[Bug c++/26179] New: ICE while compiling mozilla in tree-ssa-pre.c

[Bug c++/26179] New: ICE while compiling mozilla in tree-ssa-pre.c

[ahaas at airmail dot net]

Hi.

As of February 6, my GCC build has an ICE when building CVS mozilla code.
The output of compiling the file with '-v -save-temps' is below. The
preprocessed file will be submitted once this messages gets into bugzilla.

Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: /home/arth/gcc/configure --prefix=/opt/gnu --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-languages=c,c++,objc
--disable-checking --with-system-zlib --with-gc=page
Thread model: posix
gcc version 4.2.0 20060208 (experimental)
/opt/gnu/libexec/gcc/i686-pc-linux-gnu/4.2.0/cc1plus -E -quiet -v
-I../../dist/include/system_wrappers -I/home/arth/mozilla/layout/generic
-I/home/arth/mozilla/layout/generic/../base
-I/home/arth/mozilla/layout/generic/../tables
-I/home/arth/mozilla/layout/generic/../xul/base/src
-I/home/arth/mozilla/layout/generic/../../content/xul/content/src
-I/home/arth/mozilla/layout/generic/../../content/base/src
-I/home/arth/mozilla/layout/generic/../../content/html/content/src
-I../../dist/include/xpcom -I../../dist/include/string -I../../dist/include/dom
-I../../dist/include/content -I../../dist/include/gfx
-I../../dist/include/widget -I../../dist/include/locale
-I../../dist/include/view -I../../dist/include/necko -I../../dist/include/js
-I../../dist/include/caps -I../../dist/include/pref
-I../../dist/include/htmlparser -I../../dist/include/webshell
-I../../dist/include/plugin -I../../dist/include/docshell
-I../../dist/include/uriloader -I../../dist/include/mimetype
-I../../dist/include/webbrwsr -I../../dist/include/oji
-I../../dist/include/unicharutil -I../../dist/include/lwbrk
-I../../dist/include/imglib2 -I../../dist/include/accessibility
-I../../dist/include/xpconnect -I../../dist/include/java
-I../../dist/include/exthandler -I../../dist/include/intl
-I../../dist/include/uconv -I../../dist/include -I../../dist/include/layout
-I../../dist/include/nspr -I../../dist/sdk/include -D_GNU_SOURCE -D_REENTRANT
-DMOZILLA_INTERNAL_API -DOSTYPE="Linux2.6.15-1" -DOSARCH="Linux"
-DBUILD_ID=2006020810 -D_IMPL_NS_LAYOUT -DNDEBUG -DTRIMMED -DMOZILLA_CLIENT
-include /home/arth/mozilla/config/gcc_hidden.h -include ../../mozilla-config.h
-MD .deps/nsTextFrame.pp /home/arth/mozilla/layout/generic/nsTextFrame.cpp
-march=pentium3 -Wall -Wconversion -Wpointer-arith -Wcast-align
-Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor
-Wno-long-long -pedantic -fPIC -fno-rtti -fno-exceptions -fno-check-new
-fshort-wchar -ffunction-sections -O2 -fpch-preprocess -o
nsTextFrame.iiignoring nonexistent directory
"/opt/gnu/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 ../../dist/include/system_wrappers
 /home/arth/mozilla/layout/generic
 /home/arth/mozilla/layout/generic/../base
 /home/arth/mozilla/layout/generic/../tables
 /home/arth/mozilla/layout/generic/../xul/base/src
 /home/arth/mozilla/layout/generic/../../content/xul/content/src
 /home/arth/mozilla/layout/generic/../../content/base/src
 /home/arth/mozilla/layout/generic/../../content/html/content/src
../../dist/include/xpcom
 ../../dist/include/string
 ../../dist/include/dom
 ../../dist/include/content
 ../../dist/include/gfx
 ../../dist/include/widget
 ../../dist/include/locale
 ../../dist/include/view
 ../../dist/include/necko
 ../../dist/include/js
 ../../dist/include/caps
 ../../dist/include/pref
 ../../dist/include/htmlparser
 ../../dist/include/webshell
 ../../dist/include/plugin
 ../../dist/include/docshell
 ../../dist/include/uriloader
 ../../dist/include/mimetype
 ../../dist/include/webbrwsr
 ../../dist/include/oji
 ../../dist/include/unicharutil
 ../../dist/include/lwbrk
 ../../dist/include/imglib2
 ../../dist/include/accessibility
 ../../dist/include/xpconnect
 ../../dist/include/java
 ../../dist/include/exthandler
 ../../dist/include/intl
 ../../dist/include/uconv
 ../../dist/include
 ../../dist/include/layout
 ../../dist/include/nspr
 ../../dist/sdk/include
/opt/gnu/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0

