what I observe is that if I use clang (instead of clang++) for the link step, I get a different error (undefined reference to symbol ___cxa_free_exception@@CXXABI_1.3). I thought, that clang++ is just a synonym for clang ? How does that magic happen ? Thanks again Peter
On 7 May 2014 11:08, Peter Caspers <pcaspers1...@gmail.com> wrote: > I tried the link step from the command line manually, but get the same > error messages. > In which library is __asan_memcpy expected to reside ? > Thanks > Peter > > On 6 May 2014 12:23, Jeffrey Walton <noloa...@gmail.com> wrote: >> On Tue, May 6, 2014 at 5:36 AM, Peter Caspers <pcaspers1...@gmail.com> wrote: >>> yes, I use clang with the sanitize option to link. I have the >>> following libs installed >>> >>> peter@peter-ThinkPad-W520:/usr/local/lib/clang/3.5.0/lib/linux$ ls >>> libclang_rt.asan-x86_64.a libclang_rt.lsan-x86_64.a >>> libclang_rt.san-x86_64.a libclang_rt.ubsan-x86_64.a >>> libclang_rt.dfsan-x86_64.a libclang_rt.msan-x86_64.a >>> libclang_rt.tsan-x86_64.a >>> libclang_rt.full-x86_64.a libclang_rt.profile-x86_64.a >>> libclang_rt.ubsan_cxx-x86_64.a >>> >>> You think that should work then ? >> How do you invoke Clang? Are the sanitizer flags part of CFLAGS and CXXFLAGS? >> >> Is this an Autools project? Sometimes you have to be creative with >> Autotools projects. For example, you might need to do: >> >> export CC="clang -fsanitize=undefined -fsanitize=address" >> export CXX="clang -fsanitize=undefined -fsanitize=address >> -fno-sanitize=vptr" >> >> That's because there will sometimes be a link line that *omits* CFLAGS >> and CXXFLAGS. For example: >> >> # Link using the compiler... >> $(CC) -o $(program_name) $(OBJECTS) $(LDFLAGS) $(LDLIBS) >> >> On Mac OS X, I also find I need to set DYLD_FALLBACK_LIBRARY_PATH >> before executing: >> >> export DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib/clang/3.4/lib/darwin/ >> ./my_program >> >> I don't recall doing similar on Linux. (But I may have done it and >> forgotten about it). >> >> Jeff _______________________________________________ cfe-users mailing list cfe-users@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/cfe-users
