glibc declare ftruncate() with attribute warn_unused_result, so result must be "checked", otherwise we get: virtio/9p.c:487:6: error: variable ‘res’ set but not used [-Werror=unused-but-set-variable] or virtio/9p.c:496:12: error: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Werror=unused-result] Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx> --- tools/kvm/virtio/9p.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/tools/kvm/virtio/9p.c b/tools/kvm/virtio/9p.c index d927688..4586f66 100644 --- a/tools/kvm/virtio/9p.c +++ b/tools/kvm/virtio/9p.c @@ -495,6 +495,7 @@ static void virtio_p9_wstat(struct p9_dev *p9dev, if (wstat.length != -1UL) res = ftruncate(fid->fd, wstat.length); + (void)res; /* To plug the warning. FIXME what if ftruncate fails? */ if (wstat.mode != -1U) chmod(fid->abs_path, wstat.mode & 0xFFFF); -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
