Public bug reported:
Hi,
I faced an regression-in-release breaking libvirt builds in Bionic.
I found this to be related to the recent release of
https://launchpad.net/ubuntu/+source/dwarves-dfsg/1.21-0ubuntu1~18.04
It is locally reproducible in sbuild if you build it in bionic right now.
It will break checking some structs.
Example:
(bionic-amd64)root@Keschdeichel:/build/libvirt-OfdbiS/libvirt-4.0.0/debian/build/src#
make V=1 check-local
...
enum remote_auth_type {
- REMOTE_AUTH_NONE = 0,
- REMOTE_AUTH_SASL = 1,
+ REMOTE_AUTH_NONE = 0,
+ REMOTE_AUTH_SASL = 1,
REMOTE_AUTH_POLKIT = 2,
};
There are much more, but all of them just differ in whitespace.
As if some tool was updated now breaking all the tests while the content that
matters is actually fine.
One element of this comparison lives in the source
like src/remote_protocol-structs which has:
enum remote_auth_type {
REMOTE_AUTH_NONE = 0,
REMOTE_AUTH_SASL = 1,
REMOTE_AUTH_POLKIT = 2,
};
But the generated content was changed to be aligned.
I found this to use pdwtags from dwarves which is
# apt-cache policy dwarves
dwarves:
Installed: 1.21-0ubuntu1~18.04
Candidate: 1.21-0ubuntu1~18.04
Version table:
*** 1.21-0ubuntu1~18.04 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64
Packages
500 http://archive.ubuntu.com/ubuntu bionic-proposed/universe amd64
Packages
100 /var/lib/dpkg/status
1.10-2.1build1 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
Going back to the release version
$ apt install dwarves=1.10-2.1build1
=> fixes the FTBFS.
Formerly the too old pdwtags was detected as broken in libvirt.
But the new one is accepted and fails as the output mismatches.
Old:
(bionic-amd64)root@Keschdeichel:/build/libvirt-OfdbiS/libvirt-4.0.0/debian/build/src#
/usr/bin/pdwtags.1.10-2.1build1 --verbose
remote/.libs/libvirt_driver_remote_la-remote_protocol.o | grep -A5 '^enum
remote_auth_type'
die__process_unit: DW_TAG_restrict_type (0x37) @ <0x228> not handled!
New:
(bionic-amd64)root@Keschdeichel:/build/libvirt-OfdbiS/libvirt-4.0.0/debian/build/src#
/usr/bin/pdwtags.1.21-0ubuntu1~18.04 --verbose
remote/.libs/libvirt_driver_remote_la-remote_protocol.o | grep -A5 '^enum
remote_auth_type'
enum remote_auth_type {
REMOTE_AUTH_NONE = 0,
REMOTE_AUTH_SASL = 1,
REMOTE_AUTH_POLKIT = 2,
}; /* size: 4 */
Other use cases had valid output before, but now ware aligned - they
might face similar FTFBS issues now.
For libvirt I might fix the expected result or skip the test (as it
always was skipped).
But this update of dwarves has the potential to break much more users of it
since not
only the functionality but even the output style has changed by this update.
** Affects: dwarves-dfsg (Ubuntu)
Importance: Undecided
Status: New
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: dwarves-dfsg (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: libvirt (Ubuntu Bionic)
Importance: Undecided
Status: In Progress
** Tags: regression-update
** Also affects: dwarves-dfsg (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Changed in: libvirt (Ubuntu)
Status: New => Invalid
** Changed in: libvirt (Ubuntu Bionic)
Status: New => In Progress
** Tags added: regression-update
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https://bugs.launchpad.net/bugs/1951438
Title:
Update to 1.21-0ubuntu1~18.04 FTBFSes libvirt in-release
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