--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang-tools-extra/test/clang-reorder-fields/CStructAmbiguousName.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,18 @@
+// RUN: clang-reorder-fields -record-name ::Foo -fields-order y,x %s -- | FileCheck %s
+
+struct Foo {
+  int x;    // CHECK:      {{^  double y;}}
+  double y; // CHECK-NEXT: {{^  int x;}}
+};
+
+namespace bar {
+struct Foo {
+  int x;    // CHECK:      {{^  int x;}}
+  double y; // CHECK-NEXT: {{^  double y;}}
+};
+} // end namespace bar
+
+int main() {
+  bar::Foo foo = { 1, 1.7 }; // CHECK: {{^  bar::Foo foo = { 1, 1.7 };}}
+  return 0;
+}