[Bug bootstrap/46018] New: Bootstrap fails on i386-pc-solaris2.10

[Bug bootstrap/46018] New: Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

           Summary: Bootstrap fails on i386-pc-solaris2.10
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ahaas@airmail.net


As stated in the summary, the bootstrap build fails when compiling lto-lang.o:

/export/home/arth/gnu/gcc-1014/./prev-gcc/xgcc
-B/export/home/arth/gnu/gcc-1014/./prev-gcc/
-B/export/home/arth/local/i386-pc-solaris2.10/bin/
-B/export/home/arth/local/i386-pc-solaris2.10/bin/
-B/export/home/arth/local/i386-pc-solaris2.10/lib/ -isystem
/export/home/arth/local/i386-pc-solaris2.10/include -isystem
/export/home/arth/local/i386-pc-solaris2.10/sys-include    -c   -O2  -gtoggle
-DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat   -DHAVE_CONFIG_H -I. -Ilto -I/home/ahaas/gnu/gcc.git/gcc
-I/home/ahaas/gnu/gcc.git/gcc/lto -I/home/ahaas/gnu/gcc.git/gcc/../include
-I/home/ahaas/gnu/gcc.git/gcc/../libcpp/include
-I/export/home/arth/local/include -I/export/home/arth/local/include 
-I/home/ahaas/gnu/gcc.git/gcc/../libdecnumber
-I/home/ahaas/gnu/gcc.git/gcc/../libdecnumber/dpd -I../libdecnumber  
-I/usr/include/libelf -I/export/home/arth/local/include
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c -o lto/lto-lang.o
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c: In function 'lto_type_for_mode':
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c:951:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2out.c:1881
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [lto/lto-lang.o] Error 1

The error itself is a gcc_assert() in dwarf2out.c:

gcc_assert (REGNO (XEXP (src, 0)) == cfa.reg)

Using 'git bisect' I was able to identify the revision which introduced the
failure:

4899856f3f2fdefaffa0d5355d8dae034da9ec26 is the first bad commit
commit 4899856f3f2fdefaffa0d5355d8dae034da9ec26
Author: bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu Sep 23 10:04:33 2010 +0000

        PR rtl-optimization/44374
        * basic-block.h (enum bb_flags): Add BB_MODIFIED.
        * df-core.c (df_set_bb_dirty): Set it.
        * ifcvt.c (find_memory): Remove function.
        (dead_or_predicable): Use can_move_insns_across.
        * df.h (can_move_insns_across): Declare function.
        * cfgcleanup.c (block_was_dirty): New static variable.
        (try_crossjump_bb, try_forward_edges): Test BB_MODIFIED flag rather
        than df_get_bb_dirty.
        (try_head_merge_bb): New static function.
        (try_optimize_cfg): Call it.  Call df_analyze if block_was_dirty
        is set.
        * df-problems.c: Include "target.h"
        (df_simulate_find_uses): New static function.
        (MEMREF_NORMAL, MEMREF_VOLATILE): New macros.
        (find_memory, find_memory_store): New static functions.
        (can_move_insns_across): New function.
        * Makefile.in (df-problems.o): Update dependencies.

    testsuite/
        PR rtl-optimization/44374
        * gcc.target/arm/headmerge-1.c: New test.
        * gcc.target/arm/headmerge-2.c: New test.
        * gcc.target/i386/headmerge-1.c: New test.
        * gcc.target/i386/headmerge-2.c: New test.


    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@164552
138bc75d-0d04-0410-961f-82ee72b054a4

:040000 040000 8eba3de7802f571601cb7092cfd546609f24086f
c8b21579e48331ae0fa528fb89a228ea94211691 M      gcc

My last successful build was on Sep. 22:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/export/home/arth/local/libexec/gcc/i386-pc-solaris2.10/4.6.0/lto-wrapper
Target: i386-pc-solaris2.10
Configured with: /home/ahaas/gnu/gcc.git/configure
--prefix=/export/home/arth/local --enable-languages=c,c++,objc,fortran
--disable-nls --with-gmp=/export/home/arth/local
--with-mpfr=/export/home/arth/local --enable-checking=release
--enable-threads=posix --with-gnu-as --with-as=/export/home/arth/local/bin/as
--with-gnu-ld --with-ld=/export/home/arth/local/bin/ld
--enable-libstdcxx-pch=no --enable-objc-gc --build=i386-pc-solaris2.10
Thread model: posix
gcc version 4.6.0 20100922 (experimental) (GCC)

