a367bf984ee92fd1709fd39e7a2a98514feec00f
4 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
| 0ce98cc5dc |
wcc+w6c_ww: append() spread place-chain sources via cgplaceaddr (#35)
#35 (fold-5 blocker, PG6): the append() spread arm dispatched on SOURCE node kind — ident-local only; both fold-5 dup shapes loud-rejected on BOTH stages: deref-spine `append(dup, (*tsp)[0].caps...)` (add_thread regex.ha:569/572) and indexed `append(res, ts[0].caps...)` (search ha:820). Route every non-ident-local source through cgplaceaddr (the established place choke-point: C1 stores, C1.25 aggregate fields, FA1 append targets, #49 element sources): the source header ADDRESS resolves ONCE, pre-grow, into a fresh per-site @appsprscr spill, and every loop iteration re-reads .ptr/.len THROUGH the spilled header after the grow. This adapts the #49 split ruling to the spread's full-range copy: the chain's rvalues (deref-root pointer expr, index exprs) evaluate exactly once PRE-grow — an index reading the dst's len sees the pre-append value — while the source data base and len re-derive live each iteration, so a source header aliasing the dst header re-roots post-realloc. A header reached through a buffer the grow reallocs reads the STALE copy — bit-identical under the non-reclaiming rt/malloc, the same documented #49 stale-base hole (pinned by the spread_selfalias_chain row). Ident-local sources keep the legacy BP-disp emission byte-identical. New loudness with the same fix: the spread source's stamped type must chase to TY_SLICE/TY_STR — a [N]T array ident source previously read its first 16 DATA bytes as a {ptr,len} header, silently. Array wiring plus the remaining rvalue sources (CALL, slicing exprs) stay loud, filed task #27. Global-ident sources now resolve on cstage but are blocked by a pre-existing wwstage checker reject ("let: not assignable", task #29) — no dual-stage row until that closes. 806_append_place: reject_spread_src GRADUATES to a runtime row (spread_place_deref, the old reject source verbatim + readback); new rows spread_dup_copy (PG6 verbatim: both fold-5 shapes, 56B capture elements, copy-semantics mutation pin, want 139), spread_place_kinds (str 24B headers / narrow i32 / empty deref source), spread_growth_place (40-elem spread crossing cap doublings), spread_selfalias_chain (source header inside the dst's grown buffer), and the two new loud-tail rejects (CALL rvalue, [N]T array) pinning the "#35:" diagnostic on both stages. 87 fixtures green (was 70), per-row cs/ww asm byte-cmp included. Unblocks regex fold-5a: add_thread regex.ha:569/572 + search ha:820 spreads go from loud-bound to real spread. |
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| c34a48a81f |
wcc+w6c_ww: append() struct-element sources via split place-resolve (#49)
#49 (#35's single-element sibling, tranche-C pre-check PC2): the
struct-element append arm dispatched on SOURCE node kind — N_STRUCTLIT
(literal fill) and N_IDENT (local word-copy) only; every
place-resolvable chain died on the rule-7 fatal in BOTH stages,
including search()'s result-build line
`append(res, threads[best_idx].root_capture)` (regex.ha:819).
Wire those shapes with a SPLIT resolve around the grow (the #49
ruling): the chain's rvalues — deref-root pointer expr, index expr —
evaluate exactly once PRE-grow into @appendsroot/@appendsoff (an index
reading the slice header sees the pre-append len, Hare's argument
order), then only the BASE re-derives POST-grow from the live storage
and the stashed offsets land back on top, so a self-append source
re-roots in the post-realloc buffer. harec resolves an aggregate
source address wholly PRE-grow (gen.c: gen_load returns the address
for STORAGE_STRUCT, gen_store copies after rt.ensure) — a
use-after-free under a reclaiming allocator; per #263 we align to the
runtime-correct side, not the reference. A pointer ALIASING the grown
buffer keeps Hare's own stale-base hole (sound today only because
rt/malloc.ww never reclaims). Supported shapes are bounded: root
(local/global ident | deref) + at most one index + trailing direct
fields; all else stays on the #34 fatal, including CALL rvalues (the
#42-style bound, new reject row pins the text in both stages). The
N_STRUCTLIT/N_IDENT fast-paths keep their emission byte-identical.
