[clang] [clang][test] Add missing FileCheck pipe in cxx20-module-directive.cpp (PR #185315)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Fady Farag (iidmsa)

<details>
<summary>Changes</summary>

The test had CHECK directives that were never executed because the RUN line did not pipe output to FileCheck.

---
Full diff: https://github.com/llvm/llvm-project/pull/185315.diff


1 Files Affected:

- (modified) clang/test/Lexer/cxx20-module-directive.cpp (+1-1) 


``````````diff
diff --git a/clang/test/Lexer/cxx20-module-directive.cpp b/clang/test/Lexer/cxx20-module-directive.cpp
index e420ff4b11407..10379ba9867b9 100644
--- a/clang/test/Lexer/cxx20-module-directive.cpp
+++ b/clang/test/Lexer/cxx20-module-directive.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -E -std=c++20 %s
+// RUN: %clang_cc1 -E -std=c++20 %s | FileCheck %s
 
 // CHECK: export __preprocessed_module M;
 // CHECK-NEXT: export __preprocessed_import K;

``````````

</details>


https://github.com/llvm/llvm-project/pull/185315