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |i386-pc-solaris2.10
   Target Milestone|---                         |4.6.0
            Summary|Bootstrap fails on          |[4.6 Regression] Bootstrap
                   |i386-pc-solaris2.10         |fails on
                   |                            |i386-pc-solaris2.10

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2010.10.14 15:56:50
                 CC|                            |hjl.tools at gmail dot com
     Ever Confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-14 15:56:50 UTC ---
Please provide preprocessed file.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-14 15:57:52 UTC ---
Please also show the full options passed to cc1.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #3 from Art Haas <ahaas at airmail dot net> 2010-10-14 20:10:55 UTC ---
Here's the compile command output with the '-v -save-temps' options added:
Reading specs from /export/home/arth/gnu/gcc-1014/./prev-gcc/specs
COLLECT_GCC=/export/home/arth/gnu/gcc-1014/./prev-gcc/xgcc
COLLECT_LTO_WRAPPER=/export/home/arth/gnu/gcc-1014/./prev-gcc/lto-wrapper
Target: i386-pc-solaris2.10
Configured with: /home/ahaas/gnu/gcc.git/configure
--prefix=/export/home/arth/local --enable-languages=c,c++,objc,fortran
--disable-nls --with-gmp=/export/home/arth/local
--with-mpfr=/export/home/arth/local --enable-checking=release
--enable-threads=posix --with-gnu-as --with-as=/export/home/arth/local/bin/as
--with-gnu-ld --with-ld=/export/home/arth/local/bin/ld
--enable-libstdcxx-pch=no --enable-objc-gc --build=i386-pc-solaris2.10
Thread model: posix
gcc version 4.6.0 20101014 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-B' '/export/home/arth/gnu/gcc-1014/./prev-gcc/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/bin/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/bin/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/lib/' '-isystem'
'/export/home/arth/local/i386-pc-solaris2.10/include' '-isystem'
'/export/home/arth/local/i386-pc-solaris2.10/sys-include' '-c' '-O2' '-v'
'-save-temps' '-gtoggle' '-D' 'IN_GCC' '-Wextra' '-Wall' '-Wwrite-strings'
'-Wcast-qual' '-Wstrict-prototypes' '-Wmissing-prototypes'
'-Wmissing-format-attribute' '-pedantic' '-Wno-long-long'
'-Wno-variadic-macros' '-Wno-overlength-strings' '-Werror'
'-Wold-style-definition' '-Wc++-compat' '-D' 'HAVE_CONFIG_H' '-I' '.' '-I'
'lto'
'-I' '/home/ahaas/gnu/gcc.git/gcc' '-I' '/home/ahaas/gnu/gcc.git/gcc/lto' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../include' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libcpp/include' '-I'
'/export/home/arth/local/include' '-I' '/export/home/arth/local/include' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libdecnumber' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libdecnumber/dpd' '-I' '../libdecnumber' '-I'
'/usr/include/libelf' '-I' '/export/home/arth/local/include' '-o'
'lto/lto-lang.o' '-mtune=generic' '-march=pentium4'
 /export/home/arth/gnu/gcc-1014/./prev-gcc/cc1 -E -quiet -v -I . -I lto -I
/home/ahaas/gnu/gcc.git/gcc -I /home/ahaas/gnu/gcc.git/gcc/lto -I
/home/ahaas/gnu/gcc.git/gcc/../include -I
/home/ahaas/gnu/gcc.git/gcc/../libcpp/include -I
/export/home/arth/local/include -I /export/home/arth/local/include -I
/home/ahaas/gnu/gcc.git/gcc/../libdecnumber -I
/home/ahaas/gnu/gcc.git/gcc/../libdecnumber/dpd -I
../libdecnumber -I /usr/include/libelf -I /export/home/arth/local/include
-iprefix
/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/i386-pc-solaris2.10/4.6.0/
-isystem /export/home/arth/gnu/gcc-1014/./prev-gcc/include -isystem
/export/home/arth/gnu/gcc-1014/./prev-gcc//export/home/arth/gnu/gcc-1014/./prev-gcc/cc1
-fpreprocessed lto-lang.i -quiet
-dumpbase lto-lang.c -mtune=generic -march=pentium4 -auxbase-strip
lto/lto-lang.o -gtoggle -O2 -Wextra -Wall -Wwrite-strings -Wcast-qual
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-Wold-style-definition -Wc++-compat -version -o lto-lang.s
GNU C (GCC) version 4.6.0 20101014 (experimental) (i386-pc-solaris2.10)
        compiled by GNU C version 4.6.0 20100922 (experimental), GMP version
4.3.2, MPFR version 3.0.0-dev, MPC version 0.8.3-dev
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C (GCC) version 4.6.0 20101014 (experimental) (i386-pc-solaris2.10)
        compiled by GNU C version 4.6.0 20100922 (experimental), GMP version
4.3.2, MPFR version 3.0.0-dev, MPC version 0.8.3-dev
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 7103326444b546ece44c24d65aa5c71b
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c: In function 'lto_type_for_mode':
