[Bug bootstrap/44959] New: [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[Bug bootstrap/44959] New: [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge dot net]

X-Bugzilla-Reason: CC

The problem was first noticed with 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40894#c4 with svn-r152154 .

Now that 4.5.0 is released, here is the build failure - it looks the same as in
the url above, and earlier than bug 40894 so this I guess qualifies as a new
bug.


make[3]: Entering directory `/home/htl10/tmp-build/gcc-450-dir'
rm -f stage_current
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-450-dir'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/min-insn-modes.o differs
gcc/dummy-checksum.o differs
gcc/insn-peep.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-dependences.o differs
gcc/graphite-interchange.o differs
gcc/graphite-poly.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/loop-doloop.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/host-default.o differs
gcc/gcc-options.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-450-dir'
make[1]: *** [stage3-bubble] Error 2
make[1]: Target `stage4-bubble' not remade because of errors.
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-450-dir'
make: *** [bootstrap4-lean] Error 2


-- 
           Summary: [4.5 Regression] bootstrap failed at Comparing stages 2
                    and 3
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: htl10 at users dot sourceforge dot net
  GCC host triplet: alphaev68-dec-osf5.1a


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.5 Regression] bootstrap  |[4.5 Regression] bootstrap
                   |failed at Comparing stages 2|failed at Comparing stages 2
                   |and 3                       |and 3
   Target Milestone|---                         |4.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-07-31 09:30 -------
GCC 4.5.1 is being released, adjusting target milestone.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.1                       |4.5.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #23 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 20:48:25 UTC ---
(In reply to comment #22)
> > --- Comment #21 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:15:52 UTC ---
> 
> I think there was a misunderstanding: I specificially asked for the
> smallest of the differing .o files *other than cc1*-checksum.o* since
> the latter are expected to differ between stages.  But for the moment, I
> think we can do with cc1-checksum.o alone.

Okay, sorry about that.

> > There are two curious things:
> > 1. why does the 2nd stage drops to only about 600 byte. (I assume 20-30k is
> > normal).
> 
> That's certainly completely unexpected.  I'd ask you to rebuild
> cc1-checksum.o for stage2 and stage3 (move the .o's aside, run make -n
> cc1-checksum.o, then manually add -v -save-temps to the compilation
> line.  Then attach a tarball with the .c and output files and the gcc -v
> output to see if there are any obvious diffences between the compilations.

I'll get round to it when I find some time to do so, soon.

> > 2. I did have a success with 4.6.1 (and I believe with both make/make
> > bootstrap4 or 4-lean) a while ago, therefore I closed the bug. I did not
> 
> Please always try this with a plain make/make bootstrap.  I don't
> currently want to debug issues which might be caused by non-default
> targets.  I don't see why they should be, but please let us stay with
> the basics.

Out of the three attachments, one is with plain make, the other two, one with
bootstrap4 and bootstrap4-lean. (I think I tried them in the order of 4-lean,
4, plain - so you could see which is which from the time stamp). I know what
you are saying, that's why I tried it simplier and simpler :-(.

> > install 4.6.1 at the time but stayed at 4.3.3 (mostly to test and verify the
> > other issues), but now I cannot build 4.6.1 correctly again. The system has not
> > been changed much since then, the only changes I can think of which is relevant
> > is that I installed updated versions of the gcc dependencies
> > (mpfr-3.1.0,mpc-0.9,gmp-5.0.5)
> > from the most updated versions the last time I looked at gcc.
> 
> This is certainly a problem: the installation guide states
> 
>    Several support libraries are necessary to build GCC, some are required,
>    others optional. While any sufficiently new version of required tools
>    usually work, library requirements are generally stricter. Newer
>    versions may work in some cases, but it's safer to use the exact
>    versions documented. We appreciate bug reports about problems with newer
>    versions, though.
> 
> The sentence about newer versions is there for a reason.  In fact, on
> Tru64 UNIX the situation is even worse: gmp 4.3.2 make check fails for
> me, so I'm currently staying with gmp 4.2.1, mpfr 2.3.2, and mpc 0.8.
> 
> Before using *any* version of gmp/mpfr/mpc with gcc (or for any other
> purpose), make sure that they pass make check, as prominently stated in
> e.g. the gmp announcements.
> 
>     Rainer

Argh :-(. I did run make check on one of them (gmp?) because it says so at the
end of make or 'make install', and it finished okay.

I can certainly go back - if it is worthwhile. I'll try to re-do the checksum
object files first.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #22 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2012-05-08 15:36:03 UTC ---
> --- Comment #21 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:15:52 UTC ---

I think there was a misunderstanding: I specificially asked for the
smallest of the differing .o files *other than cc1*-checksum.o* since
the latter are expected to differ between stages.  But for the moment, I
think we can do with cc1-checksum.o alone.

