I am attempting to use -fsanitize=thread but am getting an error one of a two ways: Way 1: g++ dummy.cpp -g -fsanitize=thread -pthread -shared -fPIC This compiles just fine, and claims it links fine, but in reality, it just sits at 0 and then segfaults at start (options determined by following error messages) Way 2: g++ dummy.cpp -g -fsanitize=thread -pthread -pie -fPIC /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../lib64/libasan_preinit.o:(.preinit_array+0x0): undefined reference to `__asan_init_v1' collect2: error: ld returned 1 exit status The program compiles just fine with g++ dummpy.cpp Is this problem related to the fact that gcc seems to think that it is running on "unknown linux" as opposed to "linux-gnu"? If so, how can I fix that issue (setting --target=x86_64-linux-gnu configurers just fine but fails to build, even after make distclean)? uname returns: daniel@daniel-Virtual-Machine:~$ uname -a Linux daniel-Virtual-Machine 3.2.0-38-generic #61-Ubuntu SMP Tue Feb 19 12:18:21 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux gcc --v: daniel@daniel-Virtual-Machine:~$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../SomeLocalDir/configure --enable-languages=c,c++ Thread model: posix gcc version 4.8.0 20130305 (experimental) (GCC)