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c:951:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2out.c:1881
Please submit a full bug report,include-fixed -D IN_GCC -D HAVE_CONFIG_H
-isystem /export/home/arth/local/i386-pc-solaris2.10/include -isystem
/export/home/arth/local/i386-pc-solaris2.10/sys-include
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c -mtune=generic -march=pentium4
-Wextra -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat -gtoggle -fworking-directory -O2 -fpch-preprocess -o lto-lang.i
ignoring nonexistent directory
"/export/home/arth/local/i386-pc-solaris2.10/include"
ignoring nonexistent directory
"/export/home/arth/local/i386-pc-solaris2.10/sys-include"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/i386-pc-solaris2.10/4.6.0/include"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/i386-pc-solaris2.10/4.6.0/include-fixed"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/i386-pc-solaris2.10/4.6.0/../../../../i386-pc-solaris2.10/include"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/../../lib/gcc/i386-pc-solaris2.10/4.6.0/include"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/../../include"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/../../lib/gcc/i386-pc-solaris2.10/4.6.0/include-fixed"
ignoring nonexistent directory
"/export/home/arth/gnu/gcc-1014/prev-gcc/../lib/gcc/../../lib/gcc/i386-pc-solaris2.10/4.6.0/../../../../i386-pc-solaris2.10/include"
ignoring duplicate directory "/export/home/arth/local/include"
ignoring nonexistent directory "/usr/include/libelf"
ignoring duplicate directory "/export/home/arth/local/include"
#include "..." search starts here:
#include <...> search starts here: .
 lto
 /home/ahaas/gnu/gcc.git/gcc
 /home/ahaas/gnu/gcc.git/gcc/lto
 /home/ahaas/gnu/gcc.git/gcc/../include
 /home/ahaas/gnu/gcc.git/gcc/../libcpp/include
 /export/home/arth/local/include
 /home/ahaas/gnu/gcc.git/gcc/../libdecnumber
 /home/ahaas/gnu/gcc.git/gcc/../libdecnumber/dpd
 ../libdecnumber
 /export/home/arth/gnu/gcc-1014/./prev-gcc/include
 /export/home/arth/gnu/gcc-1014/./prev-gcc/include-fixed
 /usr/local/include
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-B' '/export/home/arth/gnu/gcc-1014/./prev-gcc/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/bin/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/bin/' '-B'
'/export/home/arth/local/i386-pc-solaris2.10/lib/' '-isystem'
'/export/home/arth/local/i386-pc-solaris2.10/include' '-isystem'
'/export/home/arth/local/i386-pc-solaris2.10/sys-include' '-c' '-O2' '-v'
'-save-temps' '-gtoggle' '-D' 'IN_GCC' '-Wextra' '-Wall' '-Wwrite-strings'
'-Wcast-qual' '-Wstrict-prototypes' '-Wmissing-prototypes'
'-Wmissing-format-attribute' '-pedantic' '-Wno-long-long'
'-Wno-variadic-macros' '-Wno-overlength-strings' '-Werror'
'-Wold-style-definition' '-Wc++-compat' '-D' 'HAVE_CONFIG_H' '-I' '.' '-I'
'lto'
'-I' '/home/ahaas/gnu/gcc.git/gcc' '-I' '/home/ahaas/gnu/gcc.git/gcc/lto' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../include' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libcpp/include' '-I'
'/export/home/arth/local/include' '-I' '/export/home/arth/local/include' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libdecnumber' '-I'
'/home/ahaas/gnu/gcc.git/gcc/../libdecnumber/dpd' '-I' '../libdecnumber' '-I'
'/usr/include/libelf' '-I' '/export/home/arth/local/include' '-o'
'lto/lto-lang.o' '-mtune=generic' '-march=pentium4'
/export/home/arth/gnu/gcc-1014/./prev-gcc/cc1 -fpreprocessed lto-lang.i -quiet
-dumpbase lto-lang.c -mtune=generic -march=pentium4 -auxbase-strip
lto/lto-lang.o -gtoggle -O2 -Wextra -Wall -Wwrite-strings -Wcast-qual
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-Wold-style-definition -Wc++-compat -version -o lto-lang.s
GNU C (GCC) version 4.6.0 20101014 (experimental) (i386-pc-solaris2.10)
        compiled by GNU C version 4.6.0 20100922 (experimental), GMP version
4.3.2, MPFR version 3.0.0-dev, MPC version 0.8.3-dev
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C (GCC) version 4.6.0 20101014 (experimental) (i386-pc-solaris2.10)
        compiled by GNU C version 4.6.0 20100922 (experimental), GMP version
4.3.2, MPFR version 3.0.0-dev, MPC version 0.8.3-dev
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 7103326444b546ece44c24d65aa5c71b
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c: In function 'lto_type_for_mode':
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c:951:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2out.c:1881
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

