From a40c96df3acc118b4b3b1364cdcc295b7fc0cf49 Mon Sep 17 00:00:00 2001
From: Christian Mazakas <christian.mazakas@gmail.com>
Date: Mon, 9 Dec 2024 10:16:51 -0800
Subject: [PATCH] fix negation operator creating an enum with an invalid value

---
 include/boost/regex/v5/match_flags.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/regex/v5/match_flags.hpp b/include/boost/regex/v5/match_flags.hpp
index d653d172..a2e7e46d 100644
--- a/include/boost/regex/v5/match_flags.hpp
+++ b/include/boost/regex/v5/match_flags.hpp
@@ -101,7 +101,7 @@ BOOST_REGEX_MODULE_EXPORT inline match_flags operator|(match_flags m1, match_fla
 BOOST_REGEX_MODULE_EXPORT inline match_flags operator^(match_flags m1, match_flags m2)
 { return static_cast<match_flags>(static_cast<std::int32_t>(m1) ^ static_cast<std::int32_t>(m2)); }
 BOOST_REGEX_MODULE_EXPORT inline match_flags operator~(match_flags m1)
-{ return static_cast<match_flags>(~static_cast<std::int32_t>(m1)); }
+{ return static_cast<match_flags>(~static_cast<std::int32_t>(m1) & static_cast<std::int32_t>(match_not_any)); }
 BOOST_REGEX_MODULE_EXPORT inline match_flags& operator&=(match_flags& m1, match_flags m2)
 { m1 = m1&m2; return m1; }
 BOOST_REGEX_MODULE_EXPORT inline match_flags& operator|=(match_flags& m1, match_flags m2)