[Bug c/83011] -Wformat-truncation=2 difficult to avoid for non-constant bounds

[julien at trigofacile dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83011

--- Comment #8 from Julien ÉLIE <julien at trigofacile dot com> ---
"I do agree that the warning in this case is too difficult to deal with and
should be adjusted so I'm going to confirm this report on that basis."
FWIW, the same warning is still present in GCC 10.2.1.