Hi All, Not sure if it has been reported, builds of arm64 with clang failed to build next-20220811 with the error: drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:201:3: error: expected expression struct virtio_blk_discard_write_zeroes range; ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:204:25: error: use of undeclared identifier 'range' if (to_pull != sizeof(range)) { ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:207:21: error: use of undeclared identifier 'range' to_pull, sizeof(range)); ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:212:60: error: use of undeclared identifier 'range' bytes = vringh_iov_pull_iotlb(&vq->vring, &vq->out_iov, &range, ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:222:38: error: use of undeclared identifier 'range' sector = vdpasim64_to_cpu(vdpasim, range.sector); ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:224:43: error: use of undeclared identifier 'range' num_sectors = vdpasim32_to_cpu(vdpasim, range.num_sectors); ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:225:37: error: use of undeclared identifier 'range' flags = vdpasim32_to_cpu(vdpasim, range.flags); ^ drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:202:7: error: mixing declarations and code is incompatible with standards before C99 [-Werror,-Wdeclaration-after-statement] u32 num_sectors, flags; ^ 8 errors generated. git bisect pointed to d79b32c2e4a4 ("vdpa_sim_blk: add support for discard and write-zeroes"). And, reverting that commit has fixed the build failure. I will be happy to test any patch or provide any extra log if needed. -- Regards Sudip