`let s: str = *h` (a str/slice loaded by value through *str / *[]T)
fell through the N_UN deref arm to the scalar load, emitting a single
MOVQ that read only the 8B .ptr and left .len/.cap from stale registers,
so len(*p) returned garbage. Both stages emitted byte-identical wrong
code, so the self-compile byte-id gate was blind to it. Add a str/slice
arm that loads the full {ptr,len,cap} via cgslicehdr when the chased
pointee is TY_STR/TY_SLICE.
Surfaced by the codegen miscompile hunt (finding C1b). Pinned by
test/lang/deref_hdr_test.ww, which interposes a different-sized decoy
header so the test reddens when the arm is reverted.
wwstage rejected a module-level `const/let []T = [arrlit]` global with "let: not assignable"; cstage accepts (textbook Hare, ref/hare/path/stack.ha:30). The arrlit->slice admission in checkletassign was gated local-only; lift it to module scope too, aligning wwstage UP to cstage's arrlit_init_fits (check.c:3406-3409, slice arm 519-520). cstage unchanged.
Two guards the un-gating requires: the n.rhs.lhs=arr stash stays local-only (a module decl keeps its raw N_ARRLIT for DATA emit, so stashing would leave an untyped count node for the pass-3 asserttyped walker); and tuple-element slice globals are excluded at module scope, because the synthesis delegates element checks to isassignable which lacks a strict tuple arm (#38) -- a [](str,*fn) table would over-accept a sig-mismatched &fn that cstage's strict type_assignable rejects (#124) -- so they stay on the existing typeeqast path.
Closes two divergences 944_alias_emit_b7 pinned: Group A (cstage-runs/ww-rejects) migrates to test/lang/slice_global_arg_test.ww (promoted from _runonly, now cs==ww byte-id); Group B converges to a shared emit_slice_data reject with the identical diagnostic.
fold-2 chunk C5 (drew's Fam8-13 plan), the highest-risk chunk: 21 match/tagged
value-row C drivers re-homed. 20 -> test/lang/*_test.ww @test row-tables + 12
runww //ww:error carriers (both stages reject). The global-tag cluster
(globtag*/globstructwiden/taggedderefstore/...), which sits on the #15/#17
global-ptr fix, was empirically probed byte-id CLEAN -- the predicted hotspot
surfaced ZERO fresh cs!=ww. Carves: variant_chain_b95 #81 -> _runonly (genuinely
diverges at HEAD); callret_bound277 #277 -> slim C pin (cs-runs/ww-rejects),
mutation-gated. 929_tagged_memarg kept whole (SSE-ABI asm conformance). 19
drivers deleted, 944_variant_chain slimmed to the #277 pin.
The match-on-tagged-struct-field divergence (former #26) probed RESOLVED for all
its cited shapes (938 voidstr_field/recursion_torture, tagnorm dedup_match all
byte-id cs==ww + value-correct) -- closed no-reproducer-at-HEAD, attribution to
#15/#17 INFERRED. Those rows migrate as normal byte-id @test and serve as the
REGRESSION SENTINEL for the inferred close (a resurgence trips the gate).
LANGBYTEID floor 93->113; test count 374->355 (19 deleted; 929 + 944_variant_chain
kept). do-not-auto-batch (926_tagscr/940_global_sret/940_str_forrange) untouched.
fold-2 chunk C2 (drew's Fam8-13 plan): 14 tuple value-row C drivers migrate to
15 test/lang/*_test.ww @test row-tables (the +1 is 954_tuprecv, slimmed not
deleted -- its value rows split out while the asserttyped-stamp dimension stays
as a carrier-split C pin, mutation-proven non-vacuous). Reject rows move to 32
test/wcc/data/*/case.ww //ww:error carriers (runww asserts the substring in
BOTH stages). The test-lang byte-id (LANGBYTEID) gate gives cs==ww automatically
and is strictly more sensitive than re-running the wwstage leg; floor 59->74.
Tuple surfaced zero cs!=ww as the plan predicted -- no value-only carve. The 945
trio folds in here; 940_global_sret / 940_str_forrange / 926_tagscr untouched
(routed to drew per-file). Test count 402->388 = the 14 retired drivers.
fold-2 chunk C1 (drew's Fam8-13 plan): 960_opaque_decl_run.c and
962_opaque_assign_cast_run.c were value-row C drivers. Migrate their 3+3
cases to test/lang/opaque_decl_test.ww and opaque_assign_cast_test.ww as
@test row-tables. The test-lang byte-id (LANGBYTEID) gate gives cs==ww
automatically -- 960 was cstage-only-run before, so this strengthens it.
Both byte-id clean, no cs!=ww carve. Retire the 2 C drivers (LANGBYTEID floor
57->59) and repoint a dead comment ref in lib/sort/sort.ww. 961_opaque_guards
(reject/guards) stays in C -- fold-3 territory, not in the Fam12 fold-2
worklist.
fold-6 carrier-split (drew's ruling): the 6 uniesc value rows (rune/string
escape decode) are already covered 1:1 by test/lang/uniesc_test.ww @test rows
-- same escape forms, same expected codepoints/bytes, same lexer escape-decode
path, and dual-stage via test-lang-byteid (frontend-swap .s byte-id proves
wwstage decode transitively, strictly more sensitive than re-running). So drop
the duplicate value rows from the C driver; 110_uniesc_run.c slims to just the
.wwi roundtrip -- a 2-package sep-build observer that can't be an in-language
@test and isn't a reject case (its eventual runww home tracked as #19). The
carrier still runs both stages for the roundtrip; no coverage lost, test count
unchanged (404).
