On Thu, 8 Sep 2016, Jason Merrill wrote: > Various places in GCC use negate, bit-and and compare to test whether > an integer is a power of 2, but I think it would be clearer for this > test to be wrapped in a function.
(x & -x) == x is also true for 0. Whatever the correct function semantics for 0, the comment needs to reflect them. -- Joseph S. Myers jos...@codesourcery.com
