fix double transformation of expressions in var_arg_expression

[r19949]

diff --git a/ast2firm.c b/ast2firm.c
index d4d3bd6..24f0547 100644 (file)
--- a/ast2firm.c
+++ b/ast2firm.c
@@ -2752,14 +2752,17 @@ static ir_node *va_start_expression_to_firm(
 
 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
 {
-       type_t   *const type = expr->base.type;
-       ir_node  *const ap   = expression_to_firm(expr->ap);
-       dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
-       ir_node  *const res  = deref_address(dbgi, type, ap);
+       type_t       *const type    = expr->base.type;
+       expression_t *const ap_expr = expr->ap;
+       ir_node      *const ap_addr = expression_to_addr(ap_expr);
+       ir_node      *const ap      = get_value_from_lvalue(ap_expr, ap_addr);
+       dbg_info     *const dbgi    = get_dbg_info(&expr->base.source_position);
+       ir_node      *const res     = deref_address(dbgi, type, ap);
 
-       ir_node  *const cnst = get_type_size(expr->base.type);
-       ir_node  *const add  = new_d_Add(dbgi, ap, cnst, mode_P_data);
-       set_value_for_expression(expr->ap, add);
+       ir_node      *const cnst    = get_type_size(expr->base.type);
+       ir_node      *const add     = new_d_Add(dbgi, ap, cnst, mode_P_data);
+
+       set_value_for_expression_addr(ap_expr, add, ap_addr);
 
        return res;
 }