safeguard: do not read/write 0 bytes (iostream)

2014-06-05 23:14:36 +06:00
parent a32116d24c
commit b6787b0014
6 changed files with 61 additions and 18 deletions
@@ -79,8 +79,11 @@ int main(int argc, char *argv[])
        restriction_ifstream.read((char *)&usable_restriction_count, sizeof(uint32_t));
        restrictions_vector.resize(usable_restriction_count);

-        restriction_ifstream.read((char *)&(restrictions_vector[0]),
-                                  usable_restriction_count * sizeof(TurnRestriction));
+        if (usable_restriction_count>0)
+        {
+            restriction_ifstream.read((char *)&(restrictions_vector[0]),
+                                 usable_restriction_count * sizeof(TurnRestriction));
+        }
        restriction_ifstream.close();

        std::ifstream input_stream;