c++: more-specialized test

I noticed the need for this testcase while working on PR102629; since there
is no information about the target type, we don't want to choose the most
specialized overload.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/auto56.C: New test.

diff --git a/gcc/testsuite/g++.dg/cpp0x/auto56.C b/gcc/testsuite/g++.dg/cpp0x/auto56.C
new file mode 100644 (file)
index 0000000..dd55ebf
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/auto56.C
@@ -0,0 +1,6 @@
+// Check that we don't prefer #2 because it's more specialized.
+// { dg-do compile { target c++11 } }
+
+template <class T> T f(T);
+template <class T> T* f(T*);
+auto p = &f<int>;              // { dg-error "" }