Go 1.26.5 maps each test binary's stdout and stderr to the same product writer. Teach the captured executor to share one open file description for byte-equal output paths, then make directory test products emit that one ordered capture on coordinator stdout. Build captures and inherited-stdio routes remain unchanged.\n\nKeep the executor mechanism, package policy, native Cstage/WWstage proof, and normative contract together so every commit preserves the observable test-output behavior.
Build w6a and w6l from package-main directories and expose the wcc backend through a narrow package API so w6c and wwdump no longer import implementation files. Retarget the remaining load-bearing fixtures and example sources to directory packages; retain the one intentional flat compiler collision as an explicitly composed raw unit.
The TODO(#11) silent-accept of `for (let (a, a) .. xs)` rested on a
stale premise -- resolvewalk has per-block scopes since #53 and IS
the live w6c_ww checker pass. Bindings now install in a per-LOOP
scope (the N_MCASE pattern), so a duplicate name within one pattern
errs "redeclared in same scope" (cstage parity via stamptuplebinds'
scopedefine-nil check) while sequential same-name loops stay legal.
kwtab restores its stated alphabetical order (`import` before `is`,
both stages, kinds swapped in lockstep with names).
Two composing defects made a two-enum union mis-tag in wwstage
(live cs!=ww: `let e: (color|shape) = shape.BALL` stored tag 0 —
the color arm — while cstage stored 1). type_eq/typeeq had no
TY_ENUM arm, so ANY two enums fell into the primitive default and
compared equal; enums are nominal (harec: an enum IS its alias
type) and now compare by node identity only. Underneath, the
wwstage post-order revisit re-stamped the constant-folded enum
member (an N_INTLIT) as untyped_int, clobbering the enum stamp the
N_DOT fold applied, so the widen matcher fell to its first-variant
fallback -- the #59.9 N_BIN guard now twins on N_INTLIT (cstage
cexpr is single-pass and never clobbered).
lib/strconv/test/ was the last _test layout deviating from Go's
in-package shape (src/bytes/bytes_test.go declares bytes_test in the
package dir). Its rationale — `import strconv` file-hitting the
sibling strconv.ww — dissolved when #98 made directory packages win
over same-named files on any search entry. libbyteid re-paths the
three fx entries and drops the covered() carve-out: the completeness
scan now keys lib/strconv through the fixtures' dirname. Walk line
flips to "ok lib/strconv [strconv_test, external]".
Unblocked by the package-mode ruling: same-package test files now
compose everywhere (coordinator dir-mode owns test-library and the
libbyteid dir entry owns byte identity), so the per-file standalone
constraint is gone and Go's stdlib layout applies directly. The
15-banner strings_test.ww monolith dissolves into per-ref-file
family files — dup, concat, trim, sub, utf8, iter, tokenize
(tokenize+splitn+cut, all of ref tokenize.ha), pad, replace — plus
helpers_test.ww holding exactly the one cross-family helper (streq),
Go's shared test-helper idiom. Pure moves; family-local helpers
(expect_str_token et al.) stay in their family file. Leading banners
that merely restated the filename dropped; 6 interior sub-family
boundaries remain. lib/ census 141 -> 132.
libbyteid gains the dx() dir-mode entry form decided in B2: compose
every *_test.ww under moddir exactly as pkgcombined does
(module-reset separators, byte-lex order) and byte-id the composed
root through both driver stages. The five per-file strings fx
entries retire into one dx("lib/strings") — every source line they
covered is inside the composed unit, and the completeness scan still
keys the module. NENTEXPECT 60 -> 56.
Recorded, not split: fmt_test's 13 banners are scenario groups over
the one fprint surface and ref/hare/fmt itself keeps a single
+test.ha — a print/wrappers split would fight the ref; memio stays
per the standing ruling (everything ww ports lives in ref
stream.ha).
