commit b75c08746dc30ac50e908e8d520042f4157281f9
Author: Jason Merrill <jason@redhat.com>
Date: Wed Jan 29 16:41:23 2014 -0500
PR c++/59989
* pt.c (expand_template_argument_pack): Correct
non_default_args_count calculation.
@@ -3471,7 +3471,7 @@ expand_template_argument_pack (tree args)
for (i = 0; i < num_packed; ++i, ++out_arg)
TREE_VEC_ELT (result_args, out_arg) = TREE_VEC_ELT(packed, i);
if (non_default_args_count > 0)
- non_default_args_count += num_packed;
+ non_default_args_count += num_packed - 1;
}
else
{
new file mode 100644
@@ -0,0 +1,6 @@
+// PR c++/59989
+// { dg-require-effective-target c++11 }
+
+template<typename T> struct X {};
+template<template<typename...> class D, typename ...U> int test(D<U...>*);
+int n = test<X, int>(0); // { dg-error "no match" }