[Bug c/49067] New: Internal Compiler Error with -O3

[Bug c/49067] New: Internal Compiler Error with -O3

[asalina at snet dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

           Summary: Internal Compiler Error with -O3
           Product: gcc
           Version: 4.5.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: asalina@snet.net


Created attachment 24292
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24292
Pre=processed .i file

GCC aborts with internal compiler error when optimization is set to -O3.
Setting optimization to -O2 prevents the problem.

Pre-processed .i file attached.

System type: Ubuntu 11.04

Entire command line (via Makefile) that triggers the error:

cd /home/fcf/blender-svn/cmake/source/blender/editors/space_view3d &&
/usr/bin/gcc  -D__SSE__ -D__MMX__ -D__SSE2__ -DWITH_GAMEENGINE -DGLEW_STATIC
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fopenmp 
-msse2  -msse -pipe -fPIC -funsigned-char -fno-strict-aliasing  -Wall
-Wcast-align -Werror=declaration-after-statement
-Werror=implicit-function-declaration -Werror=return-type -Wstrict-prototypes
-Wno-char-subscripts -Wno-unknown-pragmas -Wpointer-arith -Wunused-parameter
-Wwrite-strings -O3 -DNDEBUG -DNDEBUG
-I/home/fcf/blender-svn/blender/source/blender/editors/include
-I/home/fcf/blender-svn/blender/source/blender/blenfont
-I/home/fcf/blender-svn/blender/source/blender/blenkernel
-I/home/fcf/blender-svn/blender/source/blender/blenloader
-I/home/fcf/blender-svn/blender/source/blender/blenlib
-I/home/fcf/blender-svn/blender/source/blender/gpu
-I/home/fcf/blender-svn/blender/source/blender/imbuf
-I/home/fcf/blender-svn/blender/source/blender/makesdna
-I/home/fcf/blender-svn/blender/source/blender/makesrna
-I/home/fcf/blender-svn/blender/source/blender/windowmanager
-I/home/fcf/blender-svn/blender/source/blender/render/extern/include
-I/home/fcf/blender-svn/blender/intern/guardedalloc
-I/home/fcf/blender-svn/blender/intern/smoke/extern
-I/home/fcf/blender-svn/blender/extern/glew/include
-I/home/fcf/blender-svn/blender/source/gameengine/BlenderRoutines   -save-temps
-o CMakeFiles/bf_editor_space_view3d.dir/view3d_select.c.o   -c
/home/fcf/blender-svn/blender/source/blender/editors/space_view3d/view3d_select.c


Output of "gcc -v"

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.5.2-8ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.5 --enable-shared --enable-multiarch
--with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib/x86_64-linux-gnu
--enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-plugin --enable-gold --enable-ld=default
--with-plugin-ld=ld.gold --enable-objc-gc --disable-werror --with-arch-32=i686
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)

[Bug c/49067] Internal Compiler Error with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.5.2
      Known to fail|                            |4.5.3

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-20 09:56:39 UTC ---
I can confirm

> /space/rguenther/install/gcc-4.5.3/bin/gcc -O3 -fno-strict-aliasing -S t.i
/home/fcf/blender-svn/blender/source/blender/editors/space_view3d/view3d_select.c:
In function 'view3d_circle_select_exec':
/home/fcf/blender-svn/blender/source/blender/editors/space_view3d/view3d_select.c:2235:12:
internal compiler error: in get_constraint_for_component_ref, at
tree-ssa-structalias.c:3035
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

which is a regression from 4.5.2.  So I suppose Ubuntu has backported
some patches.

Reducing.

[Bug tree-optimization/49067] [4.5 Regression] Internal Compiler Error with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.05.20 10:18:43
          Component|c                           |tree-optimization
            Version|4.5.2                       |4.5.3
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.5.4
            Summary|Internal Compiler Error     |[4.5 Regression] Internal
                   |with -O3                    |Compiler Error with -O3
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-20 10:18:43 UTC ---
static inline int
armature_circle_doSelectJoint(void *userData)
{
  struct {
      void *vc;
      short select;
      int mval[2];
      float radius;
  } *data = userData;
  return (0 <= data->radius && data->select);
}
int
armature_circle_select(void)
{
  struct {
      void *vc;
      short select, mval[2];
      float radius;
  } data;
  return armature_circle_doSelectJoint(&data);
}

it's caused by the mismatch of the local struct declarations (might be a bug
in your app as well).

[Bug c/49067] [4.5 Regression] Internal Compiler Error with -O3

[asalina at snet dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

asalina at snet dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |c
            Version|4.5.3                       |4.5.2

--- Comment #3 from asalina at snet dot net 2011-05-20 18:28:02 UTC ---
(In reply to comment #2)

> it's caused by the mismatch of the local struct declarations (might be a bug
> in your app as well).

Thanks. I'll consult with the app maintainers on this.

[Bug tree-optimization/49067] [4.5 Regression] Internal Compiler Error with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
          Component|c                           |tree-optimization

[Bug tree-optimization/49067] [4.5 Regression] Internal Compiler Error with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49067

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.5.4                       |4.6.0

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-02 10:43:56 UTC ---
Fixed in 4.6.0, the 4.5 branch is being closed.