[Bug bootstrap/53396] New: [4.8 Regression] revision 187631 breaks bootstrap on x86_64-apple-darwin10

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53396

             Bug #: 53396
           Summary: [4.8 Regression] revision 187631 breaks bootstrap on
                    x86_64-apple-darwin10
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr
                CC: hubicka@gcc.gnu.org


On x86_64-apple-darwin10 bootstrap is broken by revision 187631 (a clean
bootstrap of r187630 did succeed):

/bin/sh ../../libtool --tag CXX --tag disable-shared   --mode=compile
/opt/gcc/build_w/./gcc/xgcc -shared-libgcc -B/opt/gcc/build_w/./gcc -nostdinc++
-L/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/src
-L/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/src/.libs
-B/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/bin/
-B/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/lib/ -isystem
/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/include -isystem
/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/sys-include   
-I/opt/gcc/_clean/libstdc++-v3/../libgcc
-I/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/include/x86_64-apple-darwin10.8.0
-I/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/include
-I/opt/gcc/_clean/libstdc++-v3/libsupc++  -prefer-pic -fno-implicit-templates
-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi 
-fdiagnostics-show-location=once  -fvisibility-inlines-hidden
-ffunction-sections -fdata-sections  -frandom-seed=ios_init.lo -g -O2 -c -o
ios_init.lo ../../../../../_clean/libstdc++-v3/src/c++98/ios_init.cc
libtool: compile:  /opt/gcc/build_w/./gcc/xgcc -shared-libgcc
-B/opt/gcc/build_w/./gcc -nostdinc++
-L/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/src
-L/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/src/.libs
-B/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/bin/
-B/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/lib/ -isystem
/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/include -isystem
/opt/gcc/gcc4.8w/x86_64-apple-darwin10.8.0/sys-include
-I/opt/gcc/_clean/libstdc++-v3/../libgcc
-I/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/include/x86_64-apple-darwin10.8.0
-I/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/include
-I/opt/gcc/_clean/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra
-Wwrite-strings -Wcast-qual -Wabi -fdiagnostics-show-location=once
-fvisibility-inlines-hidden -ffunction-sections -fdata-sections
-frandom-seed=ios_init.lo -g -O2 -c
../../../../../_clean/libstdc++-v3/src/c++98/ios_init.cc  -fno-common -DPIC -o
ios_init.o
_ZN9__gnu_cxx18stdio_sync_filebufIwSt11char_traitsIwEED1Ev/366 (virtual
__gnu_cxx::stdio_sync_filebuf<wchar_t>::~stdio_sync_filebuf()) @0x1027ac270
  Type: function
  Visibility: public weak comdat
comdat_group:_ZN9__gnu_cxx18stdio_sync_filebufIwSt11char_traitsIwEED1Ev
one_only visibility_specified virtual artificial
  Address is taken.
  References: 
  Referring: _ZTVN9__gnu_cxx18stdio_sync_filebufIwSt11char_traitsIwEEE/323
(addr)
  Availability: not_available
  Function flags: body finalized
  Called by: 
  Calls: 
In file included from
../../../../../_clean/libstdc++-v3/src/c++98/ios_init.cc:36:0:
/opt/gcc/build_w/x86_64-apple-darwin10.8.0/libstdc++-v3/include/ext/stdio_sync_filebuf.h:57:11:
internal compiler error: failed to reclaim unneeded function
     class stdio_sync_filebuf : public std::basic_streambuf<_CharT, _Traits>
           ^
Note that this pr may be a duplicate of pr53393.