Xadd 2 to A
add 5

Signed-off-by: huanglei <huangl@shinemo.com>
add b
c

Signed-off-by: huanglei <huangl@shinemo.com>
aa
add a
Revert "add a"

This reverts commit 275794dbd3ca05d1e699352e370aa0d93b283578.
add x
add x