The bbdd8bed residue, ruled by the Go derivation (ww's for IS the Go
for; the cstage grammar is the language definition and already the
Go-shaped one):
- bare `for { }` accepted (align UP to parse.c:1023, incl. for-else);
- 3-clause cond and post each omissible — `for (init;; post)`,
`for (init; cond)`, `for (init;)` (align UP, parse.c:1092-1097);
- 2-clause `for (cond; post)` REJECTED (align DOWN): the form exists
in neither Go nor cstage (parse.c:1101 eats a stray ';' then
requires ')'), so the old wwstage accept was a parser bug. The
reject wording mirrors cstage's failure mode per stage.
forhdr_{brace,emptymid,partial} run fixtures pin the accepted forms
byte-identically; forhdr_twoclause_reject pins both reject fragments.
Corpus pin 1745/346/21/209/1169/3490.
Pure move: log_test.ww dissolves along its banner seams into
funcs_test.ww (the six logger-arg rows — lprintlnbasic/single/empty,
lprintflnbasic/indexed/mods — plus the fatal-family subprocess TODO;
ref/hare/log/funcs.ha owns lprintln/lprintfln and the fatal/lfatal
forms) and global_test.ww (defaultwiredtoglobal, setloggerswap,
printflnglobal; ref/hare/log/global.ha owns default/global/setlogger).
Moved blocks are byte-identical; the 9 banner lines are deleted.
Imports minimized per file (log + memio; the stale fmt/io imports
drop).
Helper inventory: streq spans both halves (all six funcs rows;
setloggerswap + printflnglobal on the global side), so it is
duplicated under per-file names per the sanctioned strconv
streq/fstreq precedent — fstreq in funcs_test.ww (decl + 6 call
sites), gstreq in global_test.ww (decl + 6 call sites); bodies
byte-identical apart from the name. Line-multiset diff old-vs-concat
(heads/banners excluded, names normalized): the only residue is the
9-line streq helper counted twice.
Order-safety, proven on the composed run: dir-mode executes
declaration order per file, files byte-lexicographic (funcs_test <
global_test < silent_test). Observed order: lprintlnbasic,
lprintlnsingle, lprintlnempty, lprintflnbasic, lprintflnindexed,
lprintflnmods, defaultwiredtoglobal, setloggerswap, printflnglobal,
silentwritesnothing, silentignoresprintfln — defaultwiredtoglobal
still precedes every log.setlogger caller (setloggerswap and
printflnglobal, both later in its own file; funcs and silent rows
never call setlogger).
Consumers: Makefile LIBRARY_TESTS replaces the log_test.ww entry with
the two new entries in place; test/byteid/libbyteid_test.ww roster row
becomes two fx rows, NENTEXPECT 59->60.
Validation: standalone ww test lib/log/funcs_test.ww (6 passed) and
lib/log/global_test.ww (3 passed); dir mode ww test lib/log (11
passed, no duplicate symbols); byteid compile-only build exit 0, 60
roster appends == NENTEXPECT.
Pure move: bufio_test.ww dissolves along its banner seams into
stream_test.ww (13 stream* rows) and scanner_test.ww (13 scan*/
newscanner*/emptystream/errorsource/boundarycases/multifill/
readaheadcantgrow rows), mirroring ref/hare/bufio/{stream_test+test.ha,
scanner_test+test.ha} ownership. streamscannerunread stays stream-side:
Hare's stream-level unread test lives in stream_test+test.ha:86.
Moved blocks are byte-identical; the 28 file-scope banner lines (and
their // continuation lines) are deleted, the 2 interior banners inside
boundarycases stay. Imports minimized per file (the unused `import
bytes;` drops; utf8 is scanner-only).
Helper inventory: putstr spans both halves (7 scanner rows / 8 call
sites; 8 stream rows / 8 call sites), so it is duplicated under
per-file names per the sanctioned strconv streq/fstreq precedent —
scanner_test.ww keeps `putstr`, the stream copy is `sputstr` (decl,
head comment, 8 call sites; body otherwise byte-identical). The
error-returning source (errvt/errread/errwrite/errsource) moves with
its sole consumer errorsource into scanner_test.ww; the close-recording
source (srcclosed/closevt/closesink/closewrite/closeclose/closesource)
moves with streamclosenopropagate into stream_test.ww. Line-multiset
diff old-vs-concat (heads/banners excluded, sputstr normalized): the
only residue is the 10-line putstr helper counted twice.
