[Bug math/14281] New: Build error on Debian unstable using gcc 4.7.1

[Bug math/14281] New: Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

             Bug #: 14281
           Summary: Build error on Debian unstable using gcc 4.7.1
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: unassigned@sourceware.org
        ReportedBy: dschepler@gmail.com
    Classification: Unclassified


Created attachment 6468
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6468
Preprocessed s_isnan.c

When I try building glibc from git master branch on an up-to-date Debian sid
amd64 system, with gcc-4.7 version 4.7.1-1, I get this error:

make  subdir=math -C math ..=../ subdir_lib
make[2]: Entering directory `/home/lfs/sources/glibc-2.16/math'
gcc ../sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c -c -std=gnu99
-fgnu89-inline  -O2 -Wall -Winline -Wwrite-strings -fmerge-all-constants
-frounding-math -g -Wstrict-prototypes   -fPIC    -Wno-uninitialized  
-D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES -I../include
-I/home/lfs/sources/libc-build/math -I/home/lfs/sources/libc-build
-I../sysdeps/unix/sysv/linux/x86_64/64/nptl
-I../sysdeps/unix/sysv/linux/x86_64/64 -I../nptl/sysdeps/unix/sysv/linux/x86_64
-I../nptl/sysdeps/unix/sysv/linux/x86 -I../sysdeps/unix/sysv/linux/x86
-I../sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/wordsize-64
-I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread
-I../sysdeps/pthread -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu
-I../sysdeps/unix/inet -I../nptl/sysdeps/unix/sysv -I../sysdeps/unix/sysv
-I../sysdeps/unix/x86_64 -I../nptl/sysdeps/unix -I../sysdeps/unix
-I../sysdeps/posix -I../nptl/sysdeps/x86_64/64 -I../sysdeps/x86_64/64
-I../sysdeps/x86_64/fpu/multiarch -I../sysdeps/x86_64/fpu -I../sysdeps/x86/fpu
-I../sysdeps/x86_64/multiarch -I../nptl/sysdeps/x86_64 -I../sysdeps/x86_64
-I../sysdeps/x86 -I../sysdeps/ieee754/ldbl-96
-I../sysdeps/ieee754/dbl-64/wordsize-64 -I../sysdeps/ieee754/dbl-64
-I../sysdeps/ieee754/flt-32 -I../sysdeps/wordsize-64 -I../sysdeps/ieee754
-I../sysdeps/generic -I../nptl  -I.. -I../libio -I.  -D_LIBC_REENTRANT -include
../include/libc-symbols.h  -DPIC -DSHARED     -o
/home/lfs/sources/libc-build/math/s_isnan.os -MD -MP -MF
/home/lfs/sources/libc-build/math/s_isnan.os.dt -MT
/home/lfs/sources/libc-build/math/s_isnan.os 
../sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c:30:1: error: '__EI___isnan'
aliased to external symbol '__GI___isnan'
make[2]: *** [/home/lfs/sources/libc-build/math/s_isnan.os] Error 1
make[2]: Leaving directory `/home/lfs/sources/glibc-2.16/math'
make[1]: *** [math/subdir_lib] Error 2
make[1]: Leaving directory `/home/lfs/sources/glibc-2.16'
make: *** [all] Error 2

Attaching s_isnan.i from running this command with -save-temps.

BTW, if I make -k, then aside from the inevitable errors from libc.a and
libc.so not being built, the only errors I get are in s_isnan.c, s_finite.c,
s_isnanf.c, and s_finitef.c.  And then later, in the others stage,
fraiseexcpt.c.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-22 15:44:29 UTC ---
(In reply to comment #0)
> Created attachment 6468 [details]
> Preprocessed s_isnan.c
> 
> When I try building glibc from git master branch on an up-to-date Debian sid
> amd64 system, with gcc-4.7 version 4.7.1-1, I get this error:
> 

I can't reproduce it with

gcc version 4.7.2 20120622 (prerelease) (GCC) 

Have you tried FSF GCC 4.7.1?

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[aj at suse dot de]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

Andreas Jaeger <aj at suse dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aj at suse dot de

--- Comment #2 from Andreas Jaeger <aj at suse dot de> 2012-06-22 18:41:09 UTC ---
That's the same preprocessed file that my gcc 4.7.1 generates. So, this looks
fine.

I suspect a bug in GCC, perhaps a distro specific patch you're using.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[aj at suse dot de]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #3 from Andreas Jaeger <aj at suse dot de> 2012-06-22 18:44:16 UTC ---
Created attachment 6470
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6470
Minimal file, should show the problem

I'm attaching a small test case (just reduced your file to the minimal
version). It should fail to compile on your system if you compile manually. If
it does, please report it as bug against GCC since other GCC versions work just
fine with this.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #4 from Daniel Schepler <dschepler at gmail dot com> 2012-06-22 19:21:45 UTC ---
(In reply to comment #3)
> Created attachment 6470 [details]
> Minimal file, should show the problem
> 
> I'm attaching a small test case (just reduced your file to the minimal
> version). It should fail to compile on your system if you compile manually. If
> it does, please report it as bug against GCC since other GCC versions work just
> fine with this.

I couldn't reproduce the error with your attached file, whether I compiled just
with "gcc -c s_isnan_min.i" or put in all the flags from the command line I
posted.  On the other hand, "gcc -c s_isnan.i" does fail with the same error.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-22 19:47:28 UTC ---
(In reply to comment #4)
> 
> I couldn't reproduce the error with your attached file, whether I compiled just
> with "gcc -c s_isnan_min.i" or put in all the flags from the command line I
> posted.  On the other hand, "gcc -c s_isnan.i" does fail with the same error.

