diff --git a/projects/SelfTest/Baselines/console.std.approved.txt b/projects/SelfTest/Baselines/console.std.approved.txt
index d2e42b43..a97b7a3a 100644
--- a/projects/SelfTest/Baselines/console.std.approved.txt
+++ b/projects/SelfTest/Baselines/console.std.approved.txt
@@ -787,5 +787,5 @@ with expansion:
 
 ===============================================================================
 test cases: 148 | 109 passed | 38 failed |  1 failed as expected
-assertions: 738 | 646 passed | 79 failed | 13 failed as expected
+assertions: 739 | 647 passed | 79 failed | 13 failed as expected
 
diff --git a/projects/SelfTest/Baselines/console.sw.approved.txt b/projects/SelfTest/Baselines/console.sw.approved.txt
index 169f2633..54b7c915 100644
--- a/projects/SelfTest/Baselines/console.sw.approved.txt
+++ b/projects/SelfTest/Baselines/console.sw.approved.txt
@@ -75,6 +75,14 @@ PASSED:
 with expansion:
   "E2/V1" == "E2/V1"
 
+EnumToString.cpp:<line number>:
+PASSED:
+  CHECK( Catch::toString(e3) == "Unknown enum value 10" )
+with expansion:
+  "Unknown enum value 10"
+  ==
+  "Unknown enum value 10"
+
 -------------------------------------------------------------------------------
 Some simple comparisons between doubles
 -------------------------------------------------------------------------------
@@ -7676,5 +7684,5 @@ with expansion:
 
 ===============================================================================
 test cases: 148 |  93 passed | 54 failed |  1 failed as expected
-assertions: 758 | 646 passed | 99 failed | 13 failed as expected
+assertions: 759 | 647 passed | 99 failed | 13 failed as expected
 
diff --git a/projects/SelfTest/Baselines/console.swa4.approved.txt b/projects/SelfTest/Baselines/console.swa4.approved.txt
index 276c93ec..c8993019 100644
--- a/projects/SelfTest/Baselines/console.swa4.approved.txt
+++ b/projects/SelfTest/Baselines/console.swa4.approved.txt
@@ -75,6 +75,14 @@ PASSED:
 with expansion:
   "E2/V1" == "E2/V1"
 
+EnumToString.cpp:<line number>:
+PASSED:
+  CHECK( Catch::toString(e3) == "Unknown enum value 10" )
+with expansion:
+  "Unknown enum value 10"
+  ==
+  "Unknown enum value 10"
+
 -------------------------------------------------------------------------------
 Some simple comparisons between doubles
 -------------------------------------------------------------------------------
@@ -479,5 +487,5 @@ with expansion:
 
 ===============================================================================
 test cases: 19 | 15 passed | 3 failed | 1 failed as expected
-assertions: 61 | 55 passed | 4 failed | 2 failed as expected
+assertions: 62 | 56 passed | 4 failed | 2 failed as expected
 