Consumers: Makefile LIBRARY_TESTS replaces the bufio_test.ww entry with
the two new entries in place; test/byteid/libbyteid_test.ww roster row
becomes two fx rows, NENTEXPECT 58->59.
Validation: standalone ww test lib/bufio/scanner_test.ww (13 passed)
and lib/bufio/stream_test.ww (13 passed); dir mode ww test lib/bufio
(26 passed, no duplicate symbols); byteid compile-only build exit 0,
59 roster appends == NENTEXPECT.
Pure move: utf8_test.ww dissolves along its banner seams into sibling
rune_test.ww (runesz/utf8sz), encode_test.ww (encoderune),
decode_test.ww (decoder next/prev/validate/remaining/slice/position
plus the encode->decode round-trip), and types_test.ww (strerror),
mirroring ref/hare/encoding/utf8/{rune,encode,decode,types}.ha
ownership (types.ha:12 owns strerror). Blocks are byte-identical;
only the banner lines are deleted. The streq helper moves with its
sole consumer, strerror_cases, into types_test.ww. The impl utf8.ww
is untouched (no banners).
Consumers: Makefile LIBRARY_TESTS replaces the utf8_test.ww entry
with the four new entries at the same position; the
test/byteid/libbyteid_test.ww roster row becomes four fx rows,
NENTEXPECT 52->55 (+3).
Pure move: bytes_test.ww dissolves along its banner seams into sibling
equal_test.ww, index_test.ww (u8 + []u8 arms of index/rindex),
contains_test.ww (contains/hasprefix/hassuffix), tokenize_test.ww
(tokenize/rtokenize/peektoken/remainingtokens + splitn/rsplitn/split +
cut/rcut), and trim_test.ww, mirroring ref/hare/bytes/{equal,index,
contains,tokenize,trim}.ha ownership (Hare keeps splitn and cut in
tokenize.ha; contains.ha owns hasprefix/hassuffix). Blocks are
byte-identical; only the banner lines are deleted. Helpers stay with
their sole consumers: expect_token/expect_done/expect_tok in
tokenize_test.ww, beq in trim_test.ww.
Consumers: Makefile LIBRARY_TESTS replaces the bytes_test.ww entry
with the five new entries at the same position; the
test/byteid/libbyteid_test.ww roster row becomes five fx rows,
NENTEXPECT 48->52 (+4).
Pure move: the hasprefix/hassuffix, contains, byteindex/rbyteindex/
index/rindex, and compare sections of strings_test.ww become sibling
suffix_test.ww, contains_test.ww, index_test.ww, compare_test.ww,
mirroring ref/hare/strings/{suffix,contains,index,compare}.ha
ownership. Blocks are byte-identical; only the section banner lines
are deleted (the file names now carry them).
The remaining families (dup, concat, trim, sub, utf8, iter, tokenize,
pad, replace, cut) stay in strings_test.ww: they all consume the
file-local streq helper, and a helper cannot be shared across split
test files — a single-file test root does not pull same-package
siblings (undefined: helper), while dir-mode composes all package
test files into one unit (duplicate fn helper). Splitting them would
force either helper duplication or renames, both out of scope for a
pure move.
Consumers: Makefile LIBRARY_TESTS gains the four new entries beside
the strings_test.ww row; test/byteid/libbyteid_test.ww roster gains
four fx rows, NENTEXPECT 44->48 (+4).
hton/ntoh -> network.ww (ref/hare/endian/network.ha:5-36); be* byte
get/put -> big.ww (ref/hare/endian/big.ha:5-48); le* -> little.ww
(ref/hare/endian/little.ha:5-48). ww does not port endian.ha's host
dispatch, so no host file appears.
