From f210b3b3723c32bfdaafa149ca5697e83e0a9479 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 20 Feb 2018 18:00:23 +0100
Subject: [PATCH] re PR c++/84488 (Incorrect "set but not used" warning for
 static_cast<Enum>(double))

	PR c++/84488
	* g++.dg/warn/Wunused-var-30.C: New test.

From-SVN: r257850
---
 gcc/testsuite/ChangeLog                    |  5 +++++
 gcc/testsuite/g++.dg/warn/Wunused-var-30.C | 11 +++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/warn/Wunused-var-30.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8eb50db7478..d6cedecf44a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-02-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/84488
+	* g++.dg/warn/Wunused-var-30.C: New test.
+
 2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	PR tree-optimization/84419
diff --git a/gcc/testsuite/g++.dg/warn/Wunused-var-30.C b/gcc/testsuite/g++.dg/warn/Wunused-var-30.C
new file mode 100644
index 00000000000..e95e120e656
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wunused-var-30.C
@@ -0,0 +1,11 @@
+// PR c++/84488
+// { dg-do compile }
+// { dg-options "-Wunused-but-set-variable" }
+
+int
+foo ()
+{
+  enum E { A, B, C, D };
+  double r = 1.0;		// { dg-bogus "set but not used" }
+  return static_cast<E>(r);
+}
-- 
2.30.2