diff --git a/projects/SelfTest/Baselines/junit.sw.approved.txt b/projects/SelfTest/Baselines/junit.sw.approved.txt
index 7ce10d72..07984f57 100644
--- a/projects/SelfTest/Baselines/junit.sw.approved.txt
+++ b/projects/SelfTest/Baselines/junit.sw.approved.txt
@@ -1,5 +1,5 @@
 <testsuites>
-  <testsuite errors="12" failures="87" tests="758" hostname="tbd" time="{duration}" timestamp="tbd">
+  <testsuite errors="12" failures="87" tests="759" hostname="tbd" time="{duration}" timestamp="tbd">
     <testcase classname="global" name="toString(enum)" time="{duration}"/>
     <testcase classname="global" name="toString(enum w/operator&lt;&lt;)" time="{duration}"/>
     <testcase classname="global" name="toString(enum class)" time="{duration}"/>
diff --git a/projects/SelfTest/Baselines/xml.sw.approved.txt b/projects/SelfTest/Baselines/xml.sw.approved.txt
index 5c06f6e0..146a9eb3 100644
--- a/projects/SelfTest/Baselines/xml.sw.approved.txt
+++ b/projects/SelfTest/Baselines/xml.sw.approved.txt
@@ -74,6 +74,16 @@
           &quot;E2/V1&quot; == &quot;E2/V1&quot;
         </Expanded>
       </Expression>
+      <Expression success="true" filename="/Users/philnash/Dev/OSS/Catch-Dev/projects/SelfTest/EnumToString.cpp" >
+        <Original>
+          Catch::toString(e3) == &quot;Unknown enum value 10&quot;
+        </Original>
+        <Expanded>
+          &quot;Unknown enum value 10&quot;
+==
+&quot;Unknown enum value 10&quot;
+        </Expanded>
+      </Expression>
       <OverallResult success="true"/>
     </TestCase>
     <TestCase name="Some simple comparisons between doubles">
@@ -7940,7 +7950,7 @@ there&quot;
       </Section>
       <OverallResult success="true"/>
     </TestCase>
-    <OverallResults successes="646" failures="99" expectedFailures="13"/>
+    <OverallResults successes="647" failures="99" expectedFailures="13"/>
   </Group>
-  <OverallResults successes="646" failures="99" expectedFailures="13"/>
+  <OverallResults successes="647" failures="99" expectedFailures="13"/>
 </Catch>
diff --git a/projects/SelfTest/EnumToString.cpp b/projects/SelfTest/EnumToString.cpp
index 40c11ca9..b35721dc 100644
--- a/projects/SelfTest/EnumToString.cpp
+++ b/projects/SelfTest/EnumToString.cpp
@@ -8,8 +8,7 @@
 // Enum without user-provided stream operator
 enum Enum1 { Enum1Value0, Enum1Value1 };
 
-TEST_CASE( "toString(enum)", "[toString][enum]" )
-{
+TEST_CASE( "toString(enum)", "[toString][enum]" ) {
     Enum1 e0 = Enum1Value0;
     CHECK( Catch::toString(e0) == "0" );
     Enum1 e1 = Enum1Value1;
@@ -19,13 +18,11 @@ TEST_CASE( "toString(enum)", "[toString][enum]" )
 // Enum with user-provided stream operator
 enum Enum2 { Enum2Value0, Enum2Value1 };
 
-inline std::ostream& operator<<( std::ostream& os, Enum2 v )
-{
+inline std::ostream& operator<<( std::ostream& os, Enum2 v ) {
     return os << "E2{" << static_cast<int>(v) << "}";
 }
 
-TEST_CASE( "toString(enum w/operator<<)", "[toString][enum]" )
-{
+TEST_CASE( "toString(enum w/operator<<)", "[toString][enum]" ) {
     Enum2 e0 = Enum2Value0;
     CHECK( Catch::toString(e0) == "E2{0}" );
     Enum2 e1 = Enum2Value1;
@@ -33,11 +30,15 @@ TEST_CASE( "toString(enum w/operator<<)", "[toString][enum]" )
 }
 
 #if defined(CATCH_CPP11_OR_GREATER)
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wc++98-compat"
+#endif
+
 // Enum class without user-provided stream operator
 enum class EnumClass1 { EnumClass1Value0, EnumClass1Value1 };
 
-TEST_CASE( "toString(enum class)", "[toString][enum][enumClass]" )
-{
+TEST_CASE( "toString(enum class)", "[toString][enum][enumClass]" ) {
     EnumClass1 e0 = EnumClass1::EnumClass1Value0;
     CHECK( Catch::toString(e0) == "0" );
     EnumClass1 e1 = EnumClass1::EnumClass1Value1;
@@ -47,25 +48,29 @@ TEST_CASE( "toString(enum class)", "[toString][enum][enumClass]" )
 // Enum class with user-provided stream operator
 enum class EnumClass2 : short { EnumClass2Value0, EnumClass2Value1 };
 
