Hi, I've currently adding support to QEMU for building with the various sanitizers in later GCC's. I've had to replace QEMU's atomic_read implementation with one that explicitly uses the GCC built-in to avoid a number of false positives. However I'd like that change to only be done when building a sanitized build. The manual implies you can do: #if __has_feature(thread_sanitizer) But AFAICT this doesn't work under GCC as it seems to be a clang-ism. Is there an equivalent for GCC? -- Alex Bennée