#18 verified there is no spurious load-narrow on a chained global-ptr field
read into an i64 sink -- the only MOVSXD is the legitimate :i32 return cast,
byte-identical in both stages. Lock it: a chain_i64_sink row reads q:i64 =
0x1_0000_0001 and asserts the high word == 1. A truncating load-narrow would
drop the high word to 0, so the row pins the spine-narrow family (runtime +
byte-id, both stages).
A >32B tagged-union field (slice payload) read through a direct *struct
pointer byte-diverged: wwstage's cgloadtaggedfield always loaded R8@+24
before CX@+16, but cstage's direct-*struct-ptr arm (cgen.c ~11926) loads in
offset order CX@+16 then R8@+24. Both ran correct -- a pre-existing rule-10
asm divergence, for a local *struct ptr as well as a global one.
Thread a cxlast flag through cgloadtaggedfield: the direct-ptr site
(cgptrfieldload, the shared local+global chokepoint) passes cxlast=false to
match cstage's offset order; the other 5 callers keep cxlast=true (byte
unchanged). A global flip was rejected -- it would clobber the CX-base
callers (CX@+16 first destroys the base before the R8@+24 read), and the
chained-BX caller must stay R8-first to mirror cstage's chained twin
(cgen.c ~12021); the order is a genuine per-arm property of cstage, not
derivable from the base register.
Test: +2 rows (tagged_slice_field via global *struct ptr, _local via local
*struct ptr), runtime + byte-id; both proven to fail byte-id with only the
compiler files reverted.
wwstage's chained-N_DOT resolver (dotchainresolve) didn't resolve a global
*struct root (only local *T and global value-struct), so gp.sf.len / gp.x.y
bailed to an inner-dot load + shuffle, byte-diverging from cstage's offset-fold.
Both stages already ran correct after #15 (475c003) -- a pure rule-10 asm
divergence. cstage is untouched (the oracle); wwstage aligns up.
Resolve a global N_TPTR root, and extract emitchainbase for the viacx base-load
(byte-identical across the 5 read + 2 store sites it replaces). The chained
STORE caller declines the global-ptr root (yok=false) so it falls to cstage's
address-spine mirror -- matching the #6/#15 decline-to-resolver discipline;
local *T chained stores still fold.
Test: +2 chained rows (gp.sf.len, gp.x.q), runtime + byte-id; proven to fail
byte-id with only the compiler files reverted, pass with the fix.
Sibling follow-ups filed: #17 (>32B tagged word-order), #18 (chained read into
an i64 sink MOVSXD check).
Reading gp.f through a module-global pointer miscompiled in BOTH stages,
differently: cstage classified gp as a local at boff 0 and derefed BP
(MOVQ (BP),BX), wwstage collapsed gp.f to an undefined global symbol f
(MOVQ f(SB)). Both now load the pointer value from the global's data slot
before the field offset, converging on MOVQ gp(SB),BX; MOVQ off(BX),AX.
cstage mirrors the #6 store decline; wwstage gains a global-ptr arm and
shares a cgptrfieldload helper with the local arm.
Fused, not split: the two stages must emit byte-identical asm, so a
one-stage commit would fail the byte-id gate. Sibling byte-divergences
filed: #16 (chained-spine gp.x.y), #17 (>32B tagged word-order).
Test: table-driven 689_globptr_field_read_run (24 rows, runtime + byte-id).
A module-global pointer's field store/compound (`let gp:*S=nil; gp.f += 5`,
`gp.in = Inner{...}`) SEGV'd in cstage: the enumerated N_DOT-lhs arms load
the base pointer with `MOVQ boff(BP),BX`, valid only for a LOCAL ptr slot,
but a module-global ptr has no local slot (localfind=0) so it dereferenced
the saved BP. wwstage was correct -- it routes these through its F6
cgplaceaddr resolver (its dedicated arm is scalar-`=`-only by design,
#60/#61). The byte-id gate was blind (no global-ptr compound in the
bootstrap corpus) and the deferral note was stale: this is a live cs!=ww
divergence with wwstage as the oracle.
cstage already has an equivalent assign-resolver (cgen.c ~7488) that emits
byte-identically to wwstage's F6 route, but the enumerated arms intercepted
the global case first. Fix (align cstage UP, cstage-only): two precondition
entry-guards decline a module-global `*struct` base for the compound +
non-scalar-field cases so they fall through to the resolver. Plain-scalar
`=` stays in the enumerated arm (its #47 fix already matches wwstage). The
decline and resolver accept-sets exactly partition the global-base
N_DOT-lhs space (no gap, no overlap); tagged/float field stores now both
loud-stop symmetrically (were SEGV'ing). The discriminant keys on
localfind-presence + let_islet, so a param at offset 0 stays local.
