Debugging

Author: tautschnig

src/ansi-c/c_preprocess.cpp

@@ -319,6 +319,8 @@ bool c_preprocess_visual_studio(
 
   if(result!=0)
   {
+    std::ifstream input(file);
+    message.error() << input.rdbuf() << messaget::eom;
     message.error() << "CL Preprocessing failed" << messaget::eom;
     return true;
   }