1 files changed, 87 insertions, 0 deletions
diff --git a/src/runtime/testdata/testprogcgo/sigfwd.go b/src/runtime/testdata/testprogcgo/sigfwd.go
new file mode 100644
index 0000000..f6a0c03
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/sigfwd.go
@@ -0,0 +1,87 @@
+// 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()
+}