[Bug libstdc++/81912] std::distance not constexpr in C++17 mode

[gcc at hazardy dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81912

--- Comment #1 from Björn Schäpers <gcc at hazardy dot de> ---
Created attachment 42019
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42019&action=edit
The preprocessed test file.