scc

commit 7b66933103d3d4930735aec4dd0d739d0efe78e4
parent c8abdfe1b720a9d786ea3fd840d48b744ef07e06
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri, 11 Jul 2014 11:50:03 +0200

Allow variables with same name of typedef of external contexts

It is legal a code like:

	typedef int pepe;

	main()
	{
		int pepe;
	}

So, we have to detect when we already have a type in the declaration
and don't generate an error when we get a TYPENAME in this case. It
is also necessary add a new rule in directdcl in order to allow
create a new symbol from the string of a TYPENAME.

Diffstat:
M
cc1/decl.c
 | 
13
++++++++-----

1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/cc1/decl.c b/cc1/decl.c
@@ -68,12 +68,13 @@ directdcl(struct dcldata *dp, int8_t flags)
 		dp = declarator0(dp, flags);
 		expect(')');
 	} else if (flags) {
-		if (yytoken != IDEN) {
-			if (flags & ID_EXPECTED)
-				unexpected();
-			sym = install("", NS_IDEN);
-		} else {
+		if (yytoken == IDEN ||
+		    yytoken == TYPE && yylval.token == TYPENAME) {
 			sym = newiden();
+		} else if (flags & ID_EXPECTED) {
+			unexpected();
+		} else {
+			sym = install("", NS_IDEN);
 		}
 		dp->op = IDEN;
 		dp->u.sym = sym;
@@ -186,6 +187,8 @@ specifier(int8_t *sclass)
 			case STRUCT: case UNION:
 				dcl = structdcl; p = &type; break;
 			case TYPENAME:
+				if (type)
+					goto check_types;
 				tp = yylval.sym->type;
 			case VOID:   case BOOL:  case CHAR:
 			case INT:    case FLOAT: case DOUBLE: