Simplify comparators of [unordered_][multi]map. This fixes http://llvm.org/bugs/show_bug.cgi?id=16538

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185665 91177308-0d34-0410-b5e6-96231b3b80d8

test/containers/associative/map/compare.pass.cpp

@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template <class Key, class T, class Compare = less<Key>,
+//           class Allocator = allocator<pair<const Key, T>>>
+// class map
+
+// http://llvm.org/bugs/show_bug.cgi?id=16538
+
+#include <map>
+
+struct Key {
+  template <typename T> Key(const T&) {}
+  bool operator< (const Key&) const { return false; }
+};
+
+int
+main()
+{
+    std::map<Key, int>::iterator it = std::map<Key, int>().find(Key(0));
+}