afl-gotcpu disable thread_affinity api on macos arm64.
@@ -174,7 +174,12 @@ int main(int argc, char **argv) {
if (c == NULL) PFATAL("cpuset_create failed");
cpuset_set(i, c);
- #elif defined(__APPLE__)
+ #elif defined(__APPLE__) && defined(__x86_64__)
+ // the api is not workable on arm64, core's principle
+ // differs significantly hive of core per type vs individual ones.
+ // Possible TODO: For arm64 is to slightly change the meaning
+ // of gotcpu since it makes no sense on this platform
+ // but rather just displaying current policy ?
thread_affinity_policy_data_t c = {i};
thread_port_t native_thread = pthread_mach_thread_np(pthread_self());
if (thread_policy_set(native_thread, THREAD_AFFINITY_POLICY,
