From 62d556eceeeaee2db73f4ce47bfdcaafb55c5270 Mon Sep 17 00:00:00 2001
From: Florian Mayer <fmayer@google.com>
Date: Tue, 18 Nov 2025 16:05:43 -0800
Subject: [PATCH] [NFC] [test] [libcxx] Fix invalid escape sequences

```
>>> "_target-has-llvm-21 || target={{.+}}-apple-macosx{{26.[0-9](.\d+)?}}" == r"_target-has-llvm-21 || target={{.+}}-apple-macosx{{26.[0-9](.\\
d+)?}}"
<python-input-6>:1: SyntaxWarning: invalid escape sequence '\d'
True
>>> "_target-has-llvm-20 || target={{.+}}-apple-macosx{{15.[4-9](.\d+)?}}" == r"_target-has-llvm-20 || target={{.+}}-apple-macosx{{15.[4-9](.\\
d+)?}}"
<python-input-7>:1: SyntaxWarning: invalid escape sequence '\d'
True
>>> "_target-has-llvm-19 || target={{.+}}-apple-macosx{{15.[0-3](.\d+)?}}" == r"_target-has-llvm-19 || target={{.+}}-apple-macosx{{15.[0-3](.\\
d+)?}}"
<python-input-8>:1: SyntaxWarning: invalid escape sequence '\d'
True
>>> "_target-has-llvm-18 || target={{.+}}-apple-macosx{{14.[4-9](.\d+)?}}" == r"_target-has-llvm-18 || target={{.+}}-apple-macosx{{14.[4-9](.\\
d+)?}}"
<python-input-9>:1: SyntaxWarning: invalid escape sequence '\d'
```
---
 libcxx/utils/libcxx/test/features/availability.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libcxx/utils/libcxx/test/features/availability.py b/libcxx/utils/libcxx/test/features/availability.py
index c312a7cf830ed..39c6cf45a1708 100644
--- a/libcxx/utils/libcxx/test/features/availability.py
+++ b/libcxx/utils/libcxx/test/features/availability.py
@@ -29,28 +29,28 @@
     Feature(
         name="_target-has-llvm-20",
         when=lambda cfg: BooleanExpression.evaluate(
-            "_target-has-llvm-21 || target={{.+}}-apple-macosx{{26.[0-9](.\d+)?}}",
+            r"_target-has-llvm-21 || target={{.+}}-apple-macosx{{26.[0-9](.\d+)?}}",
             cfg.available_features,
         ),
     ),
     Feature(
         name="_target-has-llvm-19",
         when=lambda cfg: BooleanExpression.evaluate(
-            "_target-has-llvm-20 || target={{.+}}-apple-macosx{{15.[4-9](.\d+)?}}",
+            r"_target-has-llvm-20 || target={{.+}}-apple-macosx{{15.[4-9](.\d+)?}}",
             cfg.available_features,
         ),
     ),
     Feature(
         name="_target-has-llvm-18",
         when=lambda cfg: BooleanExpression.evaluate(
-            "_target-has-llvm-19 || target={{.+}}-apple-macosx{{15.[0-3](.\d+)?}}",
+            r"_target-has-llvm-19 || target={{.+}}-apple-macosx{{15.[0-3](.\d+)?}}",
             cfg.available_features,
         ),
     ),
     Feature(
         name="_target-has-llvm-17",
         when=lambda cfg: BooleanExpression.evaluate(
-            "_target-has-llvm-18 || target={{.+}}-apple-macosx{{14.[4-9](.\d+)?}}",
+            r"_target-has-llvm-18 || target={{.+}}-apple-macosx{{14.[4-9](.\d+)?}}",
             cfg.available_features,
         ),
     ),