3 files changed, 17 insertions, 1 deletions
diff --git a/clang/lib/ARCMigrate/ObjCMT.cpp b/clang/lib/ARCMigrate/ObjCMT.cpp
index fe2fd6165d5..78dbd87a053 100644
--- a/clang/lib/ARCMigrate/ObjCMT.cpp
+++ b/clang/lib/ARCMigrate/ObjCMT.cpp
@@ -760,7 +760,7 @@ bool ObjCMigrateASTConsumer::migrateNSEnumDecl(ASTContext &Ctx,
                                            const EnumDecl *EnumDcl,
                                            const TypedefDecl *TypedefDcl) {
   if (!EnumDcl->isCompleteDefinition() || EnumDcl->getIdentifier() ||
-      EnumDcl->isDeprecated())
+      EnumDcl->isDeprecated() || EnumDcl->getIntegerTypeSourceInfo())
     return false;
   if (!TypedefDcl) {
     if (NSIntegerTypedefed) {
diff --git a/clang/test/ARCMT/objcmt-ns-macros.m b/clang/test/ARCMT/objcmt-ns-macros.m
index 1bf55d8ed46..851c4907588 100644
--- a/clang/test/ARCMT/objcmt-ns-macros.m
+++ b/clang/test/ARCMT/objcmt-ns-macros.m
@@ -294,3 +294,11 @@ enum {
     NSWindowToolbarButton,
     NSWindowDocumentIconButton
 };
+
+// rdar://18262255
+typedef enum : NSUInteger {
+   ThingOne,
+   ThingTwo,
+   ThingThree,
+} Thing;
+
diff --git a/clang/test/ARCMT/objcmt-ns-macros.m.result b/clang/test/ARCMT/objcmt-ns-macros.m.result
index 0b640ac3567..003b3c7f2a0 100644
--- a/clang/test/ARCMT/objcmt-ns-macros.m.result
+++ b/clang/test/ARCMT/objcmt-ns-macros.m.result
@@ -277,3 +277,11 @@ typedef NS_ENUM(NSUInteger, NSSelectionDirection) {
 };
 
 // standard window buttons
+
+// rdar://18262255
+typedef enum : NSUInteger {
+   ThingOne,
+   ThingTwo,
+   ThingThree,
+} Thing;
+