[Bug tree-optimization/15979] New: [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[Bug tree-optimization/15979] New: [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[belyshev at lubercy dot com]

-------------------------------------------------------------------------------
void x_handle_selection_request (int a, int b, int c)
{
  int i;
 
  if (a)
    {
      if (b)
	{
	  i = c;
	  
	  foo (i + 0xDEADBEEF);
	}
    }
  else
    {
      i = 0;
    }
  
  bar (i + 0xDEADBEEF);
}
-------------------------------------------------------------------------------
Starting program: /usr/local/src/gcc/head/build/gcc/cc1
/home/ssb/bugs/pending/xselect1.i -quiet -O1 -o /dev/null

Program received signal SIGSEGV, Segmentation fault.
0x080fdac6 in insert_aux (block=0x405179f8) at ../../gcc/gcc/tree-ssa-pre.c:1329
1329                              tree type = TREE_TYPE
(avail[block->pred->src->index]);
(gdb) where
#0  0x080fdac6 in insert_aux (block=0x405179f8) at ../../gcc/gcc/tree-ssa-pre.c:1329
#1  0x080fe9bb in insert_aux (block=0x405177b4) at ../../gcc/gcc/tree-ssa-pre.c:1495
#2  0x080fe9bb in insert_aux (block=0x405175e4) at ../../gcc/gcc/tree-ssa-pre.c:1495
#3  0x080fea22 in insert () at ../../gcc/gcc/tree-ssa-pre.c:1517
#4  0x08100c02 in execute_pre () at ../../gcc/gcc/tree-ssa-pre.c:1848
#5  0x080cef4f in execute_one_pass (pass=0x84e19c0) at
../../gcc/gcc/tree-optimize.c:406
#6  0x080cefd6 in execute_pass_list (pass=0x84e19c0) at
../../gcc/gcc/tree-optimize.c:435
#7  0x080cefe9 in execute_pass_list (pass=0x84e16c0) at
../../gcc/gcc/tree-optimize.c:436
#8  0x080cf216 in tree_rest_of_compilation (fndecl=0x40510e0c, nested_p=0 '\0')
    at ../../gcc/gcc/tree-optimize.c:530
#9  0x08065d5f in c_expand_body (fndecl=0x40510e0c) at ../../gcc/gcc/c-decl.c:6374
#10 0x083d04c5 in cgraph_expand_function (node=0x4051732c) at
../../gcc/gcc/cgraphunit.c:794
#11 0x083cf672 in cgraph_assemble_pending_functions () at
../../gcc/gcc/cgraphunit.c:295
#12 0x083cf78e in cgraph_finalize_function (decl=0x40510e0c, nested=0 '\0')
    at ../../gcc/gcc/cgraphunit.c:376
#13 0x080656d3 in c_finalize (fndecl=0x40510e0c) at ../../gcc/gcc/c-decl.c:6223
#14 0x08065cce in finish_function () at ../../gcc/gcc/c-decl.c:6346
#15 0x0804a639 in yyparse () at c-parse.y:373
#16 0x08052902 in c_parse_file () at c-parse.y:3040
#17 0x0809a13b in c_common_parse_file (set_yydebug=0) at ../../gcc/gcc/c-opts.c:1240
#18 0x0837ab4e in compile_file () at ../../gcc/gcc/toplev.c:1666
#19 0x0837c2c8 in do_compile () at ../../gcc/gcc/toplev.c:2712
#20 0x0837c324 in toplev_main (argc=0, argv=0xbffff934) at
../../gcc/gcc/toplev.c:2744
#21 0x080b1a70 in main (argc=0, argv=0x0) at ../../gcc/gcc/main.c:35

-- 
           Summary: [3.5 Regression] ICE, segfault in insert_aux at tree-
                    ssa-pre.c:1329
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: dberlin at gcc dot gnu dot org
        ReportedBy: belyshev at lubercy dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[belyshev at lubercy dot com]

------- Additional Comments From belyshev at lubercy dot com  2004-06-13 19:36 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-06-13 19:36:50
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-13 21:07 -------
Serge, does this patch <http://gcc.gnu.org/ml/gcc-patches/2004-06/msg00881.html> fix the 
problem?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[belyshev at lubercy dot com]

------- Additional Comments From belyshev at lubercy dot com  2004-06-13 21:18 -------
No, it does not.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.5.0                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[belyshev at lubercy dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-14 00:24 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-06/msg00948.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-14 01:28 -------
Subject: Bug 15979

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dberlin@gcc.gnu.org	2004-06-14 01:27:57

Modified files:
	gcc            : ChangeLog tree-ssa-pre.c 

Log message:
	2004-06-13  Daniel Berlin  <dberlin@dberlin.org>
	
	Fix PR tree-optimization/15979
	Fix PR tree-optimization/15981
	* tree-ssa-pre.c (insert_aux): Fix faulty logic so that we don't
	try to insert values undefined along some path.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3950&r2=2.3951
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.8&r2=2.9



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979

[Bug tree-optimization/15979] [3.5 Regression] ICE, segfault in insert_aux at tree-ssa-pre.c:1329

[dberlin at gcc dot gnu dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2004-06-14 01:49 -------
Fixed

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15979