github.com/afumu/libc@v0.0.6/musl/src/string/strlcat.c (about)

     1  #define _BSD_SOURCE
     2  #include <string.h>
     3  
     4  size_t strlcat(char *d, const char *s, size_t n)
     5  {
     6  	size_t l = strnlen(d, n);
     7  	if (l == n) return l + strlen(s);
     8  	return l + strlcpy(d+l, s, n-l);
     9  }