================
@@ -0,0 +1,40 @@
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+// RUN: cd %t
+//
+// RUN: %clang_cc1 -std=c++20 -I %t %t/A.cppm -emit-module-interface -o
%t/A.pcm -verify
+// RUN: %clang_cc1 -std=c++20 -I %t %t/B.cppm -emit-module-interface -o
%t/B.pcm -verify
+// RUN: %clang_cc1 -std=c++20 -I %t %t/C.cpp -fmodule-file=A=%t/A.pcm
-fmodule-file=B=%t/B.pcm -fsyntax-only -verify
+
+//--- foo.h
+namespace baz {
+ using foo = char;
+ using baz::foo;
+}
+
+//--- bar.h
+class bar {
+ bar(baz::foo);
+};
+
+//--- A.cppm
+// expected-no-diagnostics
+module;
+#include "foo.h"
+export module A;
+
+//--- B.cppm
+// expected-no-diagnostics
+module;
+#include "foo.h"
+#include "bar.h"
+export module B;
----------------
ChuanqiXu9 wrote:
```suggestion
export module B;
namespace baz {
export using foo;
}
export using ::bar;
```
https://github.com/llvm/llvm-project/pull/80245
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