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
Signed-off-by: Zhiwei Jiang <elish.ji...@ucloud.cn>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 3f456892d0..08f29e6b65 100644
--- a/block.c
+++ b/block.c
@@ -4866,7 +4866,7 @@ static int bdrv_replace_node_common(BlockDriverState
*from,
Transaction *tran = tran_new();
g_autoptr(GHashTable) found = NULL;
g_autoptr(GSList) refresh_list = NULL;
- BlockDriverState *to_cow_parent;
+ BlockDriverState *to_cow_parent = NULL;
int ret;
if (detach_subchain) {
--
2.25.1
