Plugin ABI compat between v2.3.8 and v2.3.9

[Alexander Strasser]

Hi!

On 2020-06-16 12:37 -0000, Stuart Henderson wrote:
> On 2020-06-15, Alexander Strasser <eclipse7 at gmx.net> wrote:
> > I had some imap crashes (sig11) starting at the end of 2019 after
> > an upgrade of dovecot.
> >
> > I found out, that I didn't have any problems using version v2.3.8,
> > but any version v2.3.9 and higher would trigger the crashes.
> >
> > After investigating more deeply and creating a core dump, I saw
> > that the crash happened in an external plugin fetchmail_wakeup[1].
> >
> > After recompiling that plugin with up to date dovecot headers,
> > I didn't get crashes anymore.
> >
> > So I suspect there were ABI incompatible changes and it was
> > forgotten to bump the minimum Plugin-ABI version supported.
>
> dovecot-2.3.8/configure
> #define DOVECOT_ABI_VERSION "2.3.ABIv8($PACKAGE_VERSION)"
>
> dovecot-2.3.9/configure
> #define DOVECOT_ABI_VERSION "2.3.ABIv9($PACKAGE_VERSION)"
>
> Did you disable version checking? (version_ignore = yes)

Thanks for the hint.

I couldn't find version_ignore anywhere in the configs.
I also don't remember having changed it.

It's interesting that the ABI check didn't snap.


  Alexander