Parse the C99 "restrict" keyword correctly (but ignore it otherwise).

git-svn-id: svn://svn.cc65.org/cc65/trunk@3706 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/cc65/datatype.h

@@ -104,7 +104,8 @@ enum {
     T_QUAL_NONE     = 0x0000,
     T_QUAL_CONST    = 0x1000,
     T_QUAL_VOLATILE = 0x2000,
-    T_MASK_QUAL	    = 0x3000,
+    T_QUAL_RESTRICT = 0x4000,
+    T_MASK_QUAL	    = 0x7000,
 
     /* Types */
     T_CHAR     	= T_TYPE_CHAR     | T_CLASS_INT    | T_SIGN_UNSIGNED | T_SIZE_NONE,

src/cc65/declare.c

@@ -103,6 +103,13 @@ static type OptionalQualifiers (type Q)
 		Q |= T_QUAL_VOLATILE;
 		break;
 
+            case TOK_RESTRICT:
+                if (Q & T_QUAL_RESTRICT) {
+                    Error ("Duplicate qualifier: `restrict'");
+                }
+                Q |= T_QUAL_RESTRICT;
+                break;
+
 	    default:
 		Internal ("Unexpected type qualifier token: %d", CurTok.Tok);
 

src/cc65/expr.c

@@ -1628,6 +1628,8 @@ static void hie_internal (const GenDesc* Ops,   /* List of generators */
 	/* All operators that call this function expect an int on the lhs */
 	if (!IsClassInt (Expr->Type)) {
 	    Error ("Integer expression expected");
+            /* To avoid further errors, make Expr a valid int expression */
+            ED_MakeConstAbsInt (Expr, 1);
 	}
 
 	/* Remember the operator token, then skip it */

src/cc65/scanner.h

@@ -58,7 +58,6 @@ typedef enum token_t {
     TOK_AUTO,
     TOK_EXTERN,
     TOK_REGISTER,
-    TOK_RESTRICT,
     TOK_STATIC,
     TOK_TYPEDEF,
 
@@ -66,7 +65,8 @@ typedef enum token_t {
     TOK_FIRST_TYPEQUAL,
     TOK_CONST           = TOK_FIRST_TYPEQUAL,
     TOK_VOLATILE,
-    TOK_LAST_TYPEQUAL   = TOK_VOLATILE,
+    TOK_RESTRICT,
+    TOK_LAST_TYPEQUAL   = TOK_RESTRICT,
 
     /* Tokens denoting types */
     TOK_FIRST_TYPE,