` pinskia at gcc dot gnu dot org
@ 2004-10-19 10:03 ` sebastian dot pop at cri dot ensmp dot fr
  2004-10-31 17:37 ` phython at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: sebastian dot pop at cri dot ensmp dot fr @ 2004-10-19 10:03 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From sebastian dot pop at cri dot ensmp dot fr  2004-10-19 10:03 -------
Subject: Re:  [4.0 Regression] ICE with simple loop with VLA

Patch is here:

http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01592.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (6 preceding siblings ...)
  2004-10-19 10:03 ` sebastian dot pop at cri dot ensmp dot fr
@ 2004-10-31 17:37 ` phython at gcc dot gnu dot org
  2004-11-12  0:13 ` cvs-commit at gcc dot gnu dot org
  2004-11-12  1:08 ` pinskia at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: phython at gcc dot gnu dot org @ 2004-10-31 17:37 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From phython at gcc dot gnu dot org  2004-10-31 17:37 -------
*** Bug 18253 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |atmosfear at users dot
                   |                            |sourceforge dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (7 preceding siblings ...)
  2004-10-31 17:37 ` phython at gcc dot gnu dot org
@ 2004-11-12  0:13 ` cvs-commit at gcc dot gnu dot org
  2004-11-12  1:08 ` pinskia at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-11-12  0:13 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-11-12 00:13 -------
Subject: Bug 18005

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	spop@gcc.gnu.org	2004-11-12 00:13:07

Modified files:
	gcc            : ChangeLog tree-data-ref.c 

Log message:
	* tree-data-ref.c (analyze_subscript_affine_affine): Correctly
	compute the first overlapping iterations.
	
	PR middle-end/18005
	* tree-data-ref.c (estimate_niter_from_size_of_data): Ensure
	that arguments of EXACT_DIV_EXPR are INTEGER_CST.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6291&r2=2.6292
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-data-ref.c.diff?cvsroot=gcc&r1=2.16&r2=2.17



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA
  2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
                   ` (8 preceding siblings ...)
  2004-11-12  0:13 ` cvs-commit at gcc dot gnu dot org
@ 2004-11-12  1:08 ` pinskia at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-11-12  1:08 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-12 01:08 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005


^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2004-11-12  1:08 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-10-15  5:26 [Bug middle-end/18005] New: ICE in fold-const.c/fold aj at gcc dot gnu dot org
2004-10-15  5:27 ` [Bug middle-end/18005] " aj at gcc dot gnu dot org
2004-10-15 12:55 ` [Bug middle-end/18005] [4.0 Regression] " pinskia at gcc dot gnu dot org
2004-10-15 13:26 ` pinskia at gcc dot gnu dot org
2004-10-16 15:37 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop reichelt at gcc dot gnu dot org
2004-10-18 22:55 ` [Bug middle-end/18005] [4.0 Regression] ICE with simple loop with VLA pinskia at gcc dot gnu dot org
2004-10-19  4:14 ` pinskia at gcc dot gnu dot org
2004-10-19 10:03 ` sebastian dot pop at cri dot ensmp dot fr
2004-10-31 17:37 ` phython at gcc dot gnu dot org
2004-11-12  0:13 ` cvs-commit at gcc dot gnu dot org
2004-11-12  1:08 ` pinskia at gcc dot gnu dot org

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