Merged array changes to release; fixes #4757

[SVN r67477]

include/boost/array.hpp

@@ -346,7 +346,34 @@ namespace boost {
         x.swap(y);
     }
 
-    // Specific for boost::array: simply returns its elems data member.
+#if defined(__SUNPRO_CC)
+//	Trac ticket #4757; the Sun Solaris compiler can't handle
+//	syntax like 'T(&get_c_array(boost::array<T,N>& arg))[N]'
+//	
+//	We can't just use this for all compilers, because the 
+//		borland compilers can't handle this form. 
+	namespace detail {
+       template <typename T, std::size_t N> struct c_array
+       {
+           typedef T type[N];
+       };
+	}
+    
+   // Specific for boost::array: simply returns its elems data member.
+   template <typename T, std::size_t N>
+   typename detail::c_array<T,N>::type& get_c_array(boost::array<T,N>& arg)
+   {
+       return arg.elems;
+   }
+
+   // Specific for boost::array: simply returns its elems data member.
+   template <typename T, std::size_t N>
+   typename const detail::c_array<T,N>::type& get_c_array(const boost::array<T,N>& arg)
+   {
+       return arg.elems;
+   }
+#else
+// Specific for boost::array: simply returns its elems data member.
     template <typename T, std::size_t N>
     T(&get_c_array(boost::array<T,N>& arg))[N]
     {
@@ -359,7 +386,8 @@ namespace boost {
     {
         return arg.elems;
     }
-
+#endif
+	
 #if 0
     // Overload for std::array, assuming that std::array will have
     // explicit conversion functions as discussed at the WG21 meeting

test/Jamfile.v2

@@ -11,4 +11,5 @@ test-suite array :
     [ run array3.cpp ]
     [ run array4.cpp ]
     [ run array5.cpp ]
+    [ run array6.cpp ]
     ;

test/array6.cpp

@@ -0,0 +1,48 @@
+/* tests for using class array<> specialization for size 0
+ * (C) Copyright Alisdair Meredith 2006.
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#include <string>
+#include <iostream>
+#include <boost/array.hpp>
+#include <algorithm>
+
+namespace {
+unsigned int failed_tests = 0;
+
+void    fail_test( const char * reason ) {
+    ++failed_tests;
+    std::cerr << "Test failure " << failed_tests << ": " << reason << std::endl;
+}
+
+template< class T >
+void    RunTests()
+{
+    typedef boost::array< T, 5 >    test_type;
+    typedef T arr[5];
+    test_type           test_case; //   =   { 1, 1, 2, 3, 5 };
+    
+    arr &aRef = get_c_array ( test_case );
+	if ( &*test_case.begin () != &aRef[0] )
+		fail_test ( "Array6: Same thing not equal?(1)" );
+		
+	const arr &caRef = get_c_array ( test_case );
+	typename test_type::const_iterator iter = test_case.begin ();
+	if ( &*iter != &caRef[0] )
+		fail_test ( "Array6: Same thing not equal?(2)" );
+}
+
+}
+
+int main()
+{
+    RunTests< bool >();
+    RunTests< void * >();
+    RunTests< long double >();
+    RunTests< std::string >();
+    return failed_tests;
+}
+