c++: Add abbreviated fn template test for [PR78752]

This adds an abbreviated function template version of the testcase in
PR78752, which seems to already be fixed.

gcc/testsuite/ChangeLog:

	PR c++/78752
	* g++.dg/cpp2a/concepts-pr78752-2.C: New test.

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 795727424098c56e7dd538eb7a64964ef3c42b63..ac5bead5030f69dc54c02eadfac6507aab2eb8c8 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-05-12  Patrick Palka  <ppalka@redhat.com>
+
+       PR c++/78752
+       * g++.dg/cpp2a/concepts-pr78752-2.C: New test.
+
 2020-05-12  Uroš Bizjak  <ubizjak@gmail.com>
 
        PR target/95046

diff --git a/gcc/testsuite/g++.dg/cpp2a/concepts-pr78752-2.C b/gcc/testsuite/g++.dg/cpp2a/concepts-pr78752-2.C
new file mode 100644 (file)
index 0000000..6777054
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/concepts-pr78752-2.C
@@ -0,0 +1,21 @@
+// { dg-do compile { target c++2a } }
+// { dg-additional-options "-fconcepts-ts" }
+
+template <class T, class U>
+concept bool Same = __is_same(T, U);
+
+struct test {
+  void func(Same<int>... ints) {}
+};
+
+void func(Same<int>... ints) {}
+
+int main()
+{
+  test t;
+  t.func(1, 2, 3);
+  func(1, 2, 3);
+
+  t.func(1, 2, ""); // { dg-error "no match" }
+  func(1, 2, ""); // { dg-error "unsatisfied constraints" }
+}