================
@@ -0,0 +1,40 @@
+// Test that -print-library-module-manifest-path finds the correct file.
+
+// RUN: rm -rf %t
+// RUN: mkdir -p %t
+// RUN: touch %t/libc++.so
+// RUN: split-file %s %t
+// RUN: cd %t
+
+// RUN: %clang -print-library-module-manifest-path \
+// RUN: -stdlib=libc++ \
+// RUN: --sysroot=%t \
+// RUN: --target=x86_64-linux-gnu 2>&1 \
+// RUN: | FileCheck libcxx-no-module-json.cpp
+
+// RUN: touch %t/modules.json
+// RUN: %clang -print-library-module-manifest-path \
+// RUN: -stdlib=libc++ \
+// RUN: --sysroot=%t \
+// RUN: --target=x86_64-linux-gnu 2>&1 \
+// RUN: | FileCheck libcxx.cpp
----------------
MaskRay wrote:
`GetFilePath("libc++.so")` may return `libc++.so` (no directory), which does
not exist.
I think a better test is
```
%clang --target=x86_64-unknown-linux-gnu -ccc-install-dir
%S/Inputs/basic_linux_libcxx_tree/usr/bin -stdlib=libc++ ...
```
and create an empty file
`Inputs/basic_linux_libcxx_tree/usr/lib/x86_64-unknown-linux-gnu/libc++.so`
https://github.com/llvm/llvm-project/pull/76451
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