From 985e33a768ebbe3316dc9db8cb580bfdcb9ec0d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Botond=20D=C3=A9nes?= <bdenes@scylladb.com>
Date: Thu, 6 Apr 2023 07:36:25 -0400
Subject: [PATCH] utils: s/std::regex/boost::regex/

The former is prone to producing stack-overflow as it uses recursion in
it match implementation.

The migration is entirely mechanical.
---
 utils/config_file_impl.hh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/utils/config_file_impl.hh b/utils/config_file_impl.hh
index d3fab1a435..3b15ecde01 100644
--- a/utils/config_file_impl.hh
+++ b/utils/config_file_impl.hh
@@ -10,7 +10,7 @@
 #pragma once
 
 #include <iterator>
-#include <regex>
+#include <boost/regex.hpp>
 
 #include <yaml-cpp/yaml.h>
 #include <boost/any.hpp>
@@ -107,11 +107,11 @@ void validate(boost::any& out, const std::vector<std::string>& in, std::unordere
         out = boost::any(map_type());
     }
 
-    static const std::regex key(R"foo((?:^|\:)([^=:]+)=)foo");
+    static const boost::regex key(R"foo((?:^|\:)([^=:]+)=)foo");
 
     auto* p = boost::any_cast<map_type>(&out);
     for (const auto& s : in) {
-        std::sregex_iterator i(s.begin(), s.end(), key), e;
+        boost::sregex_iterator i(s.begin(), s.end(), key), e;
 
         if (i == e) {
             throw boost::program_options::invalid_option_value(s);