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// 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()
}