@@ -13239,8 +13239,7 @@ tsubst_copy_and_build (tree t,
case VA_ARG_EXPR:
return build_x_va_arg (RECUR (TREE_OPERAND (t, 0)),
- tsubst_copy (TREE_TYPE (t), args, complain,
- in_decl));
+ tsubst (TREE_TYPE (t), args, complain, in_decl));
case OFFSETOF_EXPR:
return finish_offsetof (RECUR (TREE_OPERAND (t, 0)));
@@ -0,0 +1,53 @@
+// PR c++/47022
+// { dg-do compile }
+
+#include <cstdarg>
+
+template <typename T>
+void
+f1 (T *p, va_list ap)
+{
+ *p = va_arg (ap, long double);
+ *p += va_arg (ap, double);
+}
+
+template <typename T>
+void
+f2 (T *p, va_list ap)
+{
+ *p = __real__ va_arg (ap, _Complex int);
+ *p += __imag__ va_arg (ap, _Complex double);
+ *p += __imag__ va_arg (ap, _Complex long double);
+}
+
+template <typename T>
+void
+f3 (T *p, va_list ap)
+{
+ *p = va_arg (ap, T);
+}
+
+void
+foo (int x, va_list ap)
+{
+ if (x == 0)
+ {
+ long double ld;
+ f1 (&ld, ap);
+ }
+ else if (x == 1)
+ {
+ int i;
+ f2 (&i, ap);
+ }
+ else if (x == 2)
+ {
+ long double ld;
+ f3 (&ld, ap);
+ }
+ else if (x == 3)
+ {
+ _Complex double cd;
+ f3 (&cd, ap);
+ }
+}