// first call on an M, until that libcCall instance
		// returns.  Reentrance only matters for signals, as
		// libc never calls back into Go.  The tricky case is
		// where we call libcX from an M and record g/pc/sp.
		// Before that call returns, a signal arrives on the
		// same M and the signal handling code calls another
		// libc function.  We don't want that second libcCall

			// We're no longer on g's stack, so we must be handling a signal.  It's
			// possible that we interrupted the thread during a transition between g
			// and g0, so we should stay on the current stack to avoid corrupting g0.
			ret = callCgoSigaction(uintptr(sig), new, old)
		default:
			// We're running on g's stack, so either we're not in a signal handler or
			// the signal handler has set the correct g.  If we're on gsignal or g0,

	return false
}

// terminationSignal returns -1 and false because Windows doesn't have signals.
func terminationSignal(err error) (os.Signal, bool) {
	return syscall.Signal(-1), false
}

// isCrashSignal is not implemented because Windows doesn't have signals.
func isCrashSignal(signal os.Signal) bool {
	panic("not implemented: no signals on windows")

			t.Errorf("pipe write failed: %d", n)
		}
	})
	defer timer.Stop()

	wg.Wait()
	if got == -1 {
		t.Fatal("signalM signal not received")
	} else if want != got {
		t.Fatalf("signal sent to M %d, but received on M %d", want, got)
	}

// created thread. On NetBSD, a new thread inherits the signal stack
// of the creating thread. That confuses minit, so we remove that
// signal stack here before calling the regular mstart. It's a bit
// baroque to remove a signal stack here only to add one in minit, but
// it's a simple change that keeps NetBSD working like other OS's.
// At this point all signals are blocked, so there is no race.
//
//go:nosplit

# FuzzKill sends itself a signal that cannot be caught by the worker process
# and does not appear to be a crash.
# We should not save a crasher.
! go test -fuzz=FuzzKill
! exists testdata
! stdout unreachable
! stderr unreachable
stdout 'fuzzing process terminated by unexpected signal; no crash will be recorded: signal: killed'

			res = "exit status " + itoa.Uitox(uint(code))
		} else { // unix systems use small decimal integers
			res = "exit status " + itoa.Itoa(code) // unix
		}
	case status.Signaled():
		res = "signal: " + status.Signal().String()
	case status.Stopped():
		res = "stop signal: " + status.StopSignal().String()
		if status.StopSignal() == syscall.SIGTRAP && status.TrapCause() != 0 {
			res += " (trap " + itoa.Itoa(status.TrapCause()) + ")"
		}

//go:build !plan9 && !windows
// +build !plan9,!windows

package main

/*
#include <stddef.h>
#include <signal.h>
#include <pthread.h>

// Save the signal mask at startup so that we see what it is before
// the Go runtime starts setting up signals.

static sigset_t mask;

static void init(void) __attribute__ ((constructor));

static void init() {
	sigemptyset(&mask);

	MOVQ	R12, SP		// Restore real SP

	// Restore vdsoPC, vdsoSP
	// We don't worry about being signaled between the two stores.
	// If we are not in a signal handler, we'll restore vdsoSP to 0,
	// and no one will care about vdsoPC. If we are in a signal handler,
	// we cannot receive another signal.
	MOVQ	8(SP), SI
	MOVQ	SI, m_vdsoSP(BX)
	MOVQ	0(SP), SI
	MOVQ	SI, m_vdsoPC(BX)

import org.gradle.internal.scan.UsedByScanPlugin;

/**
 * A listener to notifications about build events.
 *
 * Implementations are thread safe and can be signalled concurrently.
 * However, a finished signal must not be emitted before the signal of the
 * corresponding started event has returned.
 *
 * Implementations may retain the notification values beyond the method that passed them.