1 files changed, 27 insertions, 0 deletions
diff --git a/clang/test/CXX/lex/lex.literal/lex.ext/p7.cpp b/clang/test/CXX/lex/lex.literal/lex.ext/p7.cpp
new file mode 100644
index 0000000..79c9394
--- /dev/null
+++ b/clang/test/CXX/lex/lex.literal/lex.ext/p7.cpp
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
+
+using size_t = decltype(sizeof(int));
+namespace std {
+  struct string {};
+}
+
+template<typename T, typename U> struct same_type;
+template<typename T> struct same_type<T, T> {};
+
+namespace std_example {
+
+long double operator "" _w(long double);
+std::string operator "" _w(const char16_t*, size_t);
+unsigned operator "" _w(const char*);
+int main() {
+  auto v1 = 1.2_w;    // calls operator "" _w(1.2L)
+  auto v2 = u"one"_w; // calls operator "" _w(u"one", 3)
+  auto v3 = 12_w;     // calls operator "" _w("12")
+  "two"_w;            // expected-error {{no matching literal operator}}
+
+  same_type<decltype(v1), long double> test1;
+  same_type<decltype(v2), std::string> test2;
+  same_type<decltype(v3), unsigned> test3;
+}
+
+}