/* SIG_STOP_FOR_GC must be unblocked: else two threads racing here
* may deadlock: one will wait on the GC lock, and the other
* cannot stop the first one... */
check_gc_signals_unblocked_or_lose(0);
/* SIG_STOP_FOR_GC must be unblocked: else two threads racing here
* may deadlock: one will wait on the GC lock, and the other
* cannot stop the first one... */
check_gc_signals_unblocked_or_lose(0);