1 files changed, 4 insertions, 0 deletions
diff --git a/src/disk_interface_test.cc b/src/disk_interface_test.cc
index b8ad5e6..052a94b 100644
--- a/src/disk_interface_test.cc
+++ b/src/disk_interface_test.cc
@@ -102,6 +102,10 @@ struct StatTest : public StateTestWithBuiltinRules,
                   public DiskInterface {
   // DiskInterface implementation.
   virtual TimeStamp Stat(const string& path);
+  virtual bool WriteFile(const string& path, const string & contents) {
+    assert(false);
+    return true;
+  }
   virtual bool MakeDir(const string& path) {
     assert(false);
     return false;