[Bug libstdc++/21677] New: simply including ext/bitmap_allocator.h causes link-time errors

[oms at home dot nl]

Compiling the two following trivial files together causes link-time errors due
to multiply-defined symbols in bitmap_allocator.h. What am I missing here?

// t.cc
#include <ext/bitmap_allocator.h>

int main ()
{
}
// EOF
// t1.cc
#include <ext/bitmap_allocator.h>
// EOF


$ /usr/local/gcc-3.4.4/bin/g++ -v -save-temps t.cc t1.cc
Reading specs from
/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/specs
Configured with: ../configure --prefix=/usr/local/gcc-3.4.4
--enable-threads=posix --enable-version-specific-runtime-libs
--enable-languages=c,c++,f77
Thread model: posix
gcc version 3.4.4
 /usr/local0/gcc-3.4.4/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.4/cc1plus -E
-quiet -v -iprefix /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/
-D_GNU_SOURCE t.cc -mtune=pentiumpro -o t.ii
ignoring nonexistent directory
"/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/include"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/i686-pc-linux-gnu"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/backward"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include"
ignoring nonexistent directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/i686-pc-linux-gnu
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/backward
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include
 /usr/local/include
 /usr/local/gcc-3.4.4/include
 /usr/include
End of search list.
 /usr/local0/gcc-3.4.4/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.4/cc1plus
-fpreprocessed t.ii -quiet -dumpbase t.cc -mtune=pentiumpro -auxbase t -version
-o t.s
GNU C++ version 3.4.4 (i686-pc-linux-gnu)
        compiled by GNU C version 3.4.4.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 as -V -Qy -o t.o t.s
GNU assembler version 2.15 (i386-linux) using BFD version 2.15
 /usr/local0/gcc-3.4.4/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.4/cc1plus -E
-quiet -v -iprefix /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/
-D_GNU_SOURCE t1.cc -mtune=pentiumpro -o t1.ii
ignoring nonexistent directory
"/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/include"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/i686-pc-linux-gnu"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/backward"
ignoring duplicate directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/include"
ignoring nonexistent directory
"/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/i686-pc-linux-gnu
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include/c++/backward
 /usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/include
 /usr/local/include
 /usr/local/gcc-3.4.4/include
 /usr/include
End of search list.
 /usr/local0/gcc-3.4.4/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.4/cc1plus
-fpreprocessed t1.ii -quiet -dumpbase t1.cc -mtune=pentiumpro -auxbase t1
-version -o t1.s
GNU C++ version 3.4.4 (i686-pc-linux-gnu)
        compiled by GNU C version 3.4.4.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 as -V -Qy -o t1.o t1.s
GNU assembler version 2.15 (i386-linux) using BFD version 2.15
 /usr/local0/gcc-3.4.4/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.4/collect2
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o
/usr/lib/crti.o
/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/crtbegin.o
-L/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4
-L/usr/local0/gcc-3.4.4/bin/../lib/gcc
-L/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4
-L/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/../../..
-L/usr/local/gcc-3.4.4/lib/gcc/i686-pc-linux-gnu/3.4.4/../../.. t.o t1.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/local0/gcc-3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/crtend.o
/usr/lib/crtn.o
t1.o(.bss+0x0): multiple definition of `__gnu_cxx::_OOM_handler::_S_old_handler'
t.o(.bss+0x0): first defined here
t1.o(.bss+0x4): multiple definition of `__gnu_cxx::_OOM_handler::_S_handled_oom'
t.o(.bss+0x4): first defined here
t1.o(.bss+0x8): multiple definition of `__gnu_cxx::_OOM_handler::_S_oom_fcp'
t.o(.bss+0x8): first defined here
t1.o(.bss+0xc): multiple definition of
`__gnu_cxx::_BA_free_list_store::_S_bfl_mutex'
t.o(.bss+0xc): first defined here
t1.o(.bss+0x24): multiple definition of
`__gnu_cxx::_BA_free_list_store::_S_free_list'
t.o(.bss+0x24): first defined here
collect2: ld returned 1 exit status

-- 
           Summary: simply including ext/bitmap_allocator.h causes link-time
                    errors
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: oms at home dot nl
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21677