diff --git a/clang/test/Modules/Inputs/merge-record-definition/RecordDef.framework/Headers/RecordDef.h b/clang/test/Modules/Inputs/merge-record-definition/RecordDef.framework/Headers/RecordDef.h
--- a/clang/test/Modules/Inputs/merge-record-definition/RecordDef.framework/Headers/RecordDef.h
+++ b/clang/test/Modules/Inputs/merge-record-definition/RecordDef.framework/Headers/RecordDef.h
@@ -13,3 +13,9 @@
     int y;
   };
 };
+
+typedef union _UnionRecord UnionRecord;
+union _UnionRecord {
+  int u: 2;
+  int v: 4;
+};
diff --git a/clang/test/Modules/Inputs/merge-record-definition/RecordDefCopy.framework/Headers/RecordDefCopy.h b/clang/test/Modules/Inputs/merge-record-definition/RecordDefCopy.framework/Headers/RecordDefCopy.h
--- a/clang/test/Modules/Inputs/merge-record-definition/RecordDefCopy.framework/Headers/RecordDefCopy.h
+++ b/clang/test/Modules/Inputs/merge-record-definition/RecordDefCopy.framework/Headers/RecordDefCopy.h
@@ -13,3 +13,9 @@
     int y;
   };
 };
+
+typedef union _UnionRecord UnionRecord;
+union _UnionRecord {
+  int u: 2;
+  int v: 4;
+};
diff --git a/clang/test/Modules/Inputs/merge-record-definition/RecordDefHidden.framework/Headers/Hidden.h b/clang/test/Modules/Inputs/merge-record-definition/RecordDefHidden.framework/Headers/Hidden.h
--- a/clang/test/Modules/Inputs/merge-record-definition/RecordDefHidden.framework/Headers/Hidden.h
+++ b/clang/test/Modules/Inputs/merge-record-definition/RecordDefHidden.framework/Headers/Hidden.h
@@ -13,3 +13,9 @@
     int y;
   };
 };
+
+typedef union _UnionRecord UnionRecord;
+union _UnionRecord {
+  int u: 2;
+  int v: 4;
+};
diff --git a/clang/test/Modules/merge-record-definition-nonmodular.m b/clang/test/Modules/merge-record-definition-nonmodular.m
--- a/clang/test/Modules/merge-record-definition-nonmodular.m
+++ b/clang/test/Modules/merge-record-definition-nonmodular.m
@@ -18,6 +18,8 @@
   buf.b = 1;
   AnonymousStruct strct;
   strct.x = 1;
+  UnionRecord rec;
+  rec.u = 1;
 }
 
 #ifdef MODULAR_BEFORE_TEXTUAL
@@ -31,4 +33,6 @@
   buf.c = 2;
   AnonymousStruct strct;
   strct.y = 2;
+  UnionRecord rec;
+  rec.v = 2;
 }
diff --git a/clang/test/Modules/merge-record-definition-visibility.m b/clang/test/Modules/merge-record-definition-visibility.m
--- a/clang/test/Modules/merge-record-definition-visibility.m
+++ b/clang/test/Modules/merge-record-definition-visibility.m
@@ -13,4 +13,6 @@
   buf.b = 1;
   AnonymousStruct strct;
   strct.y = 1;
+  UnionRecord rec;
+  rec.u = 1;
 }
diff --git a/clang/test/Modules/merge-record-definition.m b/clang/test/Modules/merge-record-definition.m
--- a/clang/test/Modules/merge-record-definition.m
+++ b/clang/test/Modules/merge-record-definition.m
@@ -12,6 +12,8 @@
   buf.b = 1;
   AnonymousStruct strct;
   strct.x = 1;
+  UnionRecord rec;
+  rec.u = 1;
 }
 
 #import <RecordDefCopy/RecordDefCopy.h>
@@ -21,4 +23,6 @@
   buf.c = 2;
   AnonymousStruct strct;
   strct.y = 2;
+  UnionRecord rec;
+  rec.v = 2;
 }