socket: 0.569 semantic: 0.536 graphic: 0.520 device: 0.469 network: 0.458 files: 0.282 performance: 0.251 vnc: 0.209 debug: 0.172 PID: 0.112 permissions: 0.103 KVM: 0.101 boot: 0.095 other: 0.063 hw/block/onenand.c:520: dead code ? qemu/hw/block/onenand.c:520] -> [qemu/hw/block/onenand.c:521]: (warning) Opposite inner 'if' condition leads to a dead code block. Source code is for (b = 0; b < s->blocks; b ++) { if (b >= s->blocks) { s->status |= ONEN_ERR_CMD; break; } I am not sure if the if condition can be merely deleted, or something more complex needs to be implemented. Recent qemu trunk. Fix has now been included here: https://git.qemu.org/?p=qemu.git;a=commitdiff;h=dbfa934106d22402d