Fix a ubsan warning in addr_mask_get_bits

ubsan doesn't like us to do (1u<<32) when 32 is wider than
unsigned.  Fortunately, we already special-case
addr_mask_get_bits(0), so we can just change the loop bounds.
This commit is contained in:
Nick Mathewson 2014-03-18 10:49:39 -04:00
parent 2aea6ca326
commit dfdeb6418d

View File

@ -1585,7 +1585,7 @@ addr_mask_get_bits(uint32_t mask)
return 0;
if (mask == 0xFFFFFFFFu)
return 32;
for (i=0; i<=32; ++i) {
for (i=1; i<=32; ++i) {
if (mask == (uint32_t) ~((1u<<(32-i))-1)) {
return i;
}