Re: [libvirt] [PATCH] build: work around gcc 6.0 warnings

gcc 6.0 added an annoying warning: fdstream.c: In function 'virFDStreamWrite': fdstream.c:390:29: error: logical 'or' of equal expressions [-Werror=logical-op] if (errno == EAGAIN || errno == EWOULDBLOCK) { ^~ fdstream.c: In function 'virFDStreamRead': fdstream.c:440:29: error: logical 'or' of equal expressions [-Werror=logical-op] if (errno == EAGAIN || errno == EWOULDBLOCK) { ^~ This makes it impossible to build out-of-the-box on rawhide, and we aren't guaranteed that the gcc bug will be fixed in a timely manner: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69602 So work around it by further complicating the logic to thwart the compiler. Signed-off-by: Eric Blake <eblake(a)redhat.com&gt; --- This is a build-breaker fix for rawhide; but I'll wait for a day for any reasons why I should not push it during freeze.