Index: lldb/source/Core/ValueObject.cpp
===================================================================
--- lldb/source/Core/ValueObject.cpp
+++ lldb/source/Core/ValueObject.cpp
@@ -378,8 +378,11 @@
   {
     ExecutionContext exe_ctx(GetExecutionContextRef());
     Value tmp_value(m_value);
+    bool is_unsigned = !scalar.IsSigned();
     scalar = tmp_value.ResolveValue(&exe_ctx);
     if (scalar.IsValid()) {
+      if (is_unsigned)
+        scalar.MakeUnsigned();
       const uint32_t bitfield_bit_size = GetBitfieldBitSize();
       if (bitfield_bit_size)
         return scalar.ExtractBitfield(bitfield_bit_size,
@@ -1144,7 +1147,6 @@
     if (ResolveValue(scalar)) {
       if (success)
         *success = true;
-      scalar.MakeUnsigned();
       return scalar.ULongLong(fail_value);
     }
     // fallthrough, otherwise...
Index: lldb/test/API/functionalities/data-formatter/boolreference/TestFormattersBoolRefPtr.py
===================================================================
--- lldb/test/API/functionalities/data-formatter/boolreference/TestFormattersBoolRefPtr.py
+++ lldb/test/API/functionalities/data-formatter/boolreference/TestFormattersBoolRefPtr.py
@@ -75,3 +75,6 @@
                     substrs=['NO'])
         if not(isArm):
             self.expect('frame variable unset', substrs=['12'])
+
+        self.expect('p myField',
+                   substrs=['(BoolBitFields)', 'fieldOne = NO', 'fieldTwo = YES', 'fieldThree = NO', 'fieldFour = NO', 'fieldfive = YES'])
Index: lldb/test/API/functionalities/data-formatter/boolreference/main.mm
===================================================================
--- lldb/test/API/functionalities/data-formatter/boolreference/main.mm
+++ lldb/test/API/functionalities/data-formatter/boolreference/main.mm
@@ -1,12 +1,20 @@
 #import <Foundation/Foundation.h>
 
+typedef struct {
+    BOOL fieldOne : 1;
+    BOOL fieldTwo : 1;
+    BOOL fieldThree : 1;
+    BOOL fieldFour : 1;
+    BOOL fieldfive : 1;
+} BoolBitFields;
+
 int main (int argc, const char * argv[])
 {
-    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
+  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
 
 	BOOL yes  = YES;
 	BOOL no = NO;
-    BOOL unset = 12;
+  BOOL unset = 12;
 	
 	BOOL &yes_ref = yes;
 	BOOL &no_ref = no;
@@ -16,6 +24,10 @@
 	BOOL* no_ptr = &no;
 	BOOL* unset_ptr = &unset;
 
+  BoolBitFields myField = {0};
+  myField.fieldTwo = YES;
+  myField.fieldfive = YES;
+
     [pool drain];// Set break point at this line.
     return 0;
 }