It seems that on macOS, when using Clang with libc++, linking fails with call to deleted function 'from_chars' for floating-point types. I created a Compiler Explorer example to demonstrate the issue:
https://godbolt.org/z/3oar38qG9
The error indicates that std::from_chars is only enabled for integral types in this libc++ version, and the floating-point overload is not available. (clang 20 supported from_chars)
Given this, I'm wondering whether we should fall back to std::strtof / std::strtod / std::strtold when parsing floating-point numbers. What do you think?
It seems that on macOS, when using Clang with libc++, linking fails with
call to deleted function 'from_chars'for floating-point types. I created a Compiler Explorer example to demonstrate the issue:https://godbolt.org/z/3oar38qG9
The error indicates that
std::from_charsis only enabled for integral types in this libc++ version, and the floating-point overload is not available. (clang 20 supported from_chars)Given this, I'm wondering whether we should fall back to
std::strtof/std::strtod/std::strtoldwhen parsing floating-point numbers. What do you think?