When compiling with the "-Wnull-dereference" flag, the compiler is
not smart enough to realize that anytime the ebitmap_t node field is
NULL, the highbit field will equal 0. This causes false positive
warnings to be generated.
Change the ebitmap_is_empty() and ebitmap_length() macros to check
for the node being NULL instead of just relying on the value of
highbit to eliminate these false warnings.
Signed-off-by: James Carter <jwcart2@gmail.com>
Acked-by: Petr Lautrbach <lautrbach@redhat.com>
cd575089db