I'll be attaching the compressed file 'lto-lang.i' next.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #4 from Art Haas <ahaas at airmail dot net> 2010-10-14 20:13:45 UTC ---
Created attachment 22044
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22044
Pre-processed 'lto-lang.c' file

The pre-processed 'lto-lang.c' output has been sent and is compressed due to
size.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #5 from Art Haas <ahaas at airmail dot net> 2010-10-16 19:15:51 UTC ---
This morning's build succeeded:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/export/home/arth/local/libexec/gcc/i386-pc-solaris2.10/4.6.0/lto-wrapper
Target: i386-pc-solaris2.10
Configured with: /home/ahaas/gnu/gcc.git/configure
--prefix=/export/home/arth/local --enable-languages=c,c++,objc,fortran
--disable-nls --with-gmp=/export/home/arth/local
--with-mpfr=/export/home/arth/local --enable-checking=release
--enable-threads=posix --with-gnu-as --with-as=/export/home/arth/local/bin/as
--with-gnu-ld --with-ld=/export/home/arth/local/bin/ld
--enable-libstdcxx-pch=no --enable-objc-gc --build=i386-pc-solaris2.10
Thread model: posix
gcc version 4.6.0 20101016 (experimental) (GCC)
$

A build from yesterday morning failed, so some patch applied within the last 24
hours has resolved the issue I've been seeing. I'll try to do a reverse 'git
bisect' to determine which patch actually fixed the build.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #6 from Art Haas <ahaas at airmail dot net> 2010-10-17 15:45:40 UTC ---
Running 'git bisect' but interpreting a failed build as 'good' and a successful
build as 'bad' leads to this commit which restored the build:

7332acfcfbd1a9c70674c62419096022f72bd201 is the first bad commit
commit 7332acfcfbd1a9c70674c62419096022f72bd201
Author: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Sat Oct 16 12:12:24 2010 +0000

        * config/arm/arm.c (arm_option_optimization): Set
        flag_section_anchors to 1 not 2.
        * config/i386/i386.c (ix86_option_override_internal): Check
        global_options_set.x_flag_zee and
        global_options_set.x_flag_omit_frame_pointer.
        (ix86_option_optimization): Don't set flag_omit_frame_pointer and
        flag_zee to 2.
        * config/i386/sol2-10.h (SUBTARGET_OVERRIDE_OPTIONS): Check
        global_options_set.x_flag_omit_frame_pointer.
        * config/rs6000/rs6000.c (rs6000_option_init_struct): Set
        opts->x_flag_section_anchors to 1 not 2.
        * config/sh/sh.c (sh_option_optimization): Don't set
        flag_schedule_insns to 2.
        (sh_option_override): Check
        global_options_set.x_flag_schedule_insns.
        * opts.c (finish_options): Check opts_set->x_flag_section_anchors.


