GCC 4.3 on OSX 10.10

/bin/sh ../libtool --tag=CXX   --mode=compile /private/tmp/gcc48-txUxoL/gcc-4.8.3/build/./gcc/xgcc -shared-libgcc -B/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/./gcc -nostdinc++ -L/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/x86_64-apple-darwin14.0.0/i386/libstdc++-v3/src -L/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/x86_64-apple-darwin14.0.0/i386/libstdc++-v3/src/.libs -B/usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/bin/ -B/usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/lib/ -isystem /usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/include -isystem /usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/sys-include  -m32 -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DASAN_HAS_EXCEPTIONS=1 -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0 -DASAN_NEEDS_SEGV=1 -DMAC_INTERPOSE_FUNCTIONS -DMISSING_BLOCKS_SUPPORT -I. -I../../../../../libsanitizer/asan  -I ../../../../../libsanitizer/include -I ../../../../../libsanitizer  -Wall -W -Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include     -I../../libstdc++-v3/include/x86_64-apple-darwin14.0.0     -I../../../../../libsanitizer/../libstdc++-v3/libsupc++ -g -O2  -m32 -MT asan_malloc_mac.lo -MD -MP -MF .deps/asan_malloc_mac.Tpo -c -o asan_malloc_mac.lo ../../../../../libsanitizer/asan/asan_malloc_mac.cc
In file included from ../../../../../libsanitizer/asan/asan_flags.h:16:0,
                 from ../../../../../libsanitizer/asan/asan_internal.h:15,
                 from ../../../../../libsanitizer/asan/asan_allocator.h:16,
                 from ../../../../../libsanitizer/asan/asan_allocator2.cc:16:
../../../../../libsanitizer/asan/asan_allocator2.cc: In function 'void* __asan::Reallocate(void*, __sanitizer::uptr, __sanitizer::StackTrace*)':
../../../../../libsanitizer/asan/asan_allocator2.cc:486:27: warning: the address of 'void* memcpy(void*, const void*, __sanitizer::uptr)' will never be NULL [-Waddress]
     CHECK(REAL(memcpy) != 0);
                           ^
../../../../../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33: note: in definition of macro 'CHECK_IMPL'
     __sanitizer::u64 v1 = (u64)(c1); \
                                 ^
../../../../../libsanitizer/asan/asan_allocator2.cc:486:5: note: in expansion of macro 'CHECK'
     CHECK(REAL(memcpy) != 0);
     ^
../../../../../libsanitizer/asan/asan_mac.cc: In function 'void __asan::GetPcSpBp(void*, __sanitizer::uptr*, __sanitizer::uptr*, __sanitizer::uptr*)':
../../../../../libsanitizer/asan/asan_mac.cc:47:32: error: 'struct mcontext32' has no member named '__ss'
   *pc = ucontext->uc_mcontext->__ss.__eip;
                                ^
../../../../../libsanitizer/asan/asan_mac.cc:48:32: error: 'struct mcontext32' has no member named '__ss'
   *bp = ucontext->uc_mcontext->__ss.__ebp;
                                ^
../../../../../libsanitizer/asan/asan_mac.cc:49:32: error: 'struct mcontext32' has no member named '__ss'
   *sp = ucontext->uc_mcontext->__ss.__esp;
                                ^
../../../../../libsanitizer/asan/asan_mac.cc: At global scope:
../../../../../libsanitizer/asan/asan_mac.cc:308:6: warning: always_inline function might not be inlinable [-Wattributes]
 void asan_register_worker_thread(int parent_tid, StackTrace *stack) {
      ^
libtool: compile:  /private/tmp/gcc48-txUxoL/gcc-4.8.3/build/./gcc/xgcc -shared-libgcc -B/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/./gcc -nostdinc++ -L/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/x86_64-apple-darwin14.0.0/i386/libstdc++-v3/src -L/private/tmp/gcc48-txUxoL/gcc-4.8.3/build/x86_64-apple-darwin14.0.0/i386/libstdc++-v3/src/.libs -B/usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/bin/ -B/usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/lib/ -isystem /usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/include -isystem /usr/local/Cellar/gcc48/4.8.3/x86_64-apple-darwin14.0.0/sys-include -m32 -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DASAN_HAS_EXCEPTIONS=1 -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0 -DASAN_NEEDS_SEGV=1 -DMAC_INTERPOSE_FUNCTIONS -DMISSING_BLOCKS_SUPPORT -I. -I../../../../../libsanitizer/asan -I ../../../../../libsanitizer/include -I ../../../../../libsanitizer -Wall -W -Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include -I../../libstdc++-v3/include/x86_64-apple-darwin14.0.0 -I../../../../../libsanitizer/../libstdc++-v3/libsupc++ -g -O2 -m32 -MT asan_malloc_mac.lo -MD -MP -MF .deps/asan_malloc_mac.Tpo -c ../../../../../libsanitizer/asan/asan_malloc_mac.cc  -fno-common -DPIC -o .libs/asan_malloc_mac.o
xgcc: warning: couldn't understand kern.osversion '14.0.0
make[7]: *** [asan_mac.lo] Error 1
make[7]: *** Waiting for unfinished jobs....
../../../../../libsanitizer/asan/asan_malloc_mac.cc:187:20: warning: always_inline function might not be inlinable [-Wattributes]
 void ALWAYS_INLINE free_common(void *context, void *ptr) {
                    ^
mv -f .deps/asan_malloc_mac.Tpo .deps/asan_malloc_mac.Plo
mv -f .deps/asan_interceptors.Tpo .deps/asan_interceptors.Plo
mv -f .deps/asan_allocator2.Tpo .deps/asan_allocator2.Plo
make[6]: *** [all-recursive] Error 1
make[5]: *** [multi-do] Error 1
make[4]: *** [all-multi] Error 2
make[3]: *** [all-recursive] Error 1
make[2]: *** [all-stage1-target-libsanitizer] Error 2
make[1]: *** [stage1-bubble] Error 2
make: *** [bootstrap] Error 2