BTW, GCC has a useful warning for truncation that may help code bases that use strncpy, you've probably seen this and the article, just sharing for completeness. warning: ‘__builtin_strncpy’ output truncated before terminating nul copying XYZ bytes from a string of the same length [-Wstringop-truncation] Martin's article from 2019 https://developers.redhat.com/blog/2018/05/24/detecting-string-truncation-with-gcc-8#forming_truncated_strings_with_snprintf