    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165539
138bc75d-0d04-0410-961f-82ee72b054a4

:040000 040000 4d93fdb436ce6c956250256c221c663f7d085bb0
0dd0b04692b88501a315407dd58cfaae228d1c89 M      gcc

I'll leave it to those much more savvy regarding GCC internals to figure out
what caused the initial build failure and why things started working again.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #7 from Art Haas <ahaas at airmail dot net> 2010-10-18 15:03:56 UTC ---
My bootstrap build succeeded for the this morning again, so I suggest closing
this ticket.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[joseph at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2010-10-18 15:37:04 UTC ---
On Sun, 17 Oct 2010, ahaas at airmail dot net wrote:

> Running 'git bisect' but interpreting a failed build as 'good' and a successful
> build as 'bad' leads to this commit which restored the build:
> 
> 7332acfcfbd1a9c70674c62419096022f72bd201 is the first bad commit
> commit 7332acfcfbd1a9c70674c62419096022f72bd201
> Author: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date:   Sat Oct 16 12:12:24 2010 +0000
> 
>         * config/arm/arm.c (arm_option_optimization): Set
>         flag_section_anchors to 1 not 2.
>         * config/i386/i386.c (ix86_option_override_internal): Check
>         global_options_set.x_flag_zee and
>         global_options_set.x_flag_omit_frame_pointer.
>         (ix86_option_optimization): Don't set flag_omit_frame_pointer and
>         flag_zee to 2.
>         * config/i386/sol2-10.h (SUBTARGET_OVERRIDE_OPTIONS): Check
>         global_options_set.x_flag_omit_frame_pointer.

This certainly wasn't meant to change the behavior of the compiler at all.  
I'll test a patch to restore the original intended behavior (and so the 
build failure for this target).

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #9 from Art Haas <ahaas at airmail dot net> 2010-10-18 21:27:59 UTC ---
Once the patch discussed in the following mail was applied:

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01538.html

I can confirm that the bootstrap failure I've been seeing has returned:

/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c: In function 'lto_type_for_mode':
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c:951:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2out.c:1881

I successfully bootstrapped the compiler when the latest revision in my repo
was the one immediately before the frame-pointer patch was applied:

commit a1176db975a2a05d65e0277dd812d4e6844814b2
Author: nicola <nicola@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Mon Oct 18 18:54:01 2010 +0000

    In gcc/objc/:
        { ... snip ... }

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-21 18:42:22 UTC ---
Can you try

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01858.html

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #11 from Art Haas <ahaas at airmail dot net> 2010-10-26 14:40:04 UTC ---
I ended up trying the version posted in a follow-up mail:

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02065.html

The bootstrap still failed.

I've now got access to a i386-pc-solaris2.11 box which also fails to bootstrap.
On this system I'm configuring GCC to use the GNU assembler and Sun linker.
I've also by trying this configuration on the i386-pc-solaris2.10 machine I
normally use and the bootstrap fails.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-30 13:59:08 UTC ---
Please try:

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02569.html

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #13 from Art Haas <ahaas at airmail dot net> 2010-10-30 17:55:24 UTC ---
The patch listed here did not help:

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02569.html

The boostrap build still fails:

/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c: In function 'lto_type_for_mode':
/home/ahaas/gnu/gcc.git/gcc/lto/lto-lang.c:951:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2out.c:1881

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #14 from Rainer Orth <ro at gcc dot gnu.org> 2010-11-03 13:11:19 UTC ---
Created attachment 22250
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22250
preprocessed insn-recog.c

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #15 from Rainer Orth <ro at gcc dot gnu.org> 2010-11-03 13:12:51 UTC ---
After the fix for PR tree-optimization/46286 went in, I'm seeing this ICE, too:

Running

$ cc1 -fpreprocessed insn-recog.i -quiet -dumpbase insn-recog.c -mtune=generic
-march=pentium4 -auxbase-strip insn-recog.o -g -O2 -Wextra -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -version
-fno-common -o insn-recog.s

