[Bug bootstrap/54642] New: bootstrap broken using clang++

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54642

             Bug #: 54642
           Summary: bootstrap broken using clang++
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: howarth@nitro.med.uc.edu


At r191562, the bootstrap of gcc trunk is broken against clang++ from Xcode
4.5, llvm clang 3.1 and llvm clang svn with the build failure...

clang++ -c   -g -O2 -DIN_GCC   -fno-exceptions -fno-rtti -W -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
 -DHAVE_CONFIG_H -I. -I. -I../../gcc-4.8-20120920/gcc
-I../../gcc-4.8-20120920/gcc/. -I../../gcc-4.8-20120920/gcc/../include
-I../../gcc-4.8-20120920/gcc/../libcpp/include -I/sw/include -I/sw/include 
-I../../gcc-4.8-20120920/gcc/../libdecnumber
-I../../gcc-4.8-20120920/gcc/../libdecnumber/dpd -I../libdecnumber
-DCLOOG_INT_GMP -I/sw/include -I/sw/include -I/sw/include
../../gcc-4.8-20120920/gcc/lto-symtab.c -o lto-symtab.o
clang: error: treating 'c' input as 'c++' when in C++ mode, this behavior is
deprecated