LLVM Discussion Forums

Missing tests for sanitizers in LLVM 10.0.0 (and potentially more versions)

I’m trying to run the ASan tests with make check-asan as described in the docs here: https://clang.llvm.org/docs/AddressSanitizer.html

I’ve built LLVM from a git checkout llvmorg-10.0.0 with cmake -G "Unix Makefiles" -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=Release

The check-asan and check-sanitizers make targets do not exist when built with this configuration – this seems like a bug?

These targets are present when you’re building the sanitizer runtime itself (see compiler-rt/test/asan/CMakeLists.txt). Your cmake invocation will only build LLVM, try to pass -DLLVM_ENABLE_PROJECTS=compiler-rt to cmake to enable building the runtime.

Hi Mehdi, thanks for the response! I was assuming that the default build when you don’t specify specific components would include the compiler runtime (I guess I thought that since it seems to include clang). That’s working now though, thank you.

[Edit]
Just for posterity in case anyone ends up here with the same question, if you enable specific subprojects with -DLLVM_ENABLE_PROJECTS it will override the defaults for that CMake parameter, so to avoid errors about clang components being missing it’s necessary to say -DLLVM_ENABLE_PROJECTS=compiler-rt;clang

Clang isn’t enabled by default either I believe: only LLVM alone is the default.