1 files changed, 88 insertions, 0 deletions
diff --git a/bin/tests/optional/backtrace_test.c b/bin/tests/optional/backtrace_test.c
new file mode 100644
index 0000000..2aa7979
--- /dev/null
+++ b/bin/tests/optional/backtrace_test.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <isc/backtrace.h>
+#include <isc/print.h>
+#include <isc/result.h>
+
+const char *expected_symbols[] = { "func3", "func2", "func1", "main" };
+
+static int
+func3() {
+	void *tracebuf[16];
+	int i, nframes;
+	int error = 0;
+	const char *fname;
+	isc_result_t result;
+	unsigned long offset;
+
+	result = isc_backtrace_gettrace(tracebuf, 16, &nframes);
+	if (result != ISC_R_SUCCESS) {
+		printf("isc_backtrace_gettrace failed: %s\n",
+		       isc_result_totext(result));
+		return (1);
+	}
+
+	if (nframes < 4) {
+		error++;
+	}
+
+	for (i = 0; i < 4 && i < nframes; i++) {
+		fname = NULL;
+		result = isc_backtrace_getsymbol(tracebuf[i], &fname, &offset);
+		if (result != ISC_R_SUCCESS) {
+			error++;
+			continue;
+		}
+		if (strcmp(fname, expected_symbols[i]) != 0) {
+			error++;
+		}
+	}
+
+	if (error) {
+		printf("Unexpected result:\n");
+		printf("  # of frames: %d (expected: at least 4)\n", nframes);
+		printf("  symbols:\n");
+		for (i = 0; i < nframes; i++) {
+			fname = NULL;
+			result = isc_backtrace_getsymbol(tracebuf[i], &fname,
+							 &offset);
+			if (result == ISC_R_SUCCESS) {
+				printf("  [%d] %s\n", i, fname);
+			} else {
+				printf("  [%d] %p getsymbol failed: %s\n", i,
+				       tracebuf[i], isc_result_totext(result));
+			}
+		}
+	}
+
+	return (error);
+}
+
+static int
+func2() {
+	return (func3());
+}
+
+static int
+func1() {
+	return (func2());
+}
+
+int
+main() {
+	return (func1());
+}