Add tests for #1403

projects/SelfTest/UsageTests/Compilation.tests.cpp

@@ -5,6 +5,27 @@
  *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  */
 
+// Setup for #1403 -- look for global overloads of operator << for classes
+// in a different namespace.
+
+#include <ostream>
+
+
+
+namespace foo {
+    struct helper_1403 {
+        bool operator==(helper_1403) const { return true; }
+    };
+}
+
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wmissing-declarations"
+#endif
+std::ostream& operator<<(std::ostream& out, foo::helper_1403 const&) {
+    return out << "[1403 helper]";
+}
+///////////////////////////////
+ 
 #include "catch.hpp"
 
 #include <cstring>
@@ -153,5 +174,12 @@ namespace { namespace CompilationTests {
     TEST_CASE_METHOD((Fixture_1245<int, int>), "#1245", "[compilation]") {
         SUCCEED();
     }
-
+    
+    TEST_CASE("#1403", "[compilation]") {
+        ::foo::helper_1403 h1, h2;
+        REQUIRE(h1 == h2);
+    }
+    
 }} // namespace CompilationTests
+
+