[libvirt] Problems with pdwtags on Ubuntu 10.04
Eric Blake
eblake at redhat.com
Tue May 18 20:53:31 UTC 2010
On 05/18/2010 11:57 AM, Matthias Bolte wrote:
> The "help avoid accidental remote_protocol.x changes" commit 180d4b2b
> added a make check rule that tried using pdwtags from the dwarves
> package to protect against accidental remote_protocol.x changes.
>
> I installed dwarves package on Ubuntu 10.04 and make check fails for me now.
What is your 'pdwtags --version'? On Fedora 13, it's v1.8pre1. Very
likely, it's just a matter of slightly varying output styles between the
two versions that needs some accommodation.
>
>
> struct remote_nonnull_network {
> remote_nonnull_string name; /* 0 8 */
> remote_uuid uuid; /* 8 16 */
>
> /* size: 24, cachelines: 1 */
> /* last cacheline: 24 bytes */
> };
>
> typedef struct remote_nonnull_network remote_nonnull_network;
On F-13, the same chunk looks like:
/* 80 */
struct remote_nonnull_network {
remote_nonnull_string name; /* 0 4 */
remote_uuid uuid; /* 4 16 */
/* size: 20, cachelines: 1, members: 2 */
/* last cacheline: 20 bytes */
}; /* size: 20 */
/* 81 */
typedef struct remote_nonnull_network remote_nonnull_network; /* size: 20 */
>
> If i run pdwtags with the --verbose flag then the output looks like this:
>
>
>
> /* <44e> remote/remote_protocol.h:71 */
> typedef struct remote_nonnull_domain remote_nonnull_domain;
>
> /* <459> remote/remote_protocol.h:73 */
> struct remote_nonnull_network {
> remote_nonnull_string name; /* 0 8 */
> remote_uuid uuid; /* 8 16 */
>
> /* size: 24, cachelines: 1 */
> /* last cacheline: 24 bytes */
> };
And here:
/* 80 */
/* <0> (null):0 */
struct remote_nonnull_network {
remote_nonnull_string name; /* 0 4 */
remote_uuid uuid; /* 4 16 */
/* size: 20, cachelines: 1, members: 2 */
/* last cacheline: 20 bytes */
}; /* size: 20 */
/* 81 */
/* <0> (null):0 */
typedef struct remote_nonnull_network remote_nonnull_network; /* size: 20 */
>
> Now there are "markers" that can be used for splitting, but they still
> differ from the expected format.
>
> The attached patch fixes this issue for me on Ubuntu, but I doubt that
> this can be the general solution.
Jim, any ideas?
--
Eric Blake eblake at redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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