-inline std::ostream& operator<<( std::ostream& os, EnumClass2 e2 )
-{
-    switch( e2 )
-    {
-      case EnumClass2::EnumClass2Value0:
-          return os << "E2/V0";
-      case EnumClass2::EnumClass2Value1:
-          return os << "E2/V1";
+inline std::ostream& operator<<( std::ostream& os, EnumClass2 e2 ) {
+    switch( (int)e2 ) {
+        case (int)EnumClass2::EnumClass2Value0:
+            return os << "E2/V0";
+        case (int)EnumClass2::EnumClass2Value1:
+            return os << "E2/V1";
+        default:
+            return os << "Unknown enum value " << (int)e2;
     }
-    return os << "unexpected...";
 }
 
-TEST_CASE( "toString(enum class w/operator<<)", "[toString][enum][enumClass]" )
-{
+TEST_CASE( "toString(enum class w/operator<<)", "[toString][enum][enumClass]" ) {
     EnumClass2 e0 = EnumClass2::EnumClass2Value0;
     CHECK( Catch::toString(e0) == "E2/V0" );
     EnumClass2 e1 = EnumClass2::EnumClass2Value1;
     CHECK( Catch::toString(e1) == "E2/V1" );
+
+    EnumClass2 e3 = static_cast<EnumClass2>(10);
+    CHECK( Catch::toString(e3) == "Unknown enum value 10" );
 }
 
+#ifdef __clang__
+#pragma clang diagnostic pop
 #endif
+#endif // CATCH_CPP11_OR_GREATER
 
diff --git a/projects/SelfTest/ToStringPair.cpp b/projects/SelfTest/ToStringPair.cpp
index 2de4a55a..8f510700 100644
--- a/projects/SelfTest/ToStringPair.cpp
+++ b/projects/SelfTest/ToStringPair.cpp
@@ -18,28 +18,24 @@ namespace Catch {
     };
 }
 
-TEST_CASE( "std::pair<int,std::string> -> toString", "[toString][pair]" )
-{
+TEST_CASE( "std::pair<int,std::string> -> toString", "[toString][pair]" ) {
     std::pair<int,std::string> value( 34, "xyzzy" );
     REQUIRE( Catch::toString( value ) == "{ 34, \"xyzzy\" }" );
 }
 
-TEST_CASE( "std::pair<int,const std::string> -> toString", "[toString][pair]" )
-{
+TEST_CASE( "std::pair<int,const std::string> -> toString", "[toString][pair]" ) {
     std::pair<int,const std::string> value( 34, "xyzzy" );
     REQUIRE( Catch::toString(value) == "{ 34, \"xyzzy\" }" );
 }
 
-TEST_CASE( "std::vector<std::pair<std::string,int> > -> toString", "[toString][pair]" )
-{
+TEST_CASE( "std::vector<std::pair<std::string,int> > -> toString", "[toString][pair]" ) {
     std::vector<std::pair<std::string,int> > pr;
     pr.push_back( std::make_pair("green", 55 ) );
     REQUIRE( Catch::toString( pr ) == "{ { \"green\", 55 } }" );
 }
 
 // This is pretty contrived - I figure if this works, anything will...
-TEST_CASE( "pair<pair<int,const char *,pair<std::string,int> > -> toString", "[toString][pair]" )
-{
+TEST_CASE( "pair<pair<int,const char *,pair<std::string,int> > -> toString", "[toString][pair]" ) {
     typedef std::pair<int,const char *> left_t;
     typedef std::pair<std::string,int> right_t;
 
diff --git a/projects/SelfTest/ToStringVector.cpp b/projects/SelfTest/ToStringVector.cpp
index f3b036e5..44790605 100644
--- a/projects/SelfTest/ToStringVector.cpp
+++ b/projects/SelfTest/ToStringVector.cpp
@@ -24,6 +24,11 @@ TEST_CASE( "vector<string> -> toString", "[toString][vector]" )
 }
 
 #if defined(CATCH_CPP11_OR_GREATER)
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wc++98-compat"
+#endif
+
 /*
   Note: These tests *can* be made to work with C++ < 11, but the
   allocator is a lot more work...
@@ -34,12 +39,10 @@ namespace {
     struct minimal_allocator {
         typedef T value_type;
         typedef std::size_t size_type;
-        T *allocate( size_type n )
-        {
+        T *allocate( size_type n ) {
             return static_cast<T *>( ::operator new( n * sizeof(T) ) );
         }
-        void deallocate( T *p, size_type /*n*/ )
-        {
+        void deallocate( T *p, size_type /*n*/ ) {
             ::operator delete( static_cast<void *>(p) );
         }
         template<typename U>
@@ -49,8 +52,7 @@ namespace {
     };
 }
 