New both-stage + byte-id test 689_globptr_field_store_run covers offset-0/8,
compound, struct/str field, chained gp.x.y, indexed gp.a[i].f, with local +
offset-0-param controls. The field-READ path is independently broken in
both stages (filed #15). make clean && make test: all 403 passed, byte-id
990-996 green.
The selfhost checker's resolvewalk had no loop-nesting guard and no
N_BREAK/N_CONTINUE arm, so `break`/`continue` outside any loop fell through
the generic child recursion and was silently accepted -- while cstage
(cmd/wcc/check.c) correctly rejects them. A cs!=ww checker divergence
(rule 10); cstage is correct (break/continue outside a loop is an error in
Hare/C/Go), so align wwstage DOWN, not cstage up.
Mirror cstage's mechanism exactly (check.c:598/2494/2529/2611): a `loops`
counter incremented around for and for-range bodies -- the for-`else` and
the init/cond/post walked OUTSIDE the count, since a break there targets an
enclosing loop -- rejecting break/continue when loops==0 with a
byte-identical `file:line:col: error: <kw> outside loop` diagnostic.
match/switch are not loop targets, matching cstage.
The divergence survived because 300_check.c only exercised the in-process C
checker, never w6c_ww; the fix adds 4 rows to the both-stage
989_catA_f2_reject carrier (break/continue outside loop, the for-else
els-outside-count edge, and an in-loop control). make clean && make test:
all 402 passed, byte-id self-compile gates 990-996 green.
749's cstage-vs-wwstage callsite byte-id compare read back <src>.s, but
separate-compile emits the root .s to <ostem>.sepwork/__root.s, so the read
returned NULL and the `if(cs_asm && ws_asm)` guard left the compare silently
skipped -- green but unverified, the same blind-spot class as the #9/#10/#11
producer bugs.
Switch to the canonical explicit-emit idiom (siblings 925/926/949): emit
each stage's .s directly with `w6c -o <tmpdir>/cs.s` / `w6c_ww -o
<tmpdir>/ws.s`, then read both and run the existing helper_callsite() window
compare. The .s files live inside the driver's rm -rf'd tmpdir (w6c emits no
.sepwork); runtime parity blocks unchanged.
The compare now genuinely fires (749's internal subtest count 6->9) and
passes -- cs and ww callsite windows are byte-identical, no rule-10
divergence was hiding behind the skip. make test: all 402 passed.
The 9 Makefile recipes that build selfhost/cmd/<tool>/main.ww (5 primary
$(BIN)/*_ww + 4 nocc bootstrap) passed no -o, so the compiler's scratch
followed the SOURCE stem and left selfhost/cmd/<tool>/main.sepwork in the
tracked tree (the binary was mv'd out; the .sepwork dir stayed behind).
Each recipe already cd's into a gitignored out-of-tree dir before building,
so a uniform `-o main` makes the scratch follow the OUTPUT stem (cwd) out
of the source tree; the binary still lands at cwd `main` and the existing
`mv` lines are unchanged. Same intermediates-follow-output principle as the
T3 -o redirect (rule 14).
Carved from #8 by unanimous advisor ruling as its own bisect-clean commit.
make clean && make test: all 402 passed, zero in-repo .sepwork, zero /tmp
scratch.
The wcc test drivers ran `ww build <bare-/tmp src>` with no -o, so the
compiler's <stem>.sepwork scratch landed beside the source and was never
cleaned: unbounded /tmp growth (2195 stale dirs observed) that fills tmpfs
and fabricates phantom test failures + silent harness aborts, and for
in-repo fixture builds leaked .sepwork into the tracked tree.
Each leaking build now writes its source + output inside a per-invocation
tmpdir, passes -o <tmpdir>/<stem> so the .sepwork lands inside it, and
rm -rf's the tmpdir on every exit path -- including fopen-fail and the
expected-fail reject builds (scratch is mkdir'd before the build can fail).
`ww run` and explicit-`-o`/byte-id helpers are left as-is; the 990/993
byte-id comparison logic is byte-for-byte unchanged.
Two items filed separately (this commit holds the no-Makefile / no-main.c
rail):
- #13: a stale <src>.s byte-id readback (749) silently no-ops since
separate-compile emits .s to <ostem>.sepwork/__root.s; documented inline.
- #14: build-system Makefile recipes build selfhost/cmd/*/main.ww with no
-o and leak main.sepwork in-tree (bounded, gitignored; own commit).
One concern -- sepwork leak hygiene -- across 228 drivers; uniform
transform applied per-file and two-round reviewed. make test: all 402
passed, zero net-new /tmp scratch, zero test-driven in-repo .sepwork.
wwi_emit took the .wwi `package` leaf from the first primary decl's module tag;
a fully empty primary module body (zero decls) had none, so the leaf stayed the
literal default "main" and the importer rejected it ("package main does not
match import path <leaf>"). The module identity is only available at parse time
(curmod is overwritten by imported //ww:module sections before emit), so stamp
the primary path onto the N_FILE node (TK_MODULE and TK_MODRESET rp!=NULL sites,
only-if-empty so a bare-reset `package main` root stays "main") and, when the
decl-scan finds no leaf, fall back to that stamped path. Symmetric cstage+
selfhost; both detect scan-miss via the same found-flag so the emitted .wwi
stays byte-identical.
