Hello Tejun, On 03/03/2015 02:46 PM, Tejun Heo wrote: > On Tue, Mar 03, 2015 at 09:59:47AM +0100, Javier Martinez Canillas wrote: >> When building cgroup, GCC warns that the root variable >> may be used uninitialized in the cgroup_mount function. >> >> kernel/cgroup.c: In function ‘cgroup_mount’: >> kernel/cgroup.c:1886:13: warning: ‘root’ may be used uninitialized in this >> function [-Wuninitialized] >> kernel/cgroup.c:1742:22: note: ‘root’ was declared here >> >> This can never happen because if the struct cgroup_root >> can't be allocated, ret is set to -ENOMEM and the error >> returned so the code using root is not reachable. But >> set root to NULL just to silence the compiler warning. > > Which compiler are you on? >
Yeah, I noticed that I was using a pretty old 4.7.2 GCC on that machine and the warning indeed is not seen with 4.9.1. Sorry for the noise... > Thanks. > Best regard, Javier -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
