test_lstmap.c compilation error with sprintf

[Olskor]

on your version of the test the program test_lsmap.c does not compile with clang 11 on debian 12 beta with this warning

✖ Compiling tests: fsoares (my own)
test_lstmap.c: In function ‘map_length’:
test_lstmap.c:8:33: error: ‘%lX’ directive writing between 1 and 16 bytes into a region of size 8 [-Werror=format-overflow=]
8 | sprintf(str, "%lX", strlen((char *)s));
| ^~~
test_lstmap.c:8:30: note: directive argument in the range [0, 9223372036854775805]
8 | sprintf(str, "%lX", strlen((char *)s));
| ^~~~~~~
test_lstmap.c:8:17: note: ‘sprintf’ output between 4 and 19 bytes into a destination of size 10
8 | sprintf(str, "__%lX", strlen((char *)s));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

[xicodomingues]

Hey!
The error seems fairly obvious.
I'll get around to fix it, but for now it's not on the top of priorities.

[xicodomingues]

This specific error should be fixed next time there is an update.