Pure move: every fn is byte-identical; the three section banner
lines are deleted (file names now carry them). The module-doc header
rides with network.ww — its amd64-is-LE sentence is the WHY for
hton being a swap.
Consumers: Makefile WWFIXTURE_SRC entry replaced in place. The
byteid roster is untouched: lib/endian is enrolled as an
import-probe keyed on `package endian;`, which every new file
still declares.
Mirror ref/hare/path's impl layout in the test siblings:
abs/isroot/string/local rows -> buffer_test.ww (ref/hare/path/
buffer.ha:28-77); push/parent/pop-split rows -> stack_test.ww
(ref/hare/path/stack.ha:9-180); dirname/basename rows ->
posix_test.ww (ref/hare/path/posix.ha:17-71).
Pure move: every @test block is byte-identical; only the section
banner lines are deleted (file names now carry them) and each
section's ref-cite WHY comment rides with its @test. The suite
header's Hare-vector/parallel-array WHY paragraphs ride with
stack_test.ww (push is their subject); the stale `ww run
lib/path/path_test.ww` sentence is dropped, not relocated.
Consumers: Makefile LIBRARY_TESTS entry replaced in place. The
byteid roster is untouched: lib/path is enrolled there as an
import-probe, not a fixture.
Mirror ref/hare/time's impl layout in the test siblings: constants ->
duration_test.ww (ref/hare/time/duration.ha:9-18 owns the constants);
now/sleep rows -> instant_test.ww (instant is the subject type,
ref/hare/time/instant.ha; now/sleep bodies live in
ref/hare/time/+linux/functions.ha, a platform split ww does not have);
add/diff/compare rows -> arithm_test.ww (ref/hare/time/arithm.ha).
Pure move: every @test block is byte-identical; only the section
banner lines are deleted (the file names now carry them). The stale
file header naming the retired `ww run lib/time/timetest.ww` entry
point is dropped, not relocated (rule 8: it described a WHAT that no
longer exists).
Consumers: Makefile LIBRARY_TESTS entry replaced in place;
test/byteid roster 44->46 (+2).
Pure file-boundary move: the two silent-logger rows
(silentwritesnothing, silentignoresprintfln) leave lib/log/log_test.ww
for lib/log/silent_test.ww, mirroring ref/hare/log/silent.ha's
ownership (ref/hare/log has no test files of its own; the file name
follows the impl layout as directed). Only the two banner lines are
deleted; both moved blocks are byte-identical. silent_test.ww imports
log + memio only (neither row uses streq/fmt/io).
The specced funcs_test/global_test halves stay merged in log_test.ww:
the streq helper is consumed by six lprint* rows AND the
setloggerswap/printflnglobal global rows, and same-package test files
compile as one unit in dir mode (duplicate fn rejected), so that
boundary cannot be a pure move; reported upstream rather than
relocating the majority of rows.
Ordering: defaultwiredtoglobal must precede any log.setlogger caller.
All setlogger callers (setloggerswap, printflnglobal) remain after it
in log_test.ww; the silent rows never touch setlogger, and dir-mode
concat order (pkgsort: log_test.ww < silent_test.ww) keeps
defaultwiredtoglobal first overall.
Consumers: Makefile LIBRARY_TESTS gains lib/log/silent_test.ww beside
the log_test.ww entry; test/byteid/libbyteid_test.ww roster gains
fx("lib/log/silent_test.ww") after the log_test row, roster 44->45
(+1, NENTEXPECT bumped).
Validation: standalone ww test lib/log/log_test.ww (9 passed) and
lib/log/silent_test.ww (2 passed); dir mode ww test lib/log (11
passed, defaultwiredtoglobal first); test/byteid/libbyteid_test.ww
compile-only build exit 0, 45 roster appends == NENTEXPECT.
