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Initialize type pointer in struct symbols

Before this patch we were assign a new allocated type to the symbol,
and this new type had forward field to 0. The correct is not allocate a
new type and assign the input parameter as type of the symbol.

--- a/decl.c

+++ b/decl.c

@@ -66,12 +66,13 @@

 }

 /* TODO: Add the type to the symbol */

+

 static struct symbol *

 aggregate(register struct ctype *tp)

 {

 	struct symbol *sym = NULL;

-	tp->forward = 1;

+	tp->forward = 1;

 	if (yytoken == IDEN) {

 		register struct ctype *aux;

@@ -83,7 +84,7 @@

 			}

 			*tp = *aux;

 		} else {

-			sym->ctype = xmalloc(sizeof(*tp));

+			sym->ctype = tp;

 			tp->sym = sym;

 			tp->ns = ++nr_tags; /* FIX: It is only necessary */

 		}                           /*      in struct and union  */

-- 

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