New `w6c -I <out.wwi>` flag (both stages) writes a re-parseable
ww-prototype rendering of a package's EXPORTED surface. M2 dead-code:
nothing consumes .wwi yet (combined.ww stays the live path); the flag is
off on every existing invocation, so the 990-997 byte-id gates and all
prior tests are unperturbed.
The unparse walks the AST type-expr subtree (N_T* nodes), not the
tinfo Type* (which collapses nominal pkg.Name identity). Deterministic
output: package line, byte-sorted imports, byte-sorted decls — a pure
function of the exported API. cmd/w6c/wwi.c + selfhost/cmd/wcc/wwi.ww
emit byte-identical .wwi (new cross-stage byte-id substrate, rule 10).
check_exported_type (drew) rides the producer entry, flag-gated: an
exported signature naming a non-exported nominal is loud-rejected before
any byte is written, identically on both stages. Ports harec
check.c:4092-4168, recursing the type-AST and gating on the resolved
SK_TYPE sym's decl export flag (Sym.exported is vestigial in both
stages; the predeclared synthetic `nomem` decl carries no source
position and is treated as a builtin leaf — cstage parity).
Two wwstage checker AST-mutations are normalized to cstