Branch Coverage

/usr/include/x86_64-linux-gnu/bits/unistd.h

Criterion	Covered	Total	%
branch	4	6	66.6

line	true	false	branch
36	168	45	if (__bos0 (__buf) != (size_t) -1)
38	0	168	if (!__builtin_constant_p (__nbytes))
41	0	168	if (__nbytes > __bos0 (__buf))