Compile with ASAN/UBSAN?

[huitema]

Do we have a way to enable sanitizers when compiling picotls? I see the lines:

        SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=fuzzer-no-link")
        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=fuzzer-no-link")

in the file CMakeList.txt, but they are only used when building under a fuzzing environment.

I would like to build the library with the sanitizers turned on, so I could link it with picoquic and detect possible misuse of the picotls API when testing or fuzzing picoquic. Any suggestion?

[gfx]

Hello!

That's what I did recently for CI:

https://github.com/h2o/picotls/blob/2c46de3/.github/workflows/ci.yml#L23

i.e. passing these options to cmake:

cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_FLAGS=-fsanitize=address,undefined -DCMAKE_CXX_FLAGS=-fsanitize=address,undefined ...

BTW I recommend using clang with sanitizers because I've had troubles in the combination of GCC and ASan & UBSan (I didn't dig into the GCC + sanitizers' problem, though).

[huitema]

@gfx Thanks, that worked for me.