Fixes toString() for function pointers and added support for member function pointers.

- thanks to Malcolm Noyes for supplying sample code on which the solution here was based

include/internal/catch_tostring.hpp

@@ -79,6 +79,25 @@ namespace Detail {
         }
     };
 
+    // For display purposes only.
+    // Does not consider endian-ness
+    template<typename T>
+    std::string rawMemoryToString( T value ) {
+        union
+        {
+            T value;
+            unsigned char bytes[sizeof(T)];
+        } valueAsBuffer;
+
+        valueAsBuffer.value = value;
+
+        std::ostringstream oss;
+        oss << "0x";
+        for( unsigned char* cp = valueAsBuffer.bytes; cp < valueAsBuffer.bytes+sizeof(T); ++cp )
+            oss << std::hex << std::setw(2) << std::setfill('0') << (unsigned int)*cp;
+        return oss.str();
+    }
+
 } // end namespace Detail
 
 template<typename T>
@@ -94,9 +113,18 @@ struct StringMaker<T*> {
     static std::string convert( U* p ) {
         if( !p )
             return INTERNAL_CATCH_STRINGIFY( NULL );
-        std::ostringstream oss;
-        oss << "0x" << std::hex << reinterpret_cast<unsigned long>( p );
-        return oss.str();
+        else
+            return Detail::rawMemoryToString( p );
+    }
+};
+
+template<typename R, typename C>
+struct StringMaker<R C::*> {
+    static std::string convert( R C::* p ) {
+        if( !p )
+            return INTERNAL_CATCH_STRINGIFY( NULL );
+        else
+            return Detail::rawMemoryToString( p );
     }
 };
 

projects/SelfTest/Baselines/console.std.approved.txt

@@ -750,5 +750,5 @@ with expansion:
   "first" == "second"
 
 ===============================================================================
-122 test cases - 36 failed (675 assertions - 91 failed)
+123 test cases - 36 failed (676 assertions - 91 failed)
 

projects/SelfTest/Baselines/console.sw.approved.txt

@@ -6366,7 +6366,21 @@ TrickyTests.cpp:<line number>:
 PASSED:
   REQUIRE( a == &foo )
 with expansion:
-  1 == 1
+  0x<hex digits> == 0x<hex digits>
+
+-------------------------------------------------------------------------------
+Comparing member function pointers
+-------------------------------------------------------------------------------
+TrickyTests.cpp:<line number>
+...............................................................................
+
+TrickyTests.cpp:<line number>:
+PASSED:
+  CHECK( m == &S::f )
+with expansion:
+  0x<hex digits>
+  ==
+  0x<hex digits>
 
 -------------------------------------------------------------------------------
 pointer to class
@@ -7144,5 +7158,5 @@ with expansion:
   true
 
 ===============================================================================
-122 test cases - 51 failed (694 assertions - 110 failed)
+123 test cases - 51 failed (695 assertions - 110 failed)
 

projects/SelfTest/Baselines/junit.sw.approved.txt

@@ -1,5 +1,5 @@
 <testsuites>
-  <testsuite name="~_" errors="10" failures="100" tests="694" hostname="tbd" time="{duration}" timestamp="tbd">
+  <testsuite name="~_" errors="10" failures="100" tests="695" hostname="tbd" time="{duration}" timestamp="tbd">
     <testcase classname="global" name="Some simple comparisons between doubles" time="{duration}"/>
     <testcase classname="global" name="Approximate comparisons with different epsilons" time="{duration}"/>
     <testcase classname="global" name="Approximate comparisons with floats" time="{duration}"/>
@@ -514,6 +514,7 @@ TrickyTests.cpp:<line number>
     <testcase classname="Assertions then sections" name="A section/Another other section" time="{duration}"/>
     <testcase classname="global" name="non streamable - with conv. op" time="{duration}"/>
     <testcase classname="global" name="Comparing function pointers" time="{duration}"/>
+    <testcase classname="global" name="Comparing member function pointers" time="{duration}"/>
     <testcase classname="global" name="pointer to class" time="{duration}"/>
     <testcase classname="global" name="X/level/0/a" time="{duration}"/>
     <testcase classname="global" name="X/level/0/b" time="{duration}"/>

projects/SelfTest/Baselines/xml.sw.approved.txt

@@ -6637,7 +6637,20 @@ there"
           a == &foo
         </Original>
         <Expanded>
-          1 == 1
+          0x<hex digits> == 0x<hex digits>
+        </Expanded>
+      </Expression>
+      <OverallResult success="true"/>
+    </TestCase>
+    <TestCase name="Comparing member function pointers">
+      <Expression success="true" filename="/Users/philnash/Dev/OSS/Catch/projects/SelfTest/TrickyTests.cpp" >
+        <Original>
+          m == &amp;S::f
+        </Original>
+        <Expanded>
+          0x<hex digits>
+==
+0x<hex digits>
         </Expanded>
       </Expression>
       <OverallResult success="true"/>
@@ -7405,7 +7418,7 @@ there&quot;
       </Section>
       <OverallResult success="true"/>
     </TestCase>
-    <OverallResults successes="584" failures="110"/>
+    <OverallResults successes="585" failures="110"/>
   </Group>
-  <OverallResults successes="584" failures="110"/>
+  <OverallResults successes="585" failures="110"/>
 </Catch>

projects/SelfTest/TrickyTests.cpp

@@ -356,6 +356,20 @@ TEST_CASE( "Comparing function pointers", "[Tricky][function pointer]" )
     REQUIRE( a == &foo );
 }
 
+struct S
+{
+    void f() {}
+};
+
+
+TEST_CASE( "Comparing member function pointers", "[Tricky][member function pointer]" )
+{
+    typedef void (S::*MF)();
+    MF m = &S::f;
+
+    CHECK( m == &S::f );
+}
+
 class ClassName {};
 
 TEST_CASE( "pointer to class", "[Tricky]" )

projects/XCode4/CatchSelfTest/CatchSelfTest.xcodeproj/project.pbxproj

@@ -581,7 +581,7 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				MACOSX_DEPLOYMENT_TARGET = "";
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
 				USER_HEADER_SEARCH_PATHS = "\"$(PROJECT_DIR)/../../../include\"";
@@ -624,7 +624,7 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				MACOSX_DEPLOYMENT_TARGET = "";
 				SDKROOT = macosx;
 				USER_HEADER_SEARCH_PATHS = "\"$(PROJECT_DIR)/../../../include\"";
 			};