fix closing invalid file descriptor with memory_io_buf (#1910)

VowpalWabbit · Jun 5, 2019 · 3ca448c · 3ca448c
1 parent c9be701
commit 3ca448c
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/vowpalwabbit/vwdll.cpp b/vowpalwabbit/vwdll.cpp
@@ -350,6 +350,14 @@ class memory_io_buf : public io_buf
         return nbytes;
     }
 
+    virtual bool close_file() {
+       if (files.size() > 0) {
+            files.pop();
+            return true;
+        }
+        return false;
+    }
+
     char* GetDataPointer() {
         return data.data();
     }