1 files changed, 29 insertions, 2 deletions
diff --git a/common-main.c b/common-main.c
index 71e21dd20a..c531372f3f 100644
--- a/common-main.c
+++ b/common-main.c
@@ -26,6 +26,7 @@ static void restore_sigpipe_to_default(void)
 int main(int argc, const char **argv)
 {
 	int result;
+	struct strbuf tmp = STRBUF_INIT;
 
 	trace2_initialize_clock();
 
@@ -49,9 +50,35 @@ int main(int argc, const char **argv)
 	trace2_cmd_start(argv);
 	trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
 
+	if (!strbuf_getcwd(&tmp))
+		tmp_original_cwd = strbuf_detach(&tmp, NULL);
+
 	result = cmd_main(argc, argv);
 
-	trace2_cmd_exit(result);
+	/* Not exit(3), but a wrapper calling our common_exit() */
+	exit(result);
+}
+
+static void check_bug_if_BUG(void)
+{
+	if (!bug_called_must_BUG)
+		return;
+	BUG("on exit(): had bug() call(s) in this process without explicit BUG_if_bug()");
+}
+
+/* We wrap exit() to call common_exit() in git-compat-util.h */
+int common_exit(const char *file, int line, int code)
+{
+	/*
+	 * For non-POSIX systems: Take the lowest 8 bits of the "code"
+	 * to e.g. turn -1 into 255. On a POSIX system this is
+	 * redundant, see exit(3) and wait(2), but as it doesn't harm
+	 * anything there we don't need to guard this with an "ifdef".
+	 */
+	code &= 0xff;
+
+	check_bug_if_BUG();
+	trace2_cmd_exit_fl(file, line, code);
 
-	return result;
+	return code;
 }