Regression: test/wcc/989_wwileaf_run.c, table-driven over {empty body,
comment-only, nested a.b.c} decl-less shapes, non-vacuity proven.
A torn producer write (e.g. disk-full mid-copy) could leave a 0-byte P.wwi or
P.o in out/.pkgcache under a self-consistent key; cache_lookup checked only
existence, so every later build HIT and served the empty artifact forever
(silent serve-wrong). Reject size==0 on both sides, symmetric across stages:
store refuses to commit a 0-byte temp before the key write, lookup treats a
0-byte cached artifact as a MISS so existing poison self-heals on re-derive.
A valid .wwi/.o is never 0 bytes, so the guard cannot misfire.
Regression: test/wcc/989_pkgcache_poison_run.c, table-driven over
{poison P.wwi | P.o | both}, non-vacuity proven by guard-neuter.
BUG-A #9: when an empty/export-less inlined module body produces `//ww:module <p>` immediately followed by `//ww:module-reset` in one skipws run, lexnext drained TK_MODRESET first then emitted the STALE TK_MODPATH past the reset boundary, re-binding pathmod=<p> so the root `package main` was validated against <p> -> wrong reject. Fix clears the pending modpath at the reset-RECOGNITION site in skipws (NOT lexnext drain): cstage l->modpath=NULL after both l->modreset=1 (cmd/wcc/lex.c); selfhost l.modpathset=0 after all three l.modreset=1 (lib/ww/syntax/lex.ww). Symmetric (rule-10): identical token streams, bootstrap byte-id holds. The normal RESET-then-PATH boundary is unaffected (clear is a no-op when no path is pending). Pin: test/wcc/989_modresetadj_run.c feeds the raw composed adjacency to w6c+w6c_ww (accept + byte-id), red-path-proven (reverting a clear reddens it). A separate wwi-producer defect surfaced (decl-less .wwi defaults to 'package main') filed as #11; not touched here.
#152 link-the-let-before-its-init miscompile (miscompiled IDENTICALLY on both stages, so byte-id 990-997 was blind; only a runtime value check catches it). Lifted the run fixture into test/lang/letshadow_test.ww (primitive @test value pin; byteid-eligible — symmetric, cs==ww). byteid floor 56->57. Closes the fold-3 #7 umbrella (last C test twin retired).
#154 cstage-only str== global-header miscompile (str== fast-path read the global str header off BP+0 instead of name(SB); byte-id 990-997 blind to a runtime-value miscompile). Lifted the run fixture into test/lang/strglobeq_test.ww (primitive @test value pin; byteid-eligible — post-fix cs==ww). byteid floor 55->56.
949_dotfield_compound + 949_idxfield_compound are one bug class (#133-lineage compound-assign load-op-store on field lvalues; #34/#33, #263 carve-out) sharing the combine + hard-error path, so the two C carriers fuse into one commit: 26 value rows -> test/lang @test row-tables (primitive-only asserts), 8 reject rows -> runww //ww:error dual-stage carriers. byteid floor 50->52.
#133 indexed-scalar compound-assign. The 21 rows split by observability:
18 value rows -> test/lang/idx_compound_test.ww (one @test fn each,
primitive-only asserts, slot-poison + neighbor-unchanged read-back);
3 reject rows -> test/wcc/data/idx_compound_{float_indexed,str_indexed,
chained_ptr_float}/case.ww as //ww:error, asserting BOTH stages reject on
the shared diagnostic body (cstage's leading prefix excluded). The C twin
is retired; its coverage is a strict superset of the original rows.
First reject-bearing fold-3 migration -- validates the runww dual-stage
home end to end. LANGBYTEID_EXPECTED_MIN 49 -> 50.
test-run drives runww.ww over the test/wcc/data/*/case.ww behavior and
//ww:error cases, but was not a prerequisite of any aggregate, so the
reject surface was ungated. With runww's arm now dual-stage, gate it.
Added to the pre-push `test` target only -- not test-unit, not the
test-commit content-key tier. runww execve's its children with nil envp,
so a WW_PKGCACHE override cannot reach them; they fall back to the default
out/.pkgcache that $(TESTS) and the byte-id gates also use. A normal
prereq would let make -j overlap test-run with those writers, so test-run
carries an order-only prereq (| $(TESTS) test-lang test-lang-byteid) and
is scheduled strictly after every default-cache writer. No cache
isolation is added: it would be inert under nil envp, and the ordering
prevents the race.
True per-run cache isolation stays blocked on an os envp() forwarder.
A rejected program emits no .s, so the test-lang-byteid (T2) gate cannot
cover wwstage-reject -- yet the retired C twins asserted that BOTH stages
reject with the same diagnostic. runww's //ww:error arm was cstage-only,
so migrating reject rows onto it would silently drop the wwstage-reject
coverage the C twins carried.