-TEST_CASE( "vector<int,allocator> -> toString", "[toString][vector,allocator]" )
-{
+TEST_CASE( "vector<int,allocator> -> toString", "[toString][vector,allocator]" ) {
     std::vector<int,minimal_allocator<int> > vv;
     REQUIRE( Catch::toString(vv) == "{  }" );
     vv.push_back( 42 );
@@ -59,8 +61,7 @@ TEST_CASE( "vector<int,allocator> -> toString", "[toString][vector,allocator]" )
     REQUIRE( Catch::toString(vv) == "{ 42, 512 }" );
 }
 
-TEST_CASE( "vec<vec<string,alloc>> -> toString", "[toString][vector,allocator]" )
-{
+TEST_CASE( "vec<vec<string,alloc>> -> toString", "[toString][vector,allocator]" ) {
     typedef std::vector<std::string,minimal_allocator<std::string> > inner;
     typedef std::vector<inner> vector;
     vector v;
@@ -69,4 +70,8 @@ TEST_CASE( "vec<vec<string,alloc>> -> toString", "[toString][vector,allocator]"
     v.push_back( inner { "world" } );
     REQUIRE( Catch::toString(v) == "{ { \"hello\" }, { \"world\" } }" );
 }
+
+#ifdef __clang__
+#pragma clang diagnostic pop
 #endif
+#endif // CATCH_CPP11_OR_GREATER
diff --git a/projects/SelfTest/ToStringWhich.cpp b/projects/SelfTest/ToStringWhich.cpp
index 785c65b7..1d4aa892 100644
--- a/projects/SelfTest/ToStringWhich.cpp
+++ b/projects/SelfTest/ToStringWhich.cpp
@@ -31,43 +31,37 @@ namespace Catch {
 }
 
 // Call the overload
-TEST_CASE( "toString( has_toString )", "[toString]" )
-{
+TEST_CASE( "toString( has_toString )", "[toString]" ) {
     has_toString item;
     REQUIRE( Catch::toString( item ) == "toString( has_toString )" );
 }
 
 // Call the overload
-TEST_CASE( "toString( has_maker )", "[toString]" )
-{
+TEST_CASE( "toString( has_maker )", "[toString]" ) {
     has_maker item;
     REQUIRE( Catch::toString( item ) == "StringMaker<has_maker>" );
 }
 
 // Call the overload
-TEST_CASE( "toString( has_maker_and_toString )", "[toString]" )
-{
+TEST_CASE( "toString( has_maker_and_toString )", "[toString]" ) {
     has_maker_and_toString item;
     REQUIRE( Catch::toString( item ) == "toString( has_maker_and_toString )" );
 }
 
 // Vectors...
-TEST_CASE( "toString( vectors<has_toString )", "[toString]" )
-{
+TEST_CASE( "toString( vectors<has_toString )", "[toString]" ) {
     std::vector<has_toString> v(1);
     // This invokes template<T> toString which actually gives us '{ ? }'
     REQUIRE( Catch::toString( v ) == "{ {?} }" );
 }
 
-TEST_CASE( "toString( vectors<has_maker )", "[toString]" )
-{
+TEST_CASE( "toString( vectors<has_maker )", "[toString]" ) {
     std::vector<has_maker> v(1);
     REQUIRE( Catch::toString( v ) == "{ StringMaker<has_maker> }" );
 }
 
 
-TEST_CASE( "toString( vectors<has_maker_and_toString )", "[toString]" )
-{
+TEST_CASE( "toString( vectors<has_maker_and_toString )", "[toString]" ) {
     std::vector<has_maker_and_toString> v(1);
     // Note: This invokes the template<T> toString -> StringMaker
     REQUIRE( Catch::toString( v ) == "{ StringMaker<has_maker_and_toString> }" );