Closes out the field report that prompted 2026.05.08.2. Full integration
suite, same commit, all green:
Informix 15.0.1.0.3DE 241 / 241
Informix 14.10.FC7W1DE 241 / 241
Informix 12.10.FC12W1DE 241 / 241
Including smart-LOB. The 28-type round-trip produces byte-identical wire
output on all three — same type codes, same encoded lengths, same values.
There is no 12-vs-14-vs-15 wire difference for anything we support.
Testing three versions by hand was tedious and undocumented, which is
part of why it never happened. Now:
make ifx-legacy-up 12.10 on 9089, 14.10 on 9090, alongside 15 on 9088
make ifx-legacy-setup blobspace1 + sbspace1 in both
make test-matrix the suite against all three
tests/setup-spaces.sh absorbs the per-image differences that made this
annoying: 12.10/14.10 use a flat INFORMIXDIR while 15 nests a versioned
subdirectory; ONCONFIG is named differently across images; `bash -lc`
wipes INFORMIXDIR and makes every utility fail with a misleading
"Unable to read $INFORMIXDIR (/usr/informix)"; and 12.10 DE ships no
ontape at all (the level-0 archive turns out to be unnecessary anyway).
Without blobspace1/sbspace1, ~21 tests fail with errors that look like
driver bugs and aren't.
The documented workflow was validated from scratch — containers removed,
recreated via compose, spaces created via the script, matrix run — rather
than written up afterward from whichever commands happened to work. The
README claim this replaces was wrong precisely because nobody did that.