Run w6c_ww (wwstage) alongside w6c (cstage) on each //ww:error case and
require both to fail with the shared diagnostic body present. The body is
identical across stages; only cstage's leading prefix differs, so the
substring matches the body alone (no file:line). An ERROR row now reports
PASS dual / FAIL cstage / FAIL wwstage. w6c_ww resolves off the same $BIN
as the C twins -- no new harness threading.
Two pilot reject cases (runww_dup_main_reject, runww_dup_type_reject)
exercise the dual-stage path; the wwstage leg is proven non-vacuous (a
cstage-rejects/wwstage-accepts case reports FAIL wwstage).
Prerequisite for migrating fold-3 reject rows onto runww.
cgassign had dedicated N_DOT-store arms for a local-ptr base, a global
value-struct, and chained bases, but none for a global-pointer scalar
field. That case fell through to the generic cgplaceaddr/dotchainaddr
route, which folds the field offset (ADDQ $foff,BX) then stores to (BX).
cstage emits a single displacement store (MOVQ AX,foff(BX)) via its
via_ptr global scalar arm, so the two stages diverged on asm shape
(rule 10). Both forms are runtime-correct here -- BX is a fresh throwaway
in the generic route -- so this was a byte-id divergence, not a
miscompile.
Add the missing displacement-store arm, predicate-mirroring cstage's
via_ptr global scalar arm exactly: plain assignment only, scalar field
only; non-scalar field types stay on the generic path (their global-ptr
deref is a separate deferred item). glob_ptr_field_test.ww gains an
off-8 row as the regression pin -- offset-0 cannot catch it because
ADDQ $0 is suppressed.
Surfaced by the fold-2 Fam-5 migration.
Continue fold-2: migrate the struct-by-value / sret round-trip family from
bespoke build+run C twins to test/lang @test, retiring each twin in the same
commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1 runs+asserts via
`ww test`) + test-lang-byteid (T2 keeps cs==ww .s byte-id); the $(TESTS)
headline drops 6. Every assert is a primitive int/u8/bool comparison (no
fmt/strconv in the assert path); each returned struct/tuple FIELD is asserted
individually so a dropped/mis-offset/over-wide word FAILS. 46 @test cases, a
strict superset of the 46 C rows (799=4, 925=10, 930=6, 949odd=7, 949chained=9,
949aggret=10).
799_tuple_sret_receive_run.c -> tuple_sret_receive_test.ww (#10 Fold B: over-4-GP tuple `([]u8,[]u8)` sret RECEIVE — destructure/single-var/return-forward/reassign; len() only on destructured bindings, never len(t.N))
925_sret_struct_return_run.c -> sret_struct_return_test.ww (#23: >24B sret round-trip; 32B/40B/nested/slice-payload, reassign-receive, struct16-by-value-arg #11 collision, N_IDENT return rhs, forward #9 simple/multi-arg/slice)
930_sret_narrow_field_run.c -> sret_narrow_field_test.ww (#33: sret narrow trailing-field copy — bool/u8/i16/i32 + mixed bool+i32+i64 after the 24B slice)
949_oddstruct_byval_ret_run.c -> oddstruct_byval_ret_test.ww (#107: by-value return of odd sub-8 size {3,5,6,7} single-eightbyte + 8/12/24 boundaries)
949_chained_dot_struct_copy_run.c -> chained_dot_struct_copy_test.ww (#107 sibling: chained-DOT `t.m.l = s` natural-size tail copy {0..7} + via-CX global dest; neighbour z is the oracle)
949_aggret_source_run.c -> aggret_source_test.ww (#272: aggregate return from every addressable source — arrlit/N_DOT/N_INDEX/deref/ident + >24B sret arm + global-receive caller-half)
This family is sret / struct-by-value-return (the #107/#38/#271/#272 ABI area):
all 6 new files are byte-id cs==ww (no fold-5 divergence surfaced). Bump
LANGBYTEID_EXPECTED_MIN 43->49 to ratchet the new corpus floor.
Continue fold-2: migrate the pointer-deref / narrow-load / pointer-array-stride
family from bespoke build+run C twins to test/lang @test, retiring each twin in
the same commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1 runs +
asserts via `ww test`) + test-lang-byteid (T2 keeps cs==ww .s byte-id); the
$(TESTS) headline drops 5. Every assert is a primitive int/bool comparison with
a width-preserving (`==`) sink so a stale high half or wrong stride FAILS; the
narrow-signed rows route through an `: i32` cast against a 64B-widened literal
to force sign-extension onto the load. Each .c row maps to one inline @test fn
(50 cases total, strict superset of the C rows):
947_deref_narrow_run.c -> deref_narrow_test.ww (#116, 10 rows: *p reads pointee width not 8B MOVQ; i32/u32/u8/i8/i16/u16 + !i32-alias + enum-i8 + bool/i64 controls)
949_ptrarr_index_run.c -> ptrarr_index_test.ww (#61, 23 rows: p[i]/(&p[i])/(*p)[i] stride by size(T); {1,2,4,8}B, const+var idx, param/local/cast bases, neighbor guards, nested *[2][3], *[3]str header, siphash round())
949_dotbase_arr_run.c -> dotbase_arr_test.ww (#135, 3 rows: (*struct).arrayfield[i] read/write/compound addresses the field)
944_def_amp_idx_run.c -> def_amp_idx_test.ww (#94, 6 rows: &D[i] over a def-array; +plain/read/2D controls)
944_alias_amp_idx_run.c -> alias_amp_idx_test.ww (#5, 8 rows: &a[i] over an alias-typed base classifies off the chased type; local/global, narrow, fwd-ref, plain+str controls)
The two sibling .c (949_dotbase_addr_slice_run, 944_alias_def_addr_run) stay in
$(TESTS): the first is run-only byteid=0 (#254 cs!=ww rows), the second carries
a LOUD rule-7 reject row — both routed to fold-3 (task #7). Bump
LANGBYTEID_EXPECTED_MIN 38->43.
