Merge branch 'maint'

* maint:
  t/README: clarify test_must_fail description
  Check size of path buffer before writing into it

Conflicts:
	t/README

setup.c

@@ -170,6 +170,8 @@ static int is_git_directory(const char *suspect)
 	char path[PATH_MAX];
 	size_t len = strlen(suspect);
 
+	if (PATH_MAX <= len + strlen("/objects"))
+		die("Too long path: %.*s", 60, suspect);
 	strcpy(path, suspect);
 	if (getenv(DB_ENVIRONMENT)) {
 		if (access(getenv(DB_ENVIRONMENT), X_OK))