Hi, strlcpy and strlcat were introduced in glibc 2.38[1]. At the moment Ubuntu noble has 2.39 and Debian unstable - 2.37. The issue will become relevant for Debian once glibc 2.38 is introduced to unstable.
Best Regards, Vladimir. [1] https://sourceware.org/pipermail/libc-alpha/2023-July/150524.html