Continue fold-2: migrate the global-value read/store/addr-of family (non-tagged)
from bespoke build+run C twins to test/lang @test, retiring each twin in the
same commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1 runs+asserts
via `ww test`) + test-lang-byteid (T2 keeps cs==ww .s byte-id); the $(TESTS)
headline drops 3 (421->418). All asserts are primitive int comparisons; fresh
globals are zeroed, so a store that misses the symbol reads back 0 and FAILS.
989_globptrfield_run.c -> glob_ptr_field_test.ww (scalar field store through a module-global *struct pointer loads the pointer from gp(SB), not saved BP; runtime gp=&backing form, static-init is #48-blocked)
989_globstructret_run.c -> glob_struct_ret_test.ww (returning a module-global struct ident by value copies g's bytes; rsz 16 + rsz 24, each field asserted)
989_dotbasehijack_run.c -> dotbase_hijack_test.ww (indexing an [N]T field of a module-global struct addresses the struct field, not an unrelated global sharing the field name; +typed-inner control +colliding-global-intact pin)
glob_ptr_field keeps only the .c's offset-0 row: an added non-zero-offset row
(gp.g=9) surfaced a cs!=ww divergence (cstage folds the offset into the store
displacement `MOVQ AX,8(BX)`; wwstage emits `ADDQ $8,BX; MOVQ AX,(BX)`) — a
latent global-*struct-pointer field-store divergence beyond the .c's coverage,
reported for the backlog, not carried here. Bump LANGBYTEID_EXPECTED_MIN 35->38.
Continue fold-2: migrate the #73 whole-struct field-copy ragged-tail test from a
bespoke build+run C twin to test/lang @test, retiring the twin in the same
commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1 runs+asserts via
`ww test`) + test-lang-byteid (T2 keeps cs==ww .s byte-id); coverage is
preserved, the $(TESTS) headline drops 1 (422->421). All four rows are pure
value-rows (no reject rows): each poisons `mark` at the inner struct's natural
offset, copies, then asserts every field back with primitive int comparisons, so
an 8-byte MOVQ that over-writes the ragged-tail successor FAILS.
989_structcopytail_run.c -> structcopytail_test.ww (tail2/tail6/tail7 ragged-tail copy preserves mark; ctl8 8-aligned control)
This is the only Family-3 file with no build-must-fail rows; the three
compound-OP= twins (948_idx_compound, 949_dotfield_compound, 949_idxfield_compound)
carry loud //ww:error reject rows a runtime @test cannot replicate and are
DEFERRED to a fold-3 value-split + reject-carrier pass (they stay fully in
$(TESTS), no coverage lost).
Bump LANGBYTEID_EXPECTED_MIN 34->35 to ratchet the new corpus floor.
Continue fold-2: migrate drew's Family 2 (def-dimensioned array len/cap/slice
resolution) from bespoke build+run C twins to test/lang @test, retiring each
twin in the same commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1
runs+asserts via `ww test`) + test-lang-byteid (T2 keeps cs==ww .s byte-id);
coverage is preserved, the $(TESTS) headline drops 3 (425->422). All asserts are
primitive int comparisons (no fmt/strconv in the assert path); the defcap rows
poison cap != len and assert both words so a dropped cap word FAILS.
989_defdim_field_run.c -> defdim_field_test.ww (`.len` field-read on a def-dim [MAX]T resolves from the type table: local/let-global/def cgdot arms + sum)
989_defdim_slice_run.c -> defdim_slice_test.ww (slicing a def-dim [MAX]T resolves len AND cap from the type table: default-hi + cgbasecap, local+global)
989_defdim_argslice_run.c -> defdim_argslice_test.ww (def-dim slice passed as a call arg resolves default-hi len in the N_SLICE arg-push arms; litctrl pins the N_INTLIT path)
Bump LANGBYTEID_EXPECTED_MIN 31->34 to ratchet the new corpus floor.
Continue fold-2 (after 374e97b): migrate the remaining Family-1 str/slice
global + literal + index + call-arg group from bespoke build+run C twins to
test/lang @test, retiring each twin in the same commit. Runtime coverage MOVES
from $(TESTS) to test-lang (T1 runs+asserts via `ww test`) + test-lang-byteid
(T2 keeps cs==ww .s byte-id); coverage is preserved, the $(TESTS) headline
drops 9 (434->425). All asserts are primitive int/u8/bool comparisons (no
fmt/strconv in the assert path); the slice-store/index rows reset the global
each fn and sum ADJACENT elements so a dropped/mis-strided/over-wide word FAILS.
