func: void CWE690_NULL_Deref_From_Return__fopen_67_bad() FILE * data ; CWE690_NULL_Deref_From_Return__fopen_67_structType myStruct ; data = NULL; data = fopen ( "file.txt" , "w+" ); myStruct . structFirst = data; CWE690_NULL_Deref_From_Return__fopen_67b_badSink ( myStruct ); void CWE690_NULL_Deref_From_Return__fopen_67b_badSink(CWE690_NULL_Deref_From_Return__fopen_67_structType myStruct) FILE * data = myStruct . structFirst ; fclose ( data ); 