806_append_place grows eight rows: indexed-field 56B capture (the
ha:819 shape, header readback), computed-index whole element,
deref-spine param pair, deref source, self-append ×33 crossing three
cap-doubling reallocs, the split-order semantics pin (a CALLED index
helper reading len must run once and see the PRE-grow len — the
pre-split emission failed exactly there), an element-kind ×
place-source matrix row (scalar/narrow/str/slice/tagged route via the
pre-existing arms — regression net), and the CALL-source reject. The
six fix rows verified FAILING against a pristine
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| 76994a8279 |
wcc+w6c_ww: typed dot-read resolver — kill both silent N_DOT fallbacks (F4)
A typed depth-2+ field chain behind an index/deref spine (threads[0].cap.end, (*p)[i].f.g) aborted the cgdot chain walker (N_IDENT roots only) and fell into the module-qualified-leaf fallback — a silent `MOVQ <leaf>(SB)` global read of a colliding symbol (p6min10 exit 66) or a link error. Single-dot reads behind a deref- index ((*ts)[i].pc, (*p)[i].slicefield) fell into the bottom catch-all instead, which is offset- and header-blind: offset-0 scalars read correctly by COINCIDENCE, nonzero offsets and slice headers were silently wrong in BOTH stages (FA3, pA5). `&threads[0].cap` dropped the address-of silently and SEGFAULTed at the deref (task #6, reviewer-A route). cgplaceaddr (C1) grows an N_IDENT root (local / let / DATA-backed def) and the N_INDEX base gate relaxes to recursion, so indexed-ident and deref-rooted spines resolve; enumerated arms still dispatch first, keeping every pre-C1 shape's asm. case N_DOT routes any TYPED read no arm matched through the resolver (scalar fldloadop, float X0, str/ slice 3-word header, [N]T address); the module-leaf fallback is gated to UNTYPED chains, the catch-all to untyped-str pseudo-fields, and the TK_AMP tail is resolver-or-loud. Leaf kinds without a register convention (tagged, aggregate) and unaddressable shapes die LOUD (rule 7). wwstage mirrors symmetrically; two of its arm gaps must not take the resolver (its sequence differs from cstage's arms — cs!=ww): ident-indexed alias reads loud-cite C3 (task #8) and non-local-rooted ptr-chains loud-cite task #37. A third verdict divergence is comment- documented at the wwstage aggregate gate: cstage's let-init consumes `let c = (*ts)[i].cap` BEFORE its N_DOT tail (emitting NO copy — the F5 bug), so that shape cs-builds/ww-louds until the F5 let-copy lands (task #7); absent from the gate corpus. 806 identroot_dot graduates from BUILD_FAIL: the C2 ident root makes append(h.xs, v) through *holder resolve via C1.5's place consumer (run-verified, byte-id). p6min9/p6min10 read-halves are fixed but the probes stay blocked on the #36 literal under-copy this commit unmasked (struct-ident field rhs copies 8B; repro filed with the task). test/805: +7 rows (typed depth-2 behind ident-index incl the 777 global-collision pin, deref-index, width/float/[N]u8 matrix, FA3 slice-field + .cap-behind-spine, &-route with compound-through- pointer, C1's reject_tail graduated to stores, neutrality pins) and +4 reject rows pinning the new loud texts; the C1.25 raw-byte readbacks graduate to typed depth-2 reads. |
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| b630a7cf20 |
wcc+w6c_ww: append through pointer-to-slice place via cgplaceaddr (FA1)
Re-key the append() lowering from BP-displacement assumptions onto a resolver-provided header PLACE (task #15, the add_thread hard-blocker; cgplaceaddr's third consumer after C1/C1.25). One mirrored choke-point, two failure modes: cstage 0-defaulted sn_off for any non-ident target, so 0(BP)/8(BP) became the "slice header" and rt_ensure corrupted the CALLER frame (SIGSEGV); wwstage cgappend silently emitted nothing (gate-blind cs!=ww). cg_append_grow/cg_append_slot (mirror cgappendgrow/cgappendslot) factor the 5 grow + 5 slot header-access sites. Ident-local targets keep the legacy BP-disp emission byte-identical (probed across all 9 existing source shapes, before/after .s). Non-ident targets resolve once through cgplaceaddr and spill the header address to an @apphdrscr slot: rt_ensure may realloc .ptr but never moves the header, so the slot stays valid; every access reloads from it. The slot is allocated fresh per append SITE, not cached per fn: a nested append-through-pointer inside a value expression (match-yield arm) spills its own resolve, and a shared slot would hand the outer grow/slot reloads the inner target's header — silent cross-slice corruption (pinned by the reentrant_value row). Indirect mode keys esz/element-kind/load-op off the checker-stamped target tinfo (no declared tnode behind `*p`; the #209/#211 discipline). Unwired target places die LOUD "#15: append() target place unsupported (rule-7)" on BOTH stages — the silent-corruption class is closed by construction. The FA4/#35 boundary is unchanged: non-ident spread SOURCES stay loud (pinned by a reject row). Surfaced pre-existing checker divergence filed as task #34 (wwstage rejects global slice-lit let). test/wcc/806: 14 runtime rows (element kinds x target shapes, spread, narrow-signed spread load, cap-crossing realloc loop with branched callee + caller-frame sentinels, deref-spine target, nested-append reentrancy, direct-arm neutrality pin) + 2 exact-text reject rows, both drivers + per-row cs==ww asm byte-id. |