989_globslicefield_run.c -> glob_slice_field_test.ww (slice field of a global struct: g.f=<slice> stores full 24B header; len/cap/non-zero-offset + str/scalar controls)
989_globstrslice_run.c -> glob_str_slice_arg_test.ww (global str sliced with default hi passed as call arg loads its len word; explicit-hi control)
989_trystr_run.c -> try_str_unwrap_test.ww (`!` unwrap of str-success tagged union shuffles the str header for ident-source/error-first/success-first)
797_len_strglobal_run.c -> len_str_global_test.ww (len(str-global) loads .len via name(SB); local-str control)
801_litstr_pseudo_run.c -> lit_str_pseudo_test.ww (string-literal .len/.ptr pseudo-field; empty/multibyte + arg-passthrough)
803_globalidx_run.c -> global_index_test.ww (global str/slice index read/addr-of/store/compound, esz 1/4; local regression pins)
903_tuple_elem_slice_len.c -> tuple_elem_slice_len_test.ww (len(t.N) of a slice/str tuple element loads .len at +8; 2/3-slice, str-slice both orders)
927_composite_call_arg_run.c-> composite_call_arg_test.ww (slice-returning CALL passed inline as a composite arg; canonical/letslice/two-call/middle/nested/scalar/tagged)
952_slicecopy_assign_run.c -> slice_copy_assign_test.ww (bulk slice-copy-assign `arr[lo:hi]=bs`, esz 1/4, field/via-ptr/local bases; reslice-read companion)
rd_reslice asserts the TRUE value 360 (the .c twin's want=104 was 360 & 0xFF,
an exit-code truncation). 723_composite_call_arg.c's comment repointed to the
new test/lang location. 802_lenidx_run.c is DEFERRED (it carries //ww:error
reject rows — needs a value-rows-only split + a slim reject carrier, a fold-3
pass). Bump LANGBYTEID_EXPECTED_MIN 22->31 to ratchet the new corpus floor.
Migrate the slice/str-header core of drew's Family 1 from bespoke
build+run C twins to test/lang @test, retiring each now-redundant twin in
the same commit. Runtime coverage MOVES from $(TESTS) to test-lang (T1
runs+asserts via `ww test`) + test-lang-byteid (T2 keeps cs==ww .s
byte-id); coverage is preserved, the $(TESTS) headline drops 6 (440->434).
All asserts are primitive int/u8/bool comparisons (no fmt/strconv in the
assert path); the slice-store families poison the slot (cap!=len) and read
it back so a dropped data word FAILS.
928_str_abi_run.c -> str_abi_test.ww (str 24B ABI: .len/.cap across literal/arg/return/field/tuple/deref/index/tagged)
941_slice_store_cap_run.c -> slice_store_cap_test.ww (slice value store through indexed/field/chained lhs writes full 24B header; cap==8)
942_subslice_cap_run.c -> subslice_cap_test.ww (sub-slice cap = base_cap-lo; array/slice/str/append-no-realloc/hi-default)
943_subslice_ptresz_run.c -> subslice_ptresz_test.ww (sub-slice ptr advances lo*esz bytes; esz 2/4/8, let + call-arg)
944_deref_slice_store_run.c-> deref_slice_store_test.ww(*p=sliceval whole-deref store writes 24B header; cap==8)
949_f6_header_run.c -> f6_header_test.ww (str/slice header partial load/store; .cap/.len after clobber)
Bump LANGBYTEID_EXPECTED_MIN 16->22 to ratchet the new corpus floor.
These test/wcc/*_run.c carriers were migrated to test/lang @test packages
(value-asserting under test-lang/T1) and now have a byte-id home under
test-lang-byteid/T2. With T1 wired into make test + test-commit (prior
commit), union(T1 runtime value-asserts + T2 .s byte-id) covers everything
each .c proved, so the C twins are pure-deletion redundant. Each retired
family below names the T1 twin that now carries its value obligation; every
twin was verified to READ the value/slot and ASSERT it (not merely compile),
including the pre-zeroed-slot families (it poisons cap!=len / spoils the base
so a wrong data word fails the read-back, which byte-id alone cannot catch).
