HelenOS sources

fibril_exit       156 uspace/lib/c/generic/thread/fibril.c 	fibril_exit(fibril->func(fibril->arg));
fibril_exit        74 uspace/lib/c/include/fibril.h extern __noreturn void fibril_exit(long);
fibril_exit        74 uspace/lib/posix/include/libc/fibril.h extern __noreturn void fibril_exit(long);