From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 29 Mar 2018 11:18:04 +0000 (+0200)
Subject: re PR c++/85108 (Incorrect warning for constexpr lambda with -Wunused-but-set-variable)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=036c9eb5d91e589ec10bb753ba2066963f9bcccc;p=gcc.git

re PR c++/85108 (Incorrect warning for constexpr lambda with -Wunused-but-set-variable)

	PR c++/85108
	* g++.dg/warn/Wunused-var-31.C: New test.

From-SVN: r258952
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 89712e3f5b1..788dbaa48c2 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2018-03-29  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/85108
+	* g++.dg/warn/Wunused-var-31.C: New test.
+
 	PR c/85094
 	* c-c++-common/Wduplicated-branches-14.c: New test.
 
diff --git a/gcc/testsuite/g++.dg/warn/Wunused-var-31.C b/gcc/testsuite/g++.dg/warn/Wunused-var-31.C
new file mode 100644
index 00000000000..74c016ba230
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wunused-var-31.C
@@ -0,0 +1,11 @@
+// PR c++/85108
+// { dg-do compile { target c++17 } }
+// { dg-options "-Wunused-but-set-variable" }
+
+int
+main ()
+{
+  auto constexpr add = [] (auto a, auto b) { return a + b; };	// { dg-bogus "set but not used" }
+  auto test_lambda = [&] () { return add (2, 2); };
+  return test_lambda () - 4;
+}