From 4eb8255191896120db49604760daa1234abd86b9 Mon Sep 17 00:00:00 2001
From: Martin Sebor <msebor@redhat.com>
Date: Thu, 28 Mar 2019 21:20:18 +0000
Subject: [PATCH] PR c++/81506 - Invalid declaration with decltype accepted

testsuite/ChangeLog:
	* g++.dg/cpp0x/decltype-pr81506.C: New test.

From-SVN: r270006
---
 gcc/testsuite/ChangeLog                       |  5 ++++
 gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C | 28 +++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9a496ec58f4..e0832a910c2 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-03-28  Martin Sebor  <msebor@redhat.com>
+
+	PR c++/81506
+	* g++.dg/cpp0x/decltype-pr81506.C: New test.
+
 2019-03-28  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/89612 - ICE with member friend template with noexcept.
diff --git a/gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C b/gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C
new file mode 100644
index 00000000000..ecf762eb75a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C
@@ -0,0 +1,28 @@
+// PR c++/81506 - Invalid declaration with decltype accepted
+// { dg-do compile }
+//
+
+#if __cplusplus < 201103L
+# define decltype __typeof__
+#endif
+
+template <int>
+struct A
+{
+  A () {
+    decltype (this);     // { dg-error "declaration does not declare anything" }
+  }
+};
+
+A<0> a;
+
+template <class>
+struct B
+{
+  B () {
+    __typeof__ (this);   // { dg-error "declaration does not declare anything" }
+  }
+};
+
+B<int> b;
+
-- 
2.30.2