Handle vertex attriv locations correctly.

[apitrace] / trace_model.hpp

diff --git a/trace_model.hpp b/trace_model.hpp
index 5e0a09d55319d61c1c22df530d2b0330a157afb5..e7a2249c7c979833fbd8e7519ef3f18a5a9c22c0 100644 (file)
--- a/trace_model.hpp
+++ b/trace_model.hpp
@@ -31,7 +31,7 @@
 #define _TRACE_MODEL_HPP_
 
 
-#include <cassert>
+#include <assert.h>
 
 #include <string>
 #include <map>
@@ -316,6 +316,7 @@ public:
     }
 
     inline Value & arg(unsigned index) {
+        assert(index < args.size());
         return *(args[index]);
     }
 };