[Bug bootstrap/49584] New: [4.4.7 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[Bug bootstrap/49584] New: [4.4.7 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49584

           Summary: [4.4.7 regression] bootstrap failure on m68k-linux:
                    segfault compiling _muldi3
           Product: gcc
           Version: 4.4.7
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


gcc-4.4-20110628 fails to bootstrap on m68k-linux:

Checking multilib configuration for libgcc...
make[3]: Entering directory
`/mnt/scratch/objdir44/m68k-unknown-linux-gnu/libgcc'
# If this is the top-level multilib, build all the other
# multilibs.
/mnt/scratch/objdir44/./gcc/xgcc -B/mnt/scratch/objdir44/./gcc/
-B/mnt/scratch/install44/m68k-unknown-linux-gnu/bin/
-B/mnt/scratch/install44/m68k-unknown-linux-gnu/lib/ -isystem
/mnt/scratch/install44/m68k-unknown-linux-gnu/include -isystem
/mnt/scratch/install44/m68k-unknown-linux-gnu/sys-include -g -O2 -O2  -g -O2
-DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-Wcast-qual -Wold-style-definition  -isystem ./include  -fPIC -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED   -I. -I.
-I../.././gcc -I/mnt/scratch/gcc-4.4-20110621/libgcc
-I/mnt/scratch/gcc-4.4-20110621/libgcc/.
-I/mnt/scratch/gcc-4.4-20110621/libgcc/../gcc
-I/mnt/scratch/gcc-4.4-20110621/libgcc/../include  -DHAVE_CC_TLS -o _muldi3.o
-MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c
/mnt/scratch/gcc-4.4-20110621/libgcc/../gcc/libgcc2.c \
          -fvisibility=hidden -DHIDE_EXPORTS
In file included from /mnt/scratch/gcc-4.4-20110621/libgcc/../gcc/tsystem.h:44,
                 from /mnt/scratch/gcc-4.4-20110621/libgcc/../gcc/libgcc2.c:29:
/mnt/scratch/objdir44/./gcc/include/stddef.h:149: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [_muldi3.o] Error 1
make[3]: Leaving directory
`/mnt/scratch/objdir44/m68k-unknown-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/mnt/scratch/objdir44'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir44'
make: *** [all] Error 2

The previous weekly snapshot, 4.4-20110621, bootstrapped fine.

I wasn't able to reproduce the error with 4.4-20110628 is built as a cross
hosted on i686-linux, so I suspect a miscompilation in stage2 or stage3.

I'll try a new bootstrap with r175603 reverted.

[Bug bootstrap/49584] [4.4.7 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49584

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.06.29 19:20:15
                 CC|                            |ebotcazou at gcc dot
                   |                            |gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-29 19:20:15 UTC ---
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> make[3]: *** [_muldi3.o] Error 1
> make[3]: Leaving directory
> `/mnt/scratch/objdir44/m68k-unknown-linux-gnu/libgcc'
> make[2]: *** [all-stage1-target-libgcc] Error 2
> make[2]: Leaving directory `/mnt/scratch/objdir44'
> make[1]: *** [stage1-bubble] Error 2
> make[1]: Leaving directory `/mnt/scratch/objdir44'
> make: *** [all] Error 2
> 
> The previous weekly snapshot, 4.4-20110621, bootstrapped fine.
> 
> I wasn't able to reproduce the error with 4.4-20110628 is built as a cross
> hosted on i686-linux, so I suspect a miscompilation in stage2 or stage3.

This is stage 1 though.

> I'll try a new bootstrap with r175603 reverted.

How do you build the stage 1 compiler?  With optimization enabled?

[Bug bootstrap/49584] [4.4.7 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49584

--- Comment #2 from Mikael Pettersson <mikpe at it dot uu.se> 2011-06-29 19:52:35 UTC ---
(In reply to comment #1)
> This is stage 1 though.

Hmm, strange.

> > I'll try a new bootstrap with r175603 reverted.
> 
> How do you build the stage 1 compiler?  With optimization enabled?

Just 'make bootstrap' with no other options.

I just noticed a possible mistake in my previous bootstrap attempt; I'll redo
everything from scratch and post an update tomorrow.

[Bug bootstrap/49584] [4.4 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49584

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.4.7
            Summary|[4.4.7 regression]          |[4.4 regression] bootstrap
                   |bootstrap failure on        |failure on m68k-linux:
                   |m68k-linux: segfault        |segfault compiling _muldi3
                   |compiling _muldi3           |

[Bug bootstrap/49584] [4.4 regression] bootstrap failure on m68k-linux: segfault compiling _muldi3

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49584

Mikael Pettersson <mikpe at it dot uu.se> changed:

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

--- Comment #3 from Mikael Pettersson <mikpe at it dot uu.se> 2011-06-30 19:08:44 UTC ---
A bootstrap from scratch with a clean objdir succeeded.  Sorry about the noise.