Thanks for the comment. Yes sprintf was writing one extra character to the buffer. Fixed it now.

There is an error in the 3. basic test in c.

Test:

do_test(UINT32_MAX, "255.255.255.255");

Error:

for uint32 = 4294967295 expected:
"p"
but got:
"255.255.255.255"

Other random tests also error out randomly:

for uint32 = 1926558421 expected:
"�"
but got:
"114.212.242.213"