/* 40 */ {_SigNotify, "signal 40"},
	/* 41 */ {_SigNotify, "signal 41"},
	/* 42 */ {_SigNotify, "signal 42"},
	/* 43 */ {_SigNotify, "signal 43"},
	/* 44 */ {_SigNotify, "signal 44"},
	/* 45 */ {_SigNotify, "signal 45"},
	/* 46 */ {_SigNotify, "signal 46"},
	/* 47 */ {_SigNotify, "signal 47"},
	/* 48 */ {_SigNotify, "signal 48"},
	/* 49 */ {_SigNotify, "signal 49"},
	/* 50 */ {_SigNotify, "signal 50"},

	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

	// We don't know which thread the fatal signal will land on, but we can still check for basics:
	//
	// 1. A frame in the signal handler: runtime.sigtramp
	// 2. GDB detection of the signal handler: <signal handler called>
	// 3. A frame before the signal handler: this could be foo, or somewhere in the scheduler

	re := regexp.MustCompile(`#.* runtime\.sigtramp `)

	SIGTERM     = Signal(0xf)
	SIGTRAP     = Signal(0x5)
	SIGTSTP     = Signal(0x12)
	SIGTTIN     = Signal(0x15)
	SIGTTOU     = Signal(0x16)
	SIGURG      = Signal(0x10)
	SIGUSR1     = Signal(0x1e)
	SIGUSR2     = Signal(0x1f)
	SIGVIRT     = Signal(0x25)
	SIGVTALRM   = Signal(0x22)
	SIGWAITING  = Signal(0x27)
	SIGWINCH    = Signal(0x1c)
	SIGXCPU     = Signal(0x18)
	SIGXFSZ     = Signal(0x19)
)

// misuse of unbuffered signal as argument to signal.Notify.
//
// # Analyzer sigchanyzer
//
// sigchanyzer: check for unbuffered channel of os.Signal
//
// This checker reports call expression of the form
//
//	signal.Notify(c <-chan os.Signal, sig ...os.Signal),
//
// where c is an unbuffered channel, which can be at risk of missing the signal.

        when:
        contendedAction.accept(signal)

        then:
        1 * lock.close()
        1 * signal.trigger()
        0 * _
    }

    def "releases retained lock at completion of action on contention"() {
        def action = Mock(Supplier)
        def lock = Mock(FileLock)
        def signal = Mock(FileLockReleasedSignal)
        Consumer contendedAction

        when:

		notetsleepg(&sig.note, -1)
	}
}

// signalWaitUntilIdle waits until the signal delivery mechanism is idle.
// This is used to ensure that we do not drop a signal notification due
// to a race between disabling a signal and receiving a signal.
// This assumes that signal delivery has already been disabled for
// the signal(s) in question, and here we are just waiting to make sure

handler.

Go code built with -buildmode=c-archive or -buildmode=c-shared will
not install any other signal handlers by default. If there is an
existing signal handler, the Go runtime will turn on the SA_ONSTACK
flag and otherwise keep the signal handler. If Notify is called for an
asynchronous signal, a Go signal handler will be installed for that
signal. If, later, Reset is called for that signal, the original

		return 2;
	}
	// gccgo does not set SA_ONSTACK for SIGSEGV.
	if (getenv("GCCGO") == NULL && (osa.sa_flags&SA_ONSTACK) == 0) {
		fprintf(stderr, "Go runtime did not install signal handler\n");
		return 2;
	}
	oldHandler = osa.sa_sigaction;

	return 0;
}

int check_handler() {
	if (sigaction(SIGSEGV, NULL, &sa) < 0) {
		perror("sigaction check");
		return 2;
	}
	if (sa.sa_sigaction != handler) {

// This is in testprognet instead of testprog because testprog
// must not import anything (like net, but also like os/signal)
// that kicks off background goroutines during init.

package main

import (
	"fmt"
	"os"
	"os/exec"
	"os/signal"
	"sync"
	"syscall"
	"time"
)

func init() {
	register("SignalDuringExec", SignalDuringExec)
	register("Nop", Nop)
}

	SIGPROF   = Signal(0x1b)
	SIGPWR    = Signal(0x1e)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTKFLT = Signal(0x10)
	SIGSTOP   = Signal(0x13)
	SIGSYS    = Signal(0x1f)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x14)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGUNUSED = Signal(0x1f)
	SIGURG    = Signal(0x17)
	SIGUSR1   = Signal(0xa)