Index: include/clang/Sema/DeclSpec.h
===================================================================
--- include/clang/Sema/DeclSpec.h	(revision 135029)
+++ include/clang/Sema/DeclSpec.h	(working copy)
@@ -1097,6 +1097,10 @@
     /// If this is an invalid location, there is no ref-qualifier.
     unsigned RefQualifierLoc;
 
+    /// \brief The location of the 'mutable' qualifer in a lambda-declarator, if
+    /// any.
+    unsigned MutableLoc;
+
     /// \brief When ExceptionSpecType isn't EST_None or EST_Delayed, the
     /// location of the keyword introducing the spec.
     unsigned ExceptionSpecLoc;
@@ -1158,10 +1162,19 @@
       return SourceLocation::getFromRawEncoding(RefQualifierLoc);
     }
 
+    /// \brief Retrieve the location of the 'mutable' qualifier, if any.
+    SourceLocation getMutableLoc() const {
+      return SourceLocation::getFromRawEncoding(MutableLoc);
+    }
+
     /// \brief Determine whether this function declaration contains a 
     /// ref-qualifier.
     bool hasRefQualifier() const { return getRefQualifierLoc().isValid(); }
 
+    /// \brief Determine whether this lambda-declarator contains a 'mutable'
+    /// qualifier.
+    bool hasMutableQualifier() const { return getMutableLoc().isValid(); }
+
     /// \brief Get the type of exception specification this function has.
     ExceptionSpecificationType getExceptionSpecType() const {
       return static_cast<ExceptionSpecificationType>(ExceptionSpecType);
@@ -1285,6 +1298,7 @@
                                      unsigned TypeQuals, 
                                      bool RefQualifierIsLvalueRef,
                                      SourceLocation RefQualifierLoc,
+                                     SourceLocation MutableLoc,
                                      ExceptionSpecificationType ESpecType,
                                      SourceLocation ESpecLoc,
                                      ParsedType *Exceptions,
Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp	(revision 135029)
+++ lib/Sema/SemaDecl.cpp	(working copy)
@@ -6588,6 +6588,7 @@
   Declarator D(DS, Declarator::BlockContext);
   D.AddTypeInfo(DeclaratorChunk::getFunction(false, false, SourceLocation(), 0,
                                              0, 0, true, SourceLocation(),
+                                             SourceLocation(),
                                              EST_None, SourceLocation(),
                                              0, 0, 0, 0, Loc, Loc, D),
                 DS.getAttributes(),
Index: lib/Sema/DeclSpec.cpp
===================================================================
--- lib/Sema/DeclSpec.cpp	(revision 135029)
+++ lib/Sema/DeclSpec.cpp	(working copy)
@@ -149,6 +149,7 @@
                                              unsigned TypeQuals,
                                              bool RefQualifierIsLvalueRef,
                                              SourceLocation RefQualifierLoc,
+                                             SourceLocation MutableLoc,
                                              ExceptionSpecificationType
                                                  ESpecType,
                                              SourceLocation ESpecLoc,
@@ -174,6 +175,7 @@
   I.Fun.ArgInfo                 = 0;
   I.Fun.RefQualifierIsLValueRef = RefQualifierIsLvalueRef;
   I.Fun.RefQualifierLoc         = RefQualifierLoc.getRawEncoding();
+  I.Fun.MutableLoc              = MutableLoc.getRawEncoding();
   I.Fun.ExceptionSpecType       = ESpecType;
   I.Fun.ExceptionSpecLoc        = ESpecLoc.getRawEncoding();
   I.Fun.NumExceptions           = 0;
Index: lib/Sema/SemaType.cpp
===================================================================
--- lib/Sema/SemaType.cpp	(revision 135029)
+++ lib/Sema/SemaType.cpp	(working copy)
@@ -555,6 +555,7 @@
                              /*args*/ 0, 0,
                              /*type quals*/ 0,
                              /*ref-qualifier*/true, SourceLocation(),
+                             /*mutable qualifier*/SourceLocation(),
                              /*EH*/ EST_None, SourceLocation(), 0, 0, 0, 0,
                              /*parens*/ loc, loc,
                              declarator));
Index: lib/Parse/ParseDecl.cpp
===================================================================
--- lib/Parse/ParseDecl.cpp	(revision 135029)
+++ lib/Parse/ParseDecl.cpp	(working copy)
@@ -3761,6 +3761,7 @@
                                              DS.getTypeQualifiers(),
                                              RefQualifierIsLValueRef,
                                              RefQualifierLoc,
+                                             /*MutableLoc=*/SourceLocation(),
                                              ESpecType, ESpecRange.getBegin(),
                                              DynamicExceptions.data(),
                                              DynamicExceptionRanges.data(),
Index: lib/Parse/ParseExpr.cpp
===================================================================
--- lib/Parse/ParseExpr.cpp	(revision 135029)
+++ lib/Parse/ParseExpr.cpp	(working copy)
@@ -2233,6 +2233,7 @@
                                                        SourceLocation(),
                                                        0, 0, 0,
                                                        true, SourceLocation(),
+                                                       SourceLocation(),
                                                        EST_None,
                                                        SourceLocation(),
                                                        0, 0, 0, 0,
