[clang] [Driver] Make regex stricter (PR #121243)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang

@llvm/pr-subscribers-clang-driver

Author: Vitaly Buka (vitalybuka)

<details>
<summary>Changes</summary>

Follow up to #<!-- -->121221.


---
Full diff: https://github.com/llvm/llvm-project/pull/121243.diff


1 Files Affected:

- (modified) clang/test/Driver/sanitizer-ld.c (+8-4) 


``````````diff
diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c
index 4e4cfbae27e113..17766cef86d2a8 100644
--- a/clang/test/Driver/sanitizer-ld.c
+++ b/clang/test/Driver/sanitizer-ld.c
@@ -1,9 +1,13 @@
 // Test sanitizers ld flags.
 
-// Match all libclang_rt, excluding platform-inconsistent libs, like
-// libclang_rt.builtins, libclang_rt.osx etc.
-
-// DEFINE: %{filecheck} = FileCheck %s --implicit-check-not="libclang_rt.{{([^.]+san|scudo|cfi|safestack|stats|fuzzer|undefined)}}"
+// Match all sanitizer related libclang_rt, we are not interested in
+// libclang_rt.builtins, libclang_rt.osx, libclang_rt.ios, libclang_rt.watchos
+// etc.
+//
+// If we need to add sanitizer with name starting with excluded laters, e.g.
+// `bsan`, we can extend expression like this: `([^iow]|b[^u])`.
+//
+// DEFINE: %{filecheck} = FileCheck %s --implicit-check-not="libclang_rt.{{([^biow])}}"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=i386-unknown-linux -fuse-ld=ld -fsanitize=address \

``````````

</details>


https://github.com/llvm/llvm-project/pull/121243