cast_value: assign the new type

The first two arguments of cast_value() are the new expression and the
type wanted for it. This type is then used to calculate the new value.

But the type of the expression must be assigned separately (usually
after the cast because the old and the new expression can refer to
the same object).

To avoid any possible inconsistencies, assign the new type during the
casting itself.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

Author: lucvoo

expand.c

@@ -110,11 +110,13 @@ void cast_value(struct expression *expr, struct symbol *newtype,
 	expr->taint = old->taint;
 	if (old_size == new_size) {
 		expr->value = old->value;
+		expr->ctype = newtype;
 		return;
 	}
 
 	// expand it to the full "long long" value
 	value = get_longlong(old);
+	expr->ctype = newtype;
 
 Int:
 	// _Bool requires a zero test rather than truncation.
@@ -153,6 +155,7 @@ void cast_value(struct expression *expr, struct symbol *newtype,
 		value = (long long)old->fvalue;
 		expr->type = EXPR_VALUE;
 		expr->taint = 0;
+		expr->ctype = newtype;
 		goto Int;
 	}
 
@@ -168,6 +171,7 @@ void cast_value(struct expression *expr, struct symbol *newtype,
 			expr->fvalue = (float)expr->fvalue;
 	}
 	expr->type = EXPR_FVALUE;
+	expr->ctype = newtype;
 }
 
 /* Return true if constant shift size is valid */

expression.c

@@ -433,7 +433,6 @@ struct token *primary_expression(struct token *token, struct expression **tree)
 		if (token_type(token) < TOKEN_WIDE_CHAR) {
 			expr->ctype = &char_ctype;
 			cast_value(expr, &int_ctype, expr, expr->ctype);
-			expr->ctype = &int_ctype;
 		} else {
 			expr->ctype = wchar_ctype;
 		}

parse.c

@@ -904,7 +904,6 @@ static void cast_enum_list(struct symbol_list *list, struct symbol *base_type)
 			continue;
 		}
 		cast_value(expr, base_type, expr, ctype);
-		expr->ctype = base_type;
 	} END_FOR_EACH_PTR(sym);
 }