> There are two curious things:
> 1. why does the 2nd stage drops to only about 600 byte. (I assume 20-30k is
> normal).

That's certainly completely unexpected.  I'd ask you to rebuild
cc1-checksum.o for stage2 and stage3 (move the .o's aside, run make -n
cc1-checksum.o, then manually add -v -save-temps to the compilation
line.  Then attach a tarball with the .c and output files and the gcc -v
output to see if there are any obvious diffences between the compilations.

> 2. I did have a success with 4.6.1 (and I believe with both make/make
> bootstrap4 or 4-lean) a while ago, therefore I closed the bug. I did not

Please always try this with a plain make/make bootstrap.  I don't
currently want to debug issues which might be caused by non-default
targets.  I don't see why they should be, but please let us stay with
the basics.

> install 4.6.1 at the time but stayed at 4.3.3 (mostly to test and verify the
> other issues), but now I cannot build 4.6.1 correctly again. The system has not
> been changed much since then, the only changes I can think of which is relevant
> is that I installed updated versions of the gcc dependencies
> (mpfr-3.1.0,mpc-0.9,gmp-5.0.5)
> from the most updated versions the last time I looked at gcc.

This is certainly a problem: the installation guide states

   Several support libraries are necessary to build GCC, some are required,
   others optional. While any sufficiently new version of required tools
   usually work, library requirements are generally stricter. Newer
   versions may work in some cases, but it's safer to use the exact
   versions documented. We appreciate bug reports about problems with newer
   versions, though.

The sentence about newer versions is there for a reason.  In fact, on
Tru64 UNIX the situation is even worse: gmp 4.3.2 make check fails for
me, so I'm currently staying with gmp 4.2.1, mpfr 2.3.2, and mpc 0.8.

Before using *any* version of gmp/mpfr/mpc with gcc (or for any other
purpose), make sure that they pass make check, as prominently stated in
e.g. the gmp announcements.

    Rainer

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #21 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:15:52 UTC ---
There are two curious things:
1. why does the 2nd stage drops to only about 600 byte. (I assume 20-30k is
normal).

2. I did have a success with 4.6.1 (and I believe with both make/make
bootstrap4 or 4-lean) a while ago, therefore I closed the bug. I did not
install 4.6.1 at the time but stayed at 4.3.3 (mostly to test and verify the
other issues), but now I cannot build 4.6.1 correctly again. The system has not
been changed much since then, the only changes I can think of which is relevant
is that I installed updated versions of the gcc dependencies
(mpfr-3.1.0,mpc-0.9,gmp-5.0.5)
from the most updated versions the last time I looked at gcc.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #20 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:08:17 UTC ---
Created attachment 27348
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27348
3rd set of those checksum files. tar.gz'ed

This one is from 4.6.2 (the other two from 4.6.1), just plain make.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #19 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:07:03 UTC ---
Created attachment 27347
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27347
another set of those checksum files. tar.gz'ed

I think this one is from make bootstrap4

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #18 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-08 14:05:56 UTC ---
Created attachment 27346
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27346
one set of those checksum files. tar.gz'ed

I think this one is from 4.6.1, make bootstrap4-lean

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #17 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2012-05-07 12:37:37 UTC ---
While the checksum files are expected to differ (thus there are only
warnings about them), the size increase looks really strange: in my
current 4.6.4 build on alpha-dec-osf5.1b I have

-rw-r--r-- 1 ro gcc 22944 May  6 05:01 gcc/cc1-checksum.o
-rw-r--r-- 1 ro gcc 22944 May  6 03:38 prev-gcc/cc1-checksum.o
-rw-r--r-- 1 ro gcc 28504 May  5 23:58 stage1-gcc/cc1-checksum.o

Could you please attach the one smallest of the non *-checksum.o
differing files from all 3 stages for investigation?

Thanks.
    Rainer

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.6.3

--- Comment #16 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-07 10:25:19 UTC ---
Failed with 4.6.3 (in addition to 4.6.2).

ls -l */cc*-checksum.o
-rw-r--r--   1 root     system       592 May  7 10:05 stage2-gcc/cc1-checksum.o
-rw-r--r--   1 root     system       600 May  7 10:33
stage2-gcc/cc1obj-checksum.o
-rw-r--r--   1 root     system       600 May  7 10:16
stage2-gcc/cc1plus-checksum.o
-rw-r--r--   1 root     system     22928 May  7 10:59 stage3-gcc/cc1-checksum.o
-rw-r--r--   1 root     system     22928 May  7 11:07
stage3-gcc/cc1obj-checksum.o
-rw-r--r--   1 root     system     22936 May  7 11:02
stage3-gcc/cc1plus-checksum.o

Time to go back to 4.6.1 and see...

