Merge branch 'trunk' into with-sqlite

CMakeLists.txt

@@ -373,7 +373,7 @@ else()
 endif()
 
 if(NOT STD_CHARCONV_COMPILING)
-	target_link_libraries(cifpp PUBLIC FastFloat::fast_float)
+	target_link_libraries(cifpp PRIVATE FastFloat::fast_float)
 endif()
 
 # if(BUILD_SQLITE_INTERFACE)

src/validate.cpp

@@ -33,6 +33,7 @@
 #include <format>
 #include <iomanip>
 #include <iostream>
+#include <mutex>
 
 // The validator depends on regular expressions. Unfortunately,
 // the implementation of std::regex in g++ is buggy and crashes
@@ -75,6 +76,7 @@ struct regex_impl
   private:
 	pcre2_code *m_rx = nullptr;
 	pcre2_match_data *m_data = nullptr;
+	mutable std::mutex m_mutex;
 };
 
 regex_impl::regex_impl(std::string_view rx)
@@ -95,6 +97,8 @@ regex_impl::regex_impl(std::string_view rx)
 
 regex_impl::~regex_impl()
 {
+	std::unique_lock lock(m_mutex);
+
 	if (m_data)
 		pcre2_match_data_free(m_data);
 
@@ -104,6 +108,8 @@ regex_impl::~regex_impl()
 
 bool regex_impl::match(std::string_view v) const
 {
+	std::unique_lock lock(m_mutex);
+
 	bool result = false;
 
 	if (int rc = pcre2_match(m_rx, (PCRE2_SPTR)v.data(), v.length(), 0, 0, m_data, nullptr); rc >= 0)