Better error message when local file status cannot be retrieved

1 files changed, 7 insertions, 0 deletions

diff --git a/src/File.h b/src/File.h
index 1e659022..6d304640 100644
--- a/src/File.h
+++ b/src/File.h
@@ -71,6 +71,13 @@ public:
   bool exists();
 
   /**
+   * Tests whether the file or directory denoted by name exists.  If
+   * file does not exist, or file status could not be retrieved, this
+   * function stores error message to |err|.
+   */
+  bool exists(std::string& err);
+
+  /**
    * Tests whether the file denoted by name is a regular file.
    */
   bool isFile();