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |
      Known to fail|                            |4.6.2

--- Comment #15 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2012-05-07 03:21:20 UTC ---
/home/htl10/tmp-build/gcc-4.6.2-build'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/version.o differs
gcc/build/min-insn-modes.o differs
gcc/c-lang.o differs
gcc/insn-peep.o differs
gcc/insn-enums.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-cloog-util.o differs
gcc/graphite-dependences.o differs
gcc/graphite-flattening.o differs
gcc/graphite-poly.o differs
gcc/graphite-interchange.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/hwint.o differs
gcc/loop-doloop.o differs
gcc/target-globals.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs

File sizes seems crazy:

# ls -l */cc*-checksum.o
-rw-r--r--   1 root     system       592 May  7 02:38 stage2-gcc/cc1-checksum.o
-rw-r--r--   1 root     system       600 May  7 03:07
stage2-gcc/cc1obj-checksum.o
-rw-r--r--   1 root     system       600 May  7 02:49
stage2-gcc/cc1plus-checksum.o
-rw-r--r--   1 root     system     22928 May  7 03:33 stage3-gcc/cc1-checksum.o
-rw-r--r--   1 root     system     22928 May  7 03:40
stage3-gcc/cc1obj-checksum.o
-rw-r--r--   1 root     system     22936 May  7 03:36
stage3-gcc/cc1plus-checksum.o

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

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

--- Comment #14 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-08-05 05:38:58 UTC ---
Retry 4.5.3 with absolute paths, and still fails; so I won't bother with 4.6.0
(likely as it was, fails). So it looks like it was a genuine regression in
4.5.x that was fixed some how with 4.6.1 .

CONFIG_SHELL=/usr/local/bin/bash /home/htl10/tmp-build/gcc-4.5.3/configure &&
CONFIG_SHELL=/usr/local/bin/bash /usr/local/bin/make

----------------------------
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/min-insn-modes.o differs
gcc/dummy-checksum.o differs
gcc/insn-peep.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-dependences.o differs
gcc/graphite-interchange.o differs
gcc/graphite-poly.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/loop-doloop.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/gcc-options.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
make: *** [all] Error 2
-------------------------------

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.6.1

--- Comment #13 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-08-03 15:32:31 UTC ---
adding 4.6.1 known to work. pending retrying 4.5.3/4.6.0

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #12 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-08-03 15:29:50 UTC ---
(In reply to comment #11)
> Did you use an absolute path for the source dir?  There have been
> problems with relative paths in the past.

Tried absolute path with 4.6.1, and compilation finishes alright.

cd /home/htl10/tmp-build
tar jxpvf
../sources/www.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.6.1/gcc-4.6.1.tar.bz2
mkdir gcc-461-obj
cd gcc-461-obj
CONFIG_SHELL=/usr/local/bin/bash /home/htl10/tmp-build/gcc-4.6.1/configure &&
CONFIG_SHELL=/usr/local/bin/bash /usr/local/bin/make

---------------

I am running make -k check at the moment but will retry 4.5.3/4.6.0 afterwards.
Note that 4.4.6 fails even with absolute path at a later place.
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40947#c14)

So I can probably say this bug was fixed with 4.6.1.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #11 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-08-02 11:11:00 UTC ---
> Not a subdir -  a parallel directory.
>
> source is at  /home/htl10/tmp-build/gcc-4.5.1
> obj dir is at /home/htl10/tmp-build/gcc-451-dir

Did you use an absolute path for the source dir?  There have been
problems with relative paths in the past.

    Rainer

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #10 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-08-02 11:08:25 UTC ---
> Please try a 4.6.1 tarball and *don't* use relative paths to configure/build in
> a subdir of the source tree.  I bootstrap gcc (4.5 to 4.7) on Tru64 UNIX all
> the time and never saw this problem.

Not a subdir -  a parallel directory.

source is at  /home/htl10/tmp-build/gcc-4.5.1
obj dir is at /home/htl10/tmp-build/gcc-451-dir

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ro at gcc dot gnu.org

--- Comment #9 from Rainer Orth <ro at gcc dot gnu.org> 2011-07-19 12:27:09 UTC ---
Please try a 4.6.1 tarball and *don't* use relative paths to configure/build in
a subdir of the source tree.  I bootstrap gcc (4.5 to 4.7) on Tru64 UNIX all
the
time and never saw this problem.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

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

--- Comment #8 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-04-30 10:54:00 UTC ---
4.5.3 also fails the same way.