Breakpoint 1, fancy_abort (file=0xa44117c <error reading variable>, line=1881,
function=0xa448460 <error reading variable>) at
/vol/gcc/src/hg/trunk/local/gcc/diagnostic.c:881
(gdb) where
#0  fancy_abort (file=0xa44117c <error reading variable>, line=1881,
function=0xa448460 <error reading variable>) at
/vol/gcc/src/hg/trunk/local/gcc/diagnostic.c:881
#1  0x08578396 in dwarf2out_frame_debug_adjust_cfa (pat=0xfa6a7e04,
label=0xa765edc <error reading variable>) at
/vol/gcc/src/hg/trunk/local/gcc/dwarf2out.c:1881
#2  0x08579e13 in dwarf2out_frame_debug (insn=0xf8395d38, after_p=1 '<error
reading variable>) at /vol/gcc/src/hg/trunk/local/gcc/dwarf2out.c:2779
#3  0x08687db0 in final_scan_insn (insn=0xf8395d38, file=0xa87d6d8,
optimize_p=2, nopeepholes=0, seen=0x8047144) at
/vol/gcc/src/hg/trunk/local/gcc/final.c:2706
#4  0x0868673a in final (first=0xfb9a8cc0, file=0xa87d6d8, optimize_p=2) at
/vol/gcc/src/hg/trunk/local/gcc/final.c:1719
#5  0x0868a13b in rest_of_handle_final () at
/vol/gcc/src/hg/trunk/local/gcc/final.c:4231
#6  0x08b2cce0 in execute_one_pass (pass=0xa75cd20) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:1560
#7  0x08b2ceaf in execute_pass_list (pass=0xa75cd20) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:1615
#8  0x08b2cecf in execute_pass_list (pass=0xa75d480) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:1616
#9  0x08b2cecf in execute_pass_list (pass=0xa75d440) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:1616
#10 0x090ee195 in tree_rest_of_compilation (fndecl=0xfea21b00) at
/vol/gcc/src/hg/trunk/local/gcc/tree-optimize.c:422
#11 0x09a5c00d in cgraph_expand_function (node=0xfd6bfa50) at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1493
#12 0x09a5c1ac in cgraph_expand_all_functions () at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1552
#13 0x09a5c757 in cgraph_optimize () at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1808
#14 0x09a5a7bf in cgraph_finalize_compilation_unit () at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1016
#15 0x081095a0 in c_write_global_declarations () at
/vol/gcc/src/hg/trunk/local/gcc/c-decl.c:9827
#16 0x08e48ef5 in compile_file () at
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:931
#17 0x08e4b05c in do_compile () at
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:2359
#18 0x08e4b187 in toplev_main (argc=30, argv=0x8047408) at
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:2419
#19 0x082a6cee in main (argc=30, argv=0x8047408) at
/vol/gcc/src/hg/trunk/local/gcc/main.c:36

This gcc_assert triggers (in dwarf2out.c (dwarf2out_frame_debug_adjust_cfa)):

  switch (GET_CODE (src))
    {
    case PLUS:
      gcc_assert (REGNO (XEXP (src, 0)) == cfa.reg);
      cfa.offset -= INTVAL (XEXP (src, 1));
      break;

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-03 17:09:36 UTC ---
Please try revision 166259.

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[ahaas at airmail dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

--- Comment #17 from Art Haas <ahaas at airmail dot net> 2010-11-04 12:52:11 UTC ---
My build from this morning succeeded, so reverting the patch from several weeks
ago has resolved the bootstrap error:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/export/home/arth/local/libexec/gcc/i386-pc-solaris2.10/4.6.0/lto-wrapper
Target: i386-pc-solaris2.10
Configured with: /home/ahaas/gnu/gcc.git/configure
--prefix=/export/home/arth/local --enable-languages=c,c++,objc,fortran
--disable-nls --with-gmp=/export/home/arth/local
--with-mpfr=/export/home/arth/local --enable-checking=release
--enable-threads=posix --with-gnu-as --with-as=/export/home/arth/local/bin/as
--with-gnu-ld --with-ld=/export/home/arth/local/bin/ld
--enable-libstdcxx-pch=no --enable-objc-gc --build=i386-pc-solaris2.10
Thread model: posix
gcc version 4.6.0 20101104 (experimental) [master revision
b9be572:b94eff6:4b98788102c16a253dbdac0c91e13219d1c7cbc4] (GCC)
$

[Bug bootstrap/46018] [4.6 Regression] Bootstrap fails on i386-pc-solaris2.10

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46018

H.J. Lu <hjl.tools at gmail dot com> changed:

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

--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-05 13:07:44 UTC ---
Fixed.