On Sun, 13 Jun 2021 at 15:20, Zhiwei Jiang <elish.ji...@ucloud.cn> wrote: > > when i compile this file with some error message > ../block.c: In function ‘bdrv_replace_node_common’: > ../block.c:4903:9: error: ‘to_cow_parent’ may be used > uninitialized in this function [-Werror=maybe-uninitialized] > bdrv_remove_filter_or_cow_child(to_cow_parent, tran); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > cc1: all warnings being treated as errors
Could you provide the compiler version when reporting fails-to-compile issues, please? (This is useful for us to get an idea of whether the problem is an old compiler that's not smart enough to figure out that something's not used uninitialized, or a new compiler that does more checking.) thanks -- PMM
