There is an Open Watcom install on this host (C:\WATCOM19), and its Windows
build compiles the compiler's own sources in about a second. Every declaration
mismatch in the unification commits was found that way; each one would
otherwise have cost a DOSBox-X boot and a full compiler build to surface, with
a DOS-side message that names the wrong thing.
Add tools/tests/test_host_syntax.py: compile all twelve sources with the flags
build-dos.bat uses (-za -wx -wcd=202) and fail on any diagnostic. It skips when
Watcom is absent, so the suite still runs elsewhere. Two structural checks come
with it -- that build-dos.bat, the Makefile and the test agree on the source
list, and that no .c under fec/src is compiled by nothing. Both would have
caught check.c and emit_c.c quietly leaving the build when the M7 wrappers
included them textually.
ferro-test now runs these and the 8.3 name check before starting the VM, and
stops if they fail.
This is not verification and does not claim to be: wcc386 targets 32-bit where
the real build is 16-bit large model, so it sees syntax, types and declarations
and nothing about code generation. The DOS build and the milestone suite remain
the gate. It only moves the cheap failures earlier.
Reviewing an M7 branch took six DOSBox-X runs to find three build blockers
that each take a second to explain. The runner threw away everything needed to
see them.
Capture the compiler build's output. Case commands were redirected to
RESULTS\<key>.LOG but `call BUILD.BAT` was not, so the step that fails first
and blocks every case left only BUILD.FAIL containing the string "FAIL". The
twelve wcl invocations inside it were invisible; finding "Unable to open
src\emit_c_m7.c" meant hand-editing build-dos.bat to add a redirect and
re-running the VM.
Record exit codes. The batch collapsed every outcome to `if errorlevel 1`, so
a compiler that aborted and one that exited 1 with a diagnostic were the same
FAIL. RC.BAT now walks a descending errorlevel ladder into RESULTS\<key>.RC
and the host derives pass/fail from it, which immediately separates an
ordinary rejection (1) from a trap (255). Note the space in `echo 0 >FILE`:
without it DOS parses `0>` as a redirect of handle 0.
Stop falling back to CONSOLE.LOG. That is DOSBox-X's own log -- display
enumeration and INT15 chatter -- so a crashed command reported fifty lines of
emulator noise instead of saying it produced no output.
Add tools/tests/test_dos_names.py. An over-long source name reaches the DOS
build as `Unable to open "src\..."`, which reads as a missing file rather than
a name FAT cannot represent, and only after a VM boot and ten object builds.
The check runs on the host in 0.03s and flags emit_c_m7.c (9-character stem)
on the branch that prompted this.
Also pass -k through to pytest so a single case can be re-run without its
whole milestone, and print the resolved ROOT at startup: an editable install
plus a git worktree will otherwise silently build a different checkout than
the one the shell is in.
Verified on master: 155 passed, unchanged. Recorded codes are 0 for success,
1 for rejections, 255 for the three bounds traps.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BScg8CF1sAAM2zVHAu5zvW
The highest supported milestone was spelled out in six places across four
files: range(1, 7) and default="m6" in test_cli.py, the same pair in
test_milestones_dosboxx.py, and through=6 in both registry.py and suite.py.
Registering M7 meant finding all six, and missing one failed silently.
Derive MAX_MILESTONE and MILESTONES from CASES instead, and move the mN
selector parser to registry.milestone_number so the pytest module stops
carrying its own copy. Adding cases for a new milestone is now enough for
ferro-test to accept --through/--only for it.
No behaviour change: MAX_MILESTONE evaluates to 6, ferro-test still advertises
{m1..m6} with default m6, and the case snapshot is unchanged.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BScg8CF1sAAM2zVHAu5zvW
registry.py was literally `cat registry_m1_m3.py registry_m4_m6.py`, which
left a duplicate `_c` definition and a stray module-level docstring at the
seam. Replace the hand-rolled append loops with five builders -- _emit, _wcl,
_triple, _rejects, _dump_ast -- and express the cases as one ordered list.
The irregularities are now parameters instead of one-off code, each with the
reason recorded:
- _triple(stem=) for M2 castwhil emitting CAST16
- _triple(build_source=) for M4 prop, which emits PROP.C but compiles
PROPTEST.C because that file #includes it
- _triple(run_suffix="trap", run_ok=False) for the M3 bounds cases
- _triple(emit_suffix=None) for M4, whose ids lack the -emit suffix
- _emit(output_first=True) for M6, which passes -o before the input
The three scattered 8.3 output-name mappings collapse into one _OUT83 table
keyed by (milestone, name). The key needs both: bad-type is BAD-TY in M2 but
BAD-TYP in M4, and bad-cond is BAD-CO in M2 but unshortened in M5. Values are
carried over verbatim -- the shortenings are inconsistent and several were
never required, but that is a separate decision.
suite.py keeps only Case and drops the all_cases forwarder, so the
registry -> suite -> registry cycle is gone along with the function-scoped
import that worked around it. dosboxx.py still imports Case from suite and is
untouched.
Verified behaviour-preserving by snapshotting (id, milestone, command,
expect_success) for all 150 cases in order before and after: diff is empty.
pytest collects the same 151 items.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BScg8CF1sAAM2zVHAu5zvW
coolguy
