[Bug middle-end/50137] New: [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on powerpc-apple-darwin9 since revision 177691

[Bug middle-end/50137] New: [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on powerpc-apple-darwin9 since revision 177691

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50137

             Bug #: 50137
           Summary: [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on
                    powerpc-apple-darwin9 since revision 177691
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr
                CC: dnovillo@google.com, iains@gcc.gnu.org,
                    rguenther@suse.de
              Host: powerpc-apple-darwin9
            Target: powerpc-apple-darwin9
             Build: powerpc-apple-darwin9


On powerpc-apple-darwin9 after revision 177691, I get the following failures in
the libstdc++-v3 test suite with -m64:

Running target unix/-m64
FAIL: 22_locale/money_get/get/char/19.cc execution test
FAIL: 22_locale/money_get/get/char/38399.cc execution test
FAIL: 22_locale/money_get/get/char/39168.cc execution test
FAIL: 22_locale/money_get/get/wchar_t/19.cc execution test
FAIL: 22_locale/money_get/get/wchar_t/38399.cc execution test
FAIL: 22_locale/money_get/get/wchar_t/39168.cc execution test
FAIL: 22_locale/num_get/get/char/10.cc execution test
FAIL: 22_locale/num_get/get/char/12.cc execution test
FAIL: 22_locale/num_get/get/char/15.cc execution test
FAIL: 22_locale/num_get/get/char/22131.cc execution test
FAIL: 22_locale/num_get/get/char/39168.cc execution test
FAIL: 22_locale/num_get/get/char/7.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/10.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/12.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/15.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/22131.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/39168.cc execution test
FAIL: 22_locale/num_get/get/wchar_t/7.cc execution test
FAIL: 22_locale/time_get/get_date/char/1.cc execution test
FAIL: 22_locale/time_get/get_date/char/12791.cc execution test
FAIL: 22_locale/time_get/get_date/wchar_t/1.cc execution test
FAIL: 22_locale/time_get/get_date/wchar_t/12791.cc execution test
FAIL: 22_locale/time_get/get_monthname/char/1.cc execution test
FAIL: 22_locale/time_get/get_monthname/wchar_t/1.cc execution test
FAIL: 22_locale/time_get/get_time/char/4.cc execution test
FAIL: 22_locale/time_get/get_time/wchar_t/4.cc execution test
FAIL: 22_locale/time_get/get_weekday/char/1.cc execution test
FAIL: 22_locale/time_get/get_weekday/wchar_t/1.cc execution test
FAIL: 22_locale/time_get/get_year/char/1.cc execution test
FAIL: 22_locale/time_get/get_year/wchar_t/1.cc execution test
FAIL: ext/mt_allocator/deallocate_global_thread-1.cc execution test
FAIL: ext/mt_allocator/deallocate_global_thread-3.cc execution test

        === libstdc++ Summary ===

# of expected passes        7201
# of unexpected failures    32
# of expected failures        46
# of unsupported tests        723

Reverting revision 177691 gives

Running target unix/-m64
FAIL: ext/mt_allocator/deallocate_global_thread-1.cc execution test
FAIL: ext/mt_allocator/deallocate_global_thread-3.cc execution test

        === libstdc++ Summary ===

# of expected passes        7231
# of unexpected failures    2
# of expected failures        46
# of unsupported tests        723

Compiler version: 4.7.0 20110818 (experimental) [trunk revision 177878p2] (GCC) 
Platform: powerpc-apple-darwin9.8.0
configure flags: --prefix=/opt/gcc/gcc4.7w
--enable-languages=c,c++,fortran,objc,obj-c++,java,lto --with-gmp=/sw
--with-libiconv-prefix=/usr --with-system-zlib --with-cloog=/sw --enable-lto
--enable-cloog-backend=isl

(where the last two failures are pr47762).

Note that I have to rebuild ppc64/libstdc++-v3 to see the failures disappear;
this is why I think the library is miscompiled.

Would it be possible to infer from the failures what is (are) the file(s) that
is (are) miscompiled?

[Bug middle-end/50137] [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on powerpc-apple-darwin9 since revision 177691

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50137

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0

[Bug middle-end/50137] [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on powerpc-apple-darwin9 since revision 177691

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50137

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paolo.carlini at oracle dot
                   |                            |com

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-08-29 14:50:29 UTC ---
Still there at revision 178145 (see
http://gcc.gnu.org/ml/gcc-testresults/2011-08/msg03312.html ).

[Bug middle-end/50137] [4.7 Regression] ppc64/libstdc++-v3 is miscompiled on powerpc-apple-darwin9 since revision 177691

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50137

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-09-14 18:01:25 UTC ---
This pr is fixed with the patch in
http://gcc.gnu.org/bugzilla/attachment.cgi?id=25270 (pr50325 comment #5).
Marking as a duplicate.

*** This bug has been marked as a duplicate of bug 50325 ***