989_gunsigned_run -> gunsigned_test (global unsigned opcode select)
989_chainidx_run -> chainidx_test (chained m[i][k] header load)
989_idxarg_run -> idxarg_test (indexed elem call-arg header push)
906_callret_unsigned_arith -> callret_unsigned_test (call-return unsigned arm)
912_sar_shr_run -> sar_shr_test (signed >> emits SAR)
793_widen_pad_zero_run -> widen_pad_test (#227 high-pad zeroing; reads pad)
932_str_elem_cap_run -> str_elem_cap_test (str-elem .cap full 24B load)
957_size_type_run -> size_type_test (`size` type-position bind)
933_str_field_cap_run -> str_field_cap_test (str field .cap read)
934_str_chained_field_cap_run-> str_chained_field_cap_test (chained field .cap)
935_str_tuple_elem_cap_run -> str_tuple_elem_cap_test (tuple-elem str .cap)
936_str_arrfield_cap_run -> str_arrfield_cap_test (array-field str .cap)
937_str_arrfield_store_cap_run -> str_arrfield_store_cap_test (array-field store)
938_str_chainfield_store_cap_run-> str_chainfield_store_cap_test (chain-field store)
939_str_massign_store_cap_run -> str_massign_store_cap_test (multi-assign store)
110_uniesc_run.c is KEPT: it carries a .wwi round-trip sep-build (exit 42)
the uniesc_test twin does not replicate (HAS-UNIQUE-MODE, deferred).
test-lang runs each test/lang/*_test.ww @test through the cstage ww
driver (the runtime value-assert leg, T1). It existed as a standalone
target but was not in any aggregate gate, so the pre-push gate carried
only test-lang-byteid (T2) for these families — and T2 is compile-only
(-c, .s byte-id), blind to a both-stages-wrong value. Wiring T1 in gives
make test and test-commit the runtime value coverage that the test/wcc
.c twins currently provide, the precondition for retiring those twins.
Kept out of test-unit (inner loop stays fast) and run-always in
test-commit (NOT in the content-key skip set — caching a value gate
reintroduces silent-skip-of-value). Isolated WW_PKGCACHE=$(OUT)/langcache
so concurrent make -j cannot corrupt the default cache.
Compiles every test/lang/*_test.ww twice through the same cstage ww
orchestrator swapping only the frontend (WW_W6C = w6c vs w6c_ww) and
asserts every per-package <pkg>.s (incl the synth-main __root.s) is
byte-identical. This is the rule-10 stage-symmetry gate test/runww.ww
reserves as T2. .s-only (Q3); .o/.wwi are 991/992's surface. Distinct
WW_PKGCACHE per leg, both caches+sepworks wiped per file. Recipe is
parameterized over an input-class (file-list + build-verb); only the
test/lang class ships now, fold-6 slots in build --sep for selfhost/data.
Wired into make test (pre-push) only, not test-commit/test-unit.
Fan out the str-cap read (933-936) and store (937-939) families into in-language @test files, following the 932 str_elem_cap template. Additive: the *_run.c stay in the C corpus (they are the only wwstage-runtime net for these cs==ww byte-id-blind shapes); de-dup deferred to fold 6.
Per-shape @test fns, not a data table: each fn varies the codegen shape (base reg / chain depth / tuple return-ABI / store position), so the row-array idiom (blocked by #111) would lose coverage. Read family keeps the spoil()/register-clobber + junk==44 discrimination where the .c has it; store family pre-poisons the slot via a path distinct from the store under test. Asserts are primitives only.
Two more value-observable families ported additively (the .c sources
keep running in $(TESTS); de-dup deferred to fold 6).
932_str_elem_cap -> str_elem_cap_test: a str-element N_INDEX value
read must load the full 24B {ptr,len,cap}, not {ptr,len} (F2); each
shape poisons cap != len so a 2-word read fails the .cap assert.
Template for the 933-939 cap family.
957_size_type -> size_type_test: `size` binds in type position and
coexists with the size(T) operator (#85); a green row is the bind
proof.
Three more value-observable behavior families ported from the C corpus
to in-language @test, routed by the ratified observability rule (value
-> test/lang @test; process-outcome stays in runww). Additive: the .c
sources keep running in $(TESTS), so no byte-id coverage is removed --
de-dup is deferred to fold 6 (task #12).
906_callret_unsigned_arith -> callret_unsigned_test: call-result
unsigned opcode select keyed by callee return type (#168, the N_CALL
twin of gunsigned's module-global #134); operands flow through real
calls so the return-type arm is exercised, not N_IDENT.
912_sar_shr -> sar_shr_test: signed >> / >>= must emit SAR not SHR
(#136); asserts the i64/i32 value directly, dropping the C 8-bit
exit-code encoding.
793_widen_pad_zero -> widen_pad_test: widening a narrow value into a
wider tagged slot zeroes the high pad words (#227).
The four test/lang/*_test.ww in-language @test files had no make target
running them — dead coverage that could rot silently. Add a standalone
test-lang target running each through the cstage `ww test` subcommand
(one package per invocation; set -e gives the gate teeth). Imports
resolve via the driver's self_dir/../../lib fallback, so no lib env.
Kept out of make test/test-unit/test-commit: that wiring is fold 6 and
is gated on the T1 behavior corpus reaching parity before byte-id is
demoted to pre-push.
Batch 2 of the test-arch reframe. These three are codegen-SHAPE tests,
not data-row tests: each subject is a distinct node shape (N_IDENT
module-global read; chained N_INDEX m[i][k]; index-base node-kind). A
[N]struct row-table would interpose its own N_INDEX/N_DOT lowering and
mask the shape under test, so each uses per-shape @test fns with direct
asserts (rob-ratified rule: table where the row is data, per-fn where
the row is a codegen shape). Lossless from the matching
989_{gunsigned,chainidx,idxarg}_run.c; additive (C kept); both stages green.
