external: update backward-cpp to v1.4

rename the directory name to backward-cpp

Closes: #803
Signed-off-by: Shengjing Zhu <i@zhsj.me>

external/backward-cpp/test/_test_main.cpp

@@ -0,0 +1,146 @@
+/*
+ * _test_main.cpp
+ * Copyright 2013 Google Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "test.hpp"
+#include <cstdio>
+#include <cstdlib>
+#ifndef __APPLE__
+#include <error.h>
+#endif
+#include <unistd.h>
+#include <sys/wait.h>
+
+#ifdef __APPLE__
+#include <stdarg.h>
+
+void error(int status, int errnum, const char *format, ...) {
+	fflush(stdout);
+	fprintf(stderr, "%s: ", getprogname());
+
+	va_list args;
+	va_start(args, format);
+	vfprintf(stderr, format, args);
+	va_end(args);
+
+	if (errnum != 0) {
+		fprintf(stderr, ": %s\n", strerror(errnum));
+	} else {
+		fprintf(stderr, "\n");
+	}
+	if (status != 0) {
+		exit(status);
+	}
+}
+#endif
+
+test::test_registry_t test::test_registry;
+using namespace test;
+
+bool run_test(TestBase& test) {
+	printf("-- running test case: %s\n", test.name);
+
+	fflush(stdout);
+	pid_t child_pid = fork();
+	if (child_pid == 0) {
+		exit(static_cast<int>(test.run()));
+	}
+	if (child_pid == -1) {
+		error(EXIT_FAILURE, 0, "unable to fork");
+	}
+
+	int child_status = 0;
+	waitpid(child_pid, &child_status, 0);
+
+	test::TestStatus status;
+
+	if (WIFEXITED(child_status)) {
+		int exit_status = WEXITSTATUS(child_status);
+		if (exit_status & ~test::STATUS_MASK) {
+			status = test::FAILED;
+		} else {
+			status = static_cast<test::TestStatus>(exit_status);
+		}
+	} else if (WIFSIGNALED(child_status)) {
+		const int signum = WTERMSIG(child_status);
+		printf("!! signal (%d) %s\n", signum, strsignal(signum));
+		switch (signum) {
+			case SIGABRT:
+				status = test::SIGNAL_ABORT; break;
+			case SIGSEGV:
+			case SIGBUS:
+				status = test::SIGNAL_SEGFAULT; break;
+			case SIGFPE:
+				status = test::SIGNAL_DIVZERO; break;
+			default:
+				status = test::SIGNAL_UNCAUGHT;
+		}
+	} else {
+		status = test::SUCCESS;
+	}
+
+	if (test.expected_status == test::FAILED) {
+		return (status & test::FAILED);
+	}
+
+	if (test.expected_status == test::SIGNAL_UNCAUGHT) {
+		return (status & test::SIGNAL_UNCAUGHT);
+	}
+
+	return status == test.expected_status;
+}
+
+int main(int argc, const char* const argv[]) {
+
+	size_t success_cnt = 0;
+	size_t total_cnt = 0;
+	for (test_registry_t::iterator it = test_registry.begin();
+			it != test_registry.end(); ++it) {
+		TestBase& test = **it;
+
+		bool consider_test = (argc <= 1);
+		for (int i = 1; i < argc; ++i) {
+			if (strcasecmp(argv[i], test.name) == 0) {
+				consider_test = true;
+				break;
+			}
+		}
+		if (not consider_test) {
+			continue;
+		}
+
+		total_cnt += 1;
+		if (run_test(test)) {
+			printf("-- test case success: %s\n", test.name);
+			success_cnt += 1;
+		} else {
+			printf("** test case FAILED : %s\n", test.name);
+		}
+	}
+	printf("-- tests passing: %lu/%lu", success_cnt, total_cnt);
+	if (total_cnt) {
+		printf(" (%lu%%)\n", success_cnt * 100 / total_cnt);
+	} else {
+		printf("\n");
+	}
+	return (success_cnt == total_cnt) ? EXIT_SUCCESS : EXIT_FAILURE;
+}