3 files changed, 38 insertions, 1 deletions
diff --git a/test/ASTMerge/struct/Inputs/struct1.c b/test/ASTMerge/struct/Inputs/struct1.c
index af2af8abc42a..0f3e8b9bc3eb 100644
--- a/test/ASTMerge/struct/Inputs/struct1.c
+++ b/test/ASTMerge/struct/Inputs/struct1.c
@@ -61,3 +61,19 @@ struct {
   Int i;
   float f;
 } x11;
+
+// Matches
+typedef struct {
+  Int i;
+  float f;
+} S12;
+
+S12 x12;
+
+// Mismatch
+typedef struct {
+  Float i; // Mismatch here.
+  float f;
+} S13;
+
+S13 x13;
diff --git a/test/ASTMerge/struct/Inputs/struct2.c b/test/ASTMerge/struct/Inputs/struct2.c
index 4b43df71d8d6..7fe17a576b23 100644
--- a/test/ASTMerge/struct/Inputs/struct2.c
+++ b/test/ASTMerge/struct/Inputs/struct2.c
@@ -58,3 +58,19 @@ struct {
   int i;
   float f;
 } x11;
+
+// Matches
+typedef struct {
+  int i;
+  float f;
+} S12;
+
+S12 x12;
+
+// Mismatch
+typedef struct {
+  int i; // Mismatch here.
+  float f;
+} S13;
+
+S13 x13;
diff --git a/test/ASTMerge/struct/test.c b/test/ASTMerge/struct/test.c
index 4f41cea26b18..ed7750f6becc 100644
--- a/test/ASTMerge/struct/test.c
+++ b/test/ASTMerge/struct/test.c
@@ -39,4 +39,9 @@
 // CHECK: struct2.c:53:43: note: field 'Deeper' has type 'struct DeeperError *' here
 // CHECK: struct2.c:54:3: error: external variable 'xDeep' declared with incompatible types in different translation units ('struct DeepError' vs. 'struct DeepError')
 // CHECK: struct1.c:57:3: note: declared here with type 'struct DeepError'
-// CHECK: 8 warnings and 7 errors generated
+// CHECK: struct1.c:74:9: warning: type 'S13' has incompatible definitions in different translation units
+// CHECK: struct1.c:75:9: note: field 'i' has type 'Float' (aka 'float') here
+// CHECK: struct2.c:72:7: note: field 'i' has type 'int' here
+// CHECK: struct2.c:76:5: error: external variable 'x13' declared with incompatible types in different translation units ('S13' vs. 'S13')
+// CHECK: struct1.c:79:5: note: declared here with type 'S13'
+// CHECK: 9 warnings and 8 errors generated