Warn about unsafe use of join

This commit is contained in:
Victor Zverovich 2025-10-02 12:30:55 -04:00
parent d13e5d048d
commit b5b9317a3c

View File

@ -18,6 +18,12 @@
#include "format.h"
#if FMT_HAS_CPP_ATTRIBUTE(clang::lifetimebound)
# define FMT_LIFETIMEBOUND [[clang::lifetimebound]]
#else
# define FMT_LIFETIMEBOUND
#endif
FMT_BEGIN_NAMESPACE
FMT_EXPORT
@ -821,12 +827,12 @@ auto join(Range&& r, string_view sep)
*
* **Example**:
*
* auto t = std::tuple<int, char>{1, 'a'};
* auto t = std::tuple<int, char>(1, 'a');
* fmt::print("{}", fmt::join(t, ", "));
* // Output: 1, a
*/
template <typename Tuple, FMT_ENABLE_IF(is_tuple_like<Tuple>::value)>
FMT_CONSTEXPR auto join(const Tuple& tuple, string_view sep)
FMT_CONSTEXPR auto join(const Tuple& tuple FMT_LIFETIMEBOUND, string_view sep)
-> tuple_join_view<Tuple, char> {
return {tuple, sep};
}