[clang] [clang][modules] Print library module manifest path. (PR #76451)

[Chuanqi Xu via cfe-commits]

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@@ -0,0 +1,15 @@
+// Test that -print-library-module-manifest-path finds the correct file.
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ChuanqiXu9 wrote:

Let's change the suffix of this file to `.cpp`

https://github.com/llvm/llvm-project/pull/76451