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Subject: [Bug c++/55325] New: [4.8 Regression]: g++.dg/cpp0x/constexpr-complex.C excess errors
Date: Wed, 14 Nov 2012 16:10:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55325

             Bug #: 55325
           Summary: [4.8 Regression]: g++.dg/cpp0x/constexpr-complex.C
                    excess errors
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
                CC: emsr@gcc.gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-axis-elf, sh4-linux, i686-linux, x86_64-linux


This test previously passed, now it fails.
A patch in the revision range (last_known_working:first_known_failing)
193374:193385
exposed or caused this regression.  Since then it fails as follows:

Running /tmp/hpautotest-gcc1/gcc/gcc/testsuite/g++.dg/dg.exp ...
...
FAIL: g++.dg/cpp0x/constexpr-complex.C (test for excess errors)


In g++.log for cris-elf:
Executing on host:
/tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/testsuite/g++/../../g++
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/testsuite/g++/../../
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/g++.dg/cpp0x/constexpr-complex.C 
-fno-diagnostics-show-caret  -nostdinc++
-I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/cris-elf
-I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include
-I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/libsupc++
-I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/include/backward
-I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 
-std=c++0x  -S   -isystem
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/hpautotest-gcc1/gcc/newlib/libc/include  -o constexpr-complex.s   
(timeout = 300)
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/g++.dg/cpp0x/constexpr-complex.C: In
constructor 'constexpr complex::complex(float, float)':
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/g++.dg/cpp0x/constexpr-complex.C:12:26:
error: unable to find numeric literal operator 'operator"" fi'

Looks like the regression is universal:
sh4-linux: <http://gcc.gnu.org/ml/gcc-testresults/2012-11/msg01164.html>
i686-linux: <http://gcc.gnu.org/ml/gcc-testresults/2012-11/msg01171.html>
x86_64-linux: <http://gcc.gnu.org/ml/gcc-testresults/2012-11/msg01173.html>

Author of suspect patch in revision range CC:ed.