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Current Path: /opt/golang/1.22.0/src/runtime/testdata/testprogcgo

opt / golang / 1.22.0 / src / runtime / testdata / testprogcgo /

📁 ..
📄 aprof.go(1.14 KB)
📄 aprof_c.c(217 B)
📄 bigstack1_windows.c(379 B)
📄 bigstack_windows.c(1.2 KB)
📄 bigstack_windows.go(586 B)
📄 bindm.c(692 B)
📄 bindm.go(1.2 KB)
📄 callback.go(1.86 KB)
📄 catchpanic.go(993 B)
📄 cgo.go(1.82 KB)
📄 cgonocallback.c(236 B)
📄 cgonocallback.go(629 B)
📄 cgonoescape.go(1.84 KB)
📄 crash.go(743 B)
📄 deadlock.go(509 B)
📄 destructor.c(459 B)
📄 destructor.go(442 B)
📄 dll_windows.go(459 B)
📄 dropm.go(1.05 KB)
📄 dropm_stub.go(336 B)
📄 eintr.go(5.17 KB)
📄 exec.go(2.1 KB)
📄 gprof.go(868 B)
📄 gprof_c.c(700 B)
📄 issue29707.go(1.15 KB)
📄 lockosthread.c(301 B)
📄 lockosthread.go(2.52 KB)
📄 main.go(651 B)
📄 needmdeadlock.go(1.83 KB)
📄 numgoroutine.go(1.91 KB)
📄 panic.c(239 B)
📄 panic.go(312 B)
📄 pprof.go(1.67 KB)
📄 pprof_callback.go(1.82 KB)
📄 raceprof.go(1.67 KB)
📄 racesig.go(1.67 KB)
📄 segv.go(525 B)
📄 segv_linux.go(546 B)
📄 sigfwd.go(1.58 KB)
📄 sigpanic.go(484 B)
📄 sigstack.go(2.09 KB)
📄 sigthrow.go(312 B)
📄 stack_windows.go(1.1 KB)
📄 stackswitch.c(3.88 KB)
📄 stackswitch.go(1.07 KB)
📄 threadpanic.go(428 B)
📄 threadpanic_unix.c(435 B)
📄 threadpanic_windows.c(435 B)
📄 threadpprof.go(2.54 KB)
📄 threadprof.go(2.41 KB)
📄 trace.go(1.15 KB)
📄 trace_unix.c(688 B)
📄 trace_windows.c(777 B)
📄 traceback.go(949 B)
📄 traceback_c.c(1.21 KB)
📄 tracebackctxt.go(2.85 KB)
📄 tracebackctxt_c.c(2.33 KB)
📁 windows

Editing: sigfwd.go

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix

package main

import (
	"fmt"
	"os"
)

/*
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

sig_atomic_t expectCSigsegv;
int *sigfwdP;

static void sigsegv() {
	expectCSigsegv = 1;
	*sigfwdP = 1;
	fprintf(stderr, "ERROR: C SIGSEGV not thrown on caught?.\n");
	exit(2);
}

static void segvhandler(int signum) {
	if (signum == SIGSEGV) {
		if (expectCSigsegv == 0) {
			fprintf(stderr, "SIGSEGV caught in C unexpectedly\n");
			exit(1);
		}
		fprintf(stdout, "OK\n");
		exit(0);  // success
	}
}

static void __attribute__ ((constructor)) sigsetup(void) {
	if (getenv("GO_TEST_CGOSIGFWD") == NULL) {
		return;
	}

struct sigaction act;

memset(&act, 0, sizeof act);
	act.sa_handler = segvhandler;
	sigaction(SIGSEGV, &act, NULL);
}
*/
import "C"

func init() {
	register("CgoSigfwd", CgoSigfwd)
}

var nilPtr *byte

func f() (ret bool) {
	defer func() {
		if recover() == nil {
			fmt.Fprintf(os.Stderr, "ERROR: couldn't raise SIGSEGV in Go\n")
			C.exit(2)
		}
		ret = true
	}()
	*nilPtr = 1
	return false
}

func CgoSigfwd() {
	if os.Getenv("GO_TEST_CGOSIGFWD") == "" {
		fmt.Fprintf(os.Stderr, "test must be run with GO_TEST_CGOSIGFWD set\n")
		os.Exit(1)
	}

// Test that the signal originating in Go is handled (and recovered) by Go.
	if !f() {
		fmt.Fprintf(os.Stderr, "couldn't recover from SIGSEGV in Go.\n")
		C.exit(2)
	}

// Test that the signal originating in C is handled by C.
	C.sigsegv()
}

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Editing: sigfwd.go

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