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

[Vitaly Buka via cfe-commits]

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

Follow up to #121221.


>From 85581e8a0481388781b2c715fd746c908ea5fa04 Mon Sep 17 00:00:00 2001
From: Vitaly Buka <vitalybuka at google.com>
Date: Fri, 27 Dec 2024 18:32:15 -0800
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
 =?UTF-8?q?l=20version?=
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Created using spr 1.3.4
---
 clang/test/Driver/sanitizer-ld.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

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 \