/opt/gnu/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/i686-pc-linux-gnu

/opt/gnu/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/backward
/usr/local/include
 /opt/gnu/include
 /opt/gnu/lib/gcc/i686-pc-linux-gnu/4.2.0/include
 /usr/include
End of search list.
 /opt/gnu/libexec/gcc/i686-pc-linux-gnu/4.2.0/cc1plus -fpreprocessed
nsTextFrame.ii -quiet -dumpbase nsTextFrame.cpp -march=pentium3 -auxbase-strip
nsTextFrame.o -O2 -Wall -Wconversion -Wpointer-arith -Wcast-align
-Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor
-Wno-long-long -pedantic -version -fPIC -fno-rtti -fno-exceptions
-fno-check-new -fshort-wchar -ffunction-sections -o nsTextFrame.s
GNU C++ version 4.2.0 20060208 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 4.2.0 20060208 (experimental).
GGC heuristics: --param ggc-min-expand=46 --param ggc-min-heapsize=31772
Compiler executable checksum: d7474398a8dcc6bc2280de373ea5e626
{ ... mozilla code warnings ... }
/home/arth/mozilla/layout/generic/nsTextFrame.cpp:6291: internal compiler
error: in create_component_ref_by_pieces, at tree-ssa-pre.c:2167
Please submit a full bug report,
with preprocessed source if appropriate.


-- 
           Summary: ICE while compiling mozilla in tree-ssa-pre.c
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ahaas at airmail dot net
  GCC host triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug c++/26179] ICE while compiling mozilla in tree-ssa-pre.c

[ahaas at airmail dot net]

------- Comment #1 from ahaas at airmail dot net  2006-02-08 21:01 -------
Created an attachment (id=10804)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10804&action=view)
Pre-processed output of file inducing ICE

Attaching pre-processed output. File compressed with bzip2 due to size.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dberlin at gcc dot gnu dot
                   |                            |org
          Component|c++                         |tree-optimization
           Keywords|                            |ice-on-valid-code
            Summary|ICE while compiling mozilla |[4.2 Regression] ICE while
                   |in tree-ssa-pre.c           |compiling mozilla in tree-
                   |                            |ssa-pre.c
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-02-08 23:16 -------
I bet it is RETURN_DECL which is the problem but checking for sure now.
If it is I will apply the obvious patch with a testcase.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-02-08 23:23 -------
Reduced testcase for the RETURN_DECL issue (I still have to figure out if this
is the same issue):
struct a
{
  int i;
};
void h(struct a&);
void l(void);

struct a g(void)
{
  struct a fl;
  h(fl);
  if (fl.i)
    l();
  fl.i+=2;
  return fl;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-02-08 23:31 -------
Yes it is the same issue. 
(gdb) p debug_tree(genop)
 <result_decl 0x2aaaae498be0 addedDimensions


Fixing


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-08 23:31:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-02-09 14:31 -------
Subject: Bug 26179

Author: pinskia
Date: Thu Feb  9 14:31:28 2006
New Revision: 110801

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110801
Log:
2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/26179
        * g++.dg/opt/pr26179.C: New test.
2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/26179
        * tree-ssa-pre.c (create_component_ref_by_pieces):
        Handle RETURN_DECL like VAR_DECL.


Added:
    trunk/gcc/testsuite/g++.dg/opt/pr26179.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-02-09 14:32 -------
Fixed.  Thanks for your report.


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179

[Bug tree-optimization/26179] [4.2 Regression] ICE while compiling mozilla in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2006-02-10 13:40 -------
*** Bug 26212 has been marked as a duplicate of this bug. ***


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26179