Use valgrind to see if there is anything odd.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #6 from Daniel Schepler <dschepler at gmail dot com> 2012-06-22 20:02:45 UTC ---
Created attachment 6471
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6471
Valgrind log from cc1 running on s_isnan.i

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #7 from Daniel Schepler <dschepler at gmail dot com> 2012-06-22 20:04:36 UTC ---
(In reply to comment #5)
> (In reply to comment #4)
> > 
> > I couldn't reproduce the error with your attached file, whether I compiled just
> > with "gcc -c s_isnan_min.i" or put in all the flags from the command line I
> > posted.  On the other hand, "gcc -c s_isnan.i" does fail with the same error.
> 
> Use valgrind to see if there is anything odd.

Hmm, yes, I do get a couple valgrind errors in cc1, attached.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-22 20:30:44 UTC ---
(In reply to comment #6)
> Created attachment 6471 [details]
> Valgrind log from cc1 running on s_isnan.i

It looks OK.  Please try FSF GCC 4.7.1.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #9 from Daniel Schepler <dschepler at gmail dot com> 2012-06-22 22:42:42 UTC ---
(In reply to comment #8)
> (In reply to comment #6)
> > Created attachment 6471 [details]
> > Valgrind log from cc1 running on s_isnan.i
> 
> It looks OK.  Please try FSF GCC 4.7.1.

Finally finished the build of FSF GCC 4.7.1, with a configuration as close as
possible to Debian's.  After the build, "`pwd`/gcc/xgcc -B`pwd`/gcc -c
/tmp/s_isnan.i -o /tmp/s_isnan.o" works fine.

So, I guess now I need to file a bug on Debian gcc-4.7, and close this bug
after I post a link to the Debian bug report.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #10 from Daniel Schepler <dschepler at gmail dot com> 2012-06-22 23:23:24 UTC ---
Bug filed with Debian BTS:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=678589

Will wait some time to see Debian package maintainer's response, before I close
this bug.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[aj at suse dot de]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

Andreas Jaeger <aj at suse dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jrnieder at gmail dot com

--- Comment #11 from Andreas Jaeger <aj at suse dot de> 2012-06-23 19:18:19 UTC ---
*** Bug 14285 has been marked as a duplicate of this bug. ***

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

Daniel Schepler <dschepler at gmail dot com> changed:

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

--- Comment #12 from Daniel Schepler <dschepler at gmail dot com> 2012-07-01 21:43:05 UTC ---
No response by debian-gcc on Debian bts #678589 so far...  Closing this bug.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[jrnieder at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #13 from Jonathan Nieder <jrnieder at gmail dot com> 2012-07-01 22:39:31 UTC ---
(In reply to comment #12)
> No response by debian-gcc on Debian bts #678589 so far...  Closing this bug.

Shouldn't it at least be documented somewhere so we don't get piles of
duplicate reports? (Not to mention making the lives of people building
glibc a little better.)

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #14 from Daniel Schepler <dschepler at gmail dot com> 2012-07-06 23:01:16 UTC ---
Created attachment 6512
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6512
Minimal file, does show the problem

I've found a reduced test case which does show the failure on Debian gcc.  It
seems the previous inline definition is crucial to reproducing the failure.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[dschepler at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #15 from Daniel Schepler <dschepler at gmail dot com> 2012-07-07 00:36:24 UTC ---
FYI: I found that the Debian GCC patch causing this failure was a proposed
patch from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33763#c31 .

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[jrnieder at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

Jonathan Nieder <jrnieder at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |
           Severity|normal                      |enhancement

--- Comment #16 from Jonathan Nieder <jrnieder at gmail dot com> 2012-10-03 03:34:39 UTC ---
Build still fails but doesn't seem to be documented at
<http://sourceware.org/glibc/wiki/Release/2.16>, so reopening. If it's not easy
to avoid tickling this gcc bug, maybe configure could check for it and error
out early.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[aj at suse dot de]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

Andreas Jaeger <aj at suse dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |WONTFIX

--- Comment #17 from Andreas Jaeger <aj at suse dot de> 2012-11-16 11:09:40 UTC ---
GCC has now a patch committed that handles this situation correctly.

I ask Debian to update their compiler and replace the buggy patch with a fixed
one and close this bug as WONTFIX since it's a bug in a distribution specific
compiler that shouuld be fixed with an updated compiler.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[jrnieder at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14281

--- Comment #18 from Jonathan Nieder <jrnieder at gmail dot com> 2012-11-16 15:25:56 UTC ---
(In reply to comment #17)
> GCC has now a patch committed that handles this situation correctly.
> 
> I ask Debian to update their compiler and replace the buggy patch with a fixed
> one

The compiler bugfix was merged into Debian's gcc-4.7 package (version 4.7.2-3)
on 6 October and enterered testing for Debian 7.0 (wheezy) yesterday. Previous
Debian releases don't have gcc 4.7, so I don't think anyone will be running
into this any more. Thanks, all.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[jackie.rosen at hushmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=14281

Jackie Rosen <jackie.rosen at hushmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jackie.rosen at hushmail dot com

--- Comment #19 from Jackie Rosen <jackie.rosen at hushmail dot com> ---
*** Bug 260998 has been marked as a duplicate of this bug. ***
Seen from the domain http://volichat.com
Page where seen: http://volichat.com/adult-chat-rooms
Marked for reference. Resolved as fixed @bugzilla.

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[schwab at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=14281

Andreas Schwab <schwab at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|jackie.rosen at hushmail dot com   |

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[Bug math/14281] Build error on Debian unstable using gcc 4.7.1

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=14281

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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