Run most of the unordered container tests (not the exception tests) on warning

level 4 on Visual C++.


[SVN r38648]

test/unordered/Jamfile.v2

@@ -9,6 +9,7 @@ project unordered-test/unordered
     : requirements
         <toolset>intel-linux:"<cxxflags>-strict_ansi -cxxlib-icc"
         <toolset>gcc:<cxxflags>-Wsign-promo
+        <toolset>msvc:<cxxflags>/W4
     ;
 
 test-suite unordered-tests

test/unordered/compile_tests.cpp

@@ -6,7 +6,17 @@
 #include <boost/unordered_set.hpp>
 #include <boost/unordered_map.hpp>
 
+#if defined(BOOST_MSVC)
+#pragma warning(push)
+#pragma warning(disable:4100) // unreferenced formal parameter
+#endif
+
 #include <boost/concept_check.hpp>
+
+#if defined(BOOST_MSVC)
+#pragma warning(pop)
+#endif
+
 #include <boost/mpl/assert.hpp>
 #include <boost/iterator/iterator_traits.hpp>
 #include "../helpers/check_return_type.hpp"

test/unordered/load_factor_tests.cpp

@@ -9,6 +9,11 @@
 #include <boost/limits.hpp>
 #include "../helpers/random_values.hpp"
 
+#if defined(BOOST_MSVC)
+#pragma warning(push)
+#pragma warning(disable:4127) // conditional expression is constant
+#endif
+
 template <class X>
 void load_factor_tests(X* = 0)
 {
@@ -70,3 +75,8 @@ int main()
 
     return boost::report_errors();
 }
+
+#if defined(BOOST_MSVC)
+#pragma warning(pop)
+#pragma warning(disable:4127) // conditional expression is constant
+#endif

test/unordered/unnecessary_copy_tests.cpp

@@ -11,7 +11,7 @@ struct count_copies
 {
     static int count;
     count_copies() { ++count; }
-    count_copies(count_copies const& x) { ++count; }
+    count_copies(count_copies const&) { ++count; }
 private:
     count_copies& operator=(count_copies const&);
 };
@@ -20,7 +20,7 @@ private:
 namespace boost {
 #endif
 
-std::size_t hash_value(count_copies const& x) {
+std::size_t hash_value(count_copies const&) {
     return 0;
 }
 
@@ -28,7 +28,7 @@ std::size_t hash_value(count_copies const& x) {
 }
 #endif
 
-bool operator==(count_copies const& x, count_copies const& y) {
+bool operator==(count_copies const&, count_copies const&) {
     return true;
 }