CONFIG_SHELL=/usr/local/bin/bash ../gcc-4.5.3/configure &&
CONFIG_SHELL=/usr/local/bin/bash /usr/local/bin/make
....

make[2]: Entering directory `/home/htl10/tmp-build/gcc-453-obj'
make[3]: Entering directory `/home/htl10/tmp-build/gcc-453-obj'
rm -f stage_current
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/min-insn-modes.o differs
gcc/dummy-checksum.o differs
gcc/insn-peep.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-dependences.o differs
gcc/graphite-interchange.o differs
gcc/graphite-poly.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/loop-doloop.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/gcc-options.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-453-obj'
make: *** [all] Error 2

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.6.0

--- Comment #7 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2011-04-30 07:16:11 UTC ---
4.6.0 also fails.

CONFIG_SHELL=/usr/local/bin/bash ../gcc-4.6.0/configure &&
CONFIG_SHELL=/usr/local/bin/bash /usr/local/bin/make
....

make[3]: Entering directory `/home/htl10/tmp-build/gcc-460-obj'
rm -f stage_current
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-460-obj'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/version.o differs
gcc/build/min-insn-modes.o differs
gcc/c-lang.o differs
gcc/insn-peep.o differs
gcc/insn-enums.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-cloog-util.o differs
gcc/graphite-dependences.o differs
gcc/graphite-flattening.o differs
gcc/graphite-poly.o differs
gcc/graphite-interchange.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/hwint.o differs
gcc/loop-doloop.o differs
gcc/target-globals.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-460-obj'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-460-obj'
make: *** [all] Error 2

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.3                       |4.5.4

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-28 14:51:49 UTC ---
GCC 4.5.3 is being released, adjusting target milestone.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

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

--- Comment #5 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2010-12-17 12:22:08 UTC ---
(In reply to comment #4)
> GCC 4.5.2 is being released, adjusting target milestone.

same problem with 4.5.2:

CONFIG_SHELL=/usr/local/bin/bash ../gcc-4.5.2/configure &&
CONFIG_SHELL=/usr/local/bin/bash /usr/local/bin/make
...
make[2]: Entering directory `/home/htl10/tmp-build/gcc-452-obj'
make[3]: Entering directory `/home/htl10/tmp-build/gcc-452-obj'
rm -f stage_current
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-452-obj'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/min-insn-modes.o differs
gcc/dummy-checksum.o differs
gcc/insn-peep.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-dependences.o differs
gcc/graphite-interchange.o differs
gcc/graphite-poly.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/loop-doloop.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/host-default.o differs
gcc/gcc-options.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-452-obj'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-452-obj'
make: *** [all] Error 2
bash-2.05a#

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.2                       |4.5.3

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-12-16 13:03:40 UTC ---
GCC 4.5.2 is being released, adjusting target milestone.

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[htl10 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

Hin-Tak Leung <htl10 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.5.0, 4.5.1

--- Comment #3 from Hin-Tak Leung <htl10 at users dot sourceforge.net> 2010-12-15 01:53:41 UTC ---
(In reply to comment #2)
> Please verify if 4.5.1 is still broken.

Still broken, and apparently still at the same place:

../gcc-4.5.1/configure && make bootstrap4-lean

------------------------------------------------
make[2]: Entering directory `/home/htl10/tmp-build/gcc-obj'
make[3]: Entering directory `/home/htl10/tmp-build/gcc-obj'
rm -f stage_current
make[3]: Leaving directory `/home/htl10/tmp-build/gcc-obj'
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
Bootstrap comparison failure!
gcc/java/win32-host.o differs
gcc/build/min-insn-modes.o differs
gcc/dummy-checksum.o differs
gcc/insn-peep.o differs
gcc/graphite-blocking.o differs
gcc/graphite-clast-to-gimple.o differs
gcc/graphite-dependences.o differs
gcc/graphite-interchange.o differs
gcc/graphite-poly.o differs
gcc/graphite-ppl.o differs
gcc/graphite-scop-detection.o differs
gcc/graphite-sese-to-poly.o differs
gcc/loop-doloop.o differs
gcc/version.o differs
gcc/vmsdbgout.o differs
gcc/xcoffout.o differs
gcc/host-default.o differs
gcc/gcc-options.o differs
gcc/collect2-aix.o differs
intl/osdep.o differs
libiberty/safe-ctype.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/htl10/tmp-build/gcc-obj'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/htl10/tmp-build/gcc-obj'
make: *** [bootstrap4-lean] Error 2
bash-2.05a# pwd
/home/htl10/tmp-build/gcc-obj
--------------------------------------

[Bug bootstrap/44959] [4.5 Regression] bootstrap failed at Comparing stages 2 and 3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2010.11.14 11:45:56
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-14 11:45:56 UTC ---
Please verify if 4.5.1 is still broken.