From 11672577debb4880edb5641c470c78175b121bcb Mon Sep 17 00:00:00 2001
From: Andre Bogus <bogusandre@gmail.com>
Date: Thu, 8 Oct 2020 01:07:00 +0200
Subject: [PATCH] Fix unicode regexen with bytes::Regex

fixes #6005
---
 clippy_lints/src/regex.rs | 2 +-
 tests/ui/regex.rs         | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/clippy_lints/src/regex.rs b/clippy_lints/src/regex.rs
index dfc158661cbf6..95594e38c9ec1 100644
--- a/clippy_lints/src/regex.rs
+++ b/clippy_lints/src/regex.rs
@@ -143,7 +143,7 @@ fn check_set<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, utf8: bool) {
 
 fn check_regex<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, utf8: bool) {
     let mut parser = regex_syntax::ParserBuilder::new()
-        .unicode(utf8)
+        .unicode(true)
         .allow_invalid_utf8(!utf8)
         .build();
 
diff --git a/tests/ui/regex.rs b/tests/ui/regex.rs
index 9767e5bf76a85..f7f3b195ccc18 100644
--- a/tests/ui/regex.rs
+++ b/tests/ui/regex.rs
@@ -71,6 +71,9 @@ fn trivial_regex() {
     let non_trivial_ends_with = Regex::new("foo|bar");
     let non_trivial_binary = BRegex::new("foo|bar");
     let non_trivial_binary_builder = BRegexBuilder::new("foo|bar");
+
+    // #6005: unicode classes in bytes::Regex
+    let a_byte_of_unicode = BRegex::new(r"\p{C}");
 }
 
 fn main() {