#1121023 sa-exim: local_scan() library failure\n/usr/lib/exim4/local_scan/sa-exim.so: undefined symbol: expand_string

Package:
sa-exim
Source:
sa-exim
Description:
SpamAssassin filter for Exim
Submitter:
Omen Wild
Date:
2026-01-03 02:29:02 UTC
Severity:
normal
Tags:
#1121023#5
Date:
2025-11-19 17:15:06 UTC
From:
To:
Dear Maintainer,

sa-exim appears to be incompatible with exim4 4.99. I upgraded
yesterday, and my exim4 mainlog filled with messages like this:

2025-11-19 08:33:43 1vLl7n-0000000Ei4N-2kmb local_scan() library open failed - message temporarily rejected
2025-11-19 08:33:43 1vLl7n-0000000Ei4N-2kmb F=bounces+848413-f909-me@sgmail.github.com H=o6.sgmail.github.com [192.254.113.101] P=esmtps temporarily rejected by local_scan(): Local configuration error - local_scan() library failure\n/usr/lib/exim4/local_scan/sa-exim.so: undefined symbol: expand_string

I tried to rebuild sa-exim, but that fails with various compilation errors with exim4 4.99.

Downgrading to 4.98.2 made it work again.
#1121023#10
Date:
2025-11-28 12:37:13 UTC
From:
To:
[...]

Hello,

there was a bug in exim 4.99 up to 4.99-4, expand_string was not
available for local_scan. Also the ABI changed (expand_string is a macro
now) and the API also changed:
-extern int     smtp_fflush(void);
+extern int     smtp_fflush(BOOL);

As a side-effect of the change to expand_string() incorrect signedness
of the args to expand_string() (signed char *) causes a compilation
error.

exim4 4.99-5 and newer bumped LOCAL_SCAN_ABI_VERSION_MINOR this version
cannot be installed together with sa-exim 4.2.1-22

cu Andreas
#1121023#15
Date:
2025-12-03 06:40:10 UTC
From:
To:
On 2025-11-28 Andreas Metzler <ametzler@bebt.de> wrote:
[...]

Hello,

Find attached an (almost untested) patch to fix the FTBFS.

I do not intend to NMU since I would rather drop the localscan_dlopen
patch to exim (and sa-exim).

cu Andreas
#1121023#22
Date:
2026-01-03 01:44:07 UTC
From:
To:
Hi Andreas,

I seem to have dropped out of the To: for the patch
(expand_string_unsigned_char.diff), but I dug it out of the bug report
and can confirm that I can successfully build sa-exim with 4.99.1-1 and
that it seems to work correctly.

Thank you,
   Omen