Pure file-boundary move of lib/io/stream.ww's single 'empty stream'
banner section (_empty_read, _empty_write, _empty_vt, empty) into
lib/io/empty.ww, mirroring ref/hare/io/empty.ha. No code, name,
signature, or behavior change. Comment-only adjustments: the banner
line is deleted (the file name carries it); the moved block's
'Lives in stream.ww' self-reference now says empty.ww; stream.ww's
head drops its empty bullet (content duplicated by empty.ww's own
comments); io.ww's ownership map gains the empty.ww line; types.ww's
'three files' count becomes four. empty.ww needs no imports (package
io types only).
Makefile: lib/io/empty.ww added beside every lib/io/stream.ww
occurrence (WWFIXTURE_SRC line 75; w6c_ww/wwdump_ww bootstrap prereq
lists at lines 184/204). lib/io has no _test.ww, so no LIBRARY_TESTS
or byteid-roster change; byteid coverage rides the bootstrap gates.
Validation: out/bin/w6c lib/io/io.ww (standalone contract) exit 0;
importer tests green: bufio 26, memio 11, log 11, getopt 12 (calls
io.empty), fmt 49.
Pure file-boundary move of lib/bufio/bufio.ww along its three banner
seams: buffered stream + vtable callbacks -> stream.ww (per
ref/hare/bufio/stream.ha), scanner + BUFSZ + overflow -> scanner.ww
(per ref/hare/bufio/scanner.ha). Head defs split by ownership:
flushdefault + rtabort (unread's assert) stay with stream, BUFSZ
(scanner.ha:11) + overflow with scanner. The module head comment
stays with stream.ww. No code, name, signature, or behavior change;
the three banner lines are deleted (file names carry them) and three
comment self-citations re-point (bufio.ww:87-89 -> stream.ww:73-75,
bufio.ww:46-50 -> stream.ww:46-50, bufio.ww:77 -> scanner.ww:15), plus
the lib/regex/regex.ww:1117 citation of lib/bufio/bufio.ww now names
scanner.ww. import bufio resolves by directory (cmd/ww locate_import
dir pass), so no consumer path lists change; bufio_test.ww is
untouched (its split is blocked by the shared putstr helper vs the
composed-mode duplicate-symbol reject; reported upstream).
Validation: out/bin/ww test -I lib/ww lib/bufio/bufio_test.ww (26
passed) and out/bin/ww test lib/bufio (ok, external) both green;
lib/regex/regex_test.ww (bufio importer) 33 passed.
`case T1 | T2 =>` (binding-less; cstage parse.c:635-650 chains extra
types through cs->list, bindings stay single-type by design). Three
wwstage layers, no AST change (node.list already exists):
- parser (expr.ww): pipe loop after the non-let arm's first
parsetype;
- checker (check.ww): resolvewalk N_MCASE now walks n.list so each
alt gets its type_ stamp (exhaustiveness/casecovers were already
alt-aware, built ahead of the parser);
- cgen (cgenexpr.ww): the single-pattern want-computation moves
VERBATIM into matcharmwant; a cs.list arm emits CMPQ/JE per alt
funneling into one match_body label, mirroring cgen.c:11118-11141
incl. label mint order and the tag<0 clamp. Nullable arms keep
ignoring alts (both stages).
Graduates the held e2e row (pin 1732/1158/3464); byte-identical on
the repro and the single-pattern control.
cstage parse.c:1027 accepts `for ()` — N_FOR with a nil cond, no
for-else arm, no test emitted (an unconditional loop; a deliberate
Go-flavored ww divergence from Hare, original to the toolchain
import). The wwstage parser had no RPAREN early-out and rejected it.
Selfhost checker and cgen already nil-guard n.cond, so the parser arm
is the whole gap. Graduates the held e2e row (pin 1731/1157/3462).
Adjacent asymmetries left filed, not fixed here (rule 11): the brace
form `for { }`, the empty middle clause of the 3-clause form, and
the REVERSE case (wwstage accepts 2-clause `for (cond; post)` which
cstage rejects).
The three must-abort runs (u32n/u64n zero, decodedsize unaligned) move
into the owning lib suites as test.expectabort rows; the five
normal-return controls already live in the r989_libprecond_* fixtures.
wwstage parity rides the lib-wide cs==ww byte identity gate.
