Mark as referenced the functions from instantiated UserDefinedLiterals.

Fixes rdar://13589856

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179078 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/test/SemaCXX/cxx11-user-defined-literals-unused.cpp b/test/SemaCXX/cxx11-user-defined-literals-unused.cpp
new file mode 100644
index 0000000000..cd93ffbf21
--- /dev/null
+++ b/test/SemaCXX/cxx11-user-defined-literals-unused.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -std=c++11 -verify %s -Wunused
+
+namespace {
+double operator"" _x(long double value) { return double(value); }
+int operator"" _ii(long double value) { return int(value); } // expected-warning {{not needed and will not be emitted}}
+}
+
+namespace rdar13589856 {
+  template<class T> double value() { return 3.2_x; }
+  template<class T> int valuei() { return 3.2_ii; }
+
+  double get_value() { return value<double>(); }
+}