fix parse and semantic v2.1

src/cminus.y

@@ -18,7 +18,7 @@ static int savedNumber;
 static int savedLineNo;  /* ditto */
 static TreeNode * savedTree; /* stores syntax tree for later return */
 static int yylex(void); // added 11/2/11 to ensure no conflict with lex
-
+int yyerror(char * message);
 %}
 
 %token IF ELSE WHILE RETURN INT VOID
@@ -120,13 +120,16 @@ param_list : param_list COMMA param {
 } | param {$$ = $1; };
 
 param : type_specifier name_specifier {
-  $$ = newDeclNode(NonArrParamK );
+  $$ = newDeclNode(NonArrParamK);
   $$->attr.name = savedName;
   $$->type = $1->type;
 } | type_specifier name_specifier LBRACE RBRACE {
   $$ = newDeclNode(ArrParamK);
-  $$->type = $1->type;
   $$->attr.name = savedName;
+  if ($1->type == Integer)
+    $$->type = IntegerArray;
+  else
+    $$->type = Void;
 };
 
 compound_stmt : LCURLY local_declarations statement_list RCURLY {