B_THREAD_DEBUG_POST_SYSCALL
threadDebugFlags = B_THREAD_DEBUG_PRE_SYSCALL | B_THREAD_DEBUG_POST_SYSCALL
|| (threadDebugFlags & B_THREAD_DEBUG_POST_SYSCALL)) {
&& !(threadDebugFlags & B_THREAD_DEBUG_POST_SYSCALL)) {
| B_THREAD_DEBUG_POST_SYSCALL);