diff --git a/abspath.c b/abspath.c
index f8a526f3916d753addac6acce1986cd3079472b8..40cdc46219d4eba87ba947d9f5556eb80dfdfa9b 100644
--- a/abspath.c
+++ b/abspath.c
@@ -153,6 +153,11 @@ const char *real_path(const char *path)
 	return real_path_internal(path, 1);
 }
 
+const char *real_path_if_valid(const char *path)
+{
+	return real_path_internal(path, 0);
+}
+
 static const char *get_pwd_cwd(void)
 {
 	static char cwd[PATH_MAX + 1];
diff --git a/cache.h b/cache.h
index a58df84bd374feda0e0c7fdfe65129db2cb3c252..b0d75bcb0e5dd9bee0280233784abf1aad4e494b 100644
--- a/cache.h
+++ b/cache.h
@@ -714,6 +714,7 @@ static inline int is_absolute_path(const char *path)
 }
 int is_directory(const char *);
 const char *real_path(const char *path);
+const char *real_path_if_valid(const char *path);
 const char *absolute_path(const char *path);
 const char *relative_path(const char *abs, const char *base);
 int normalize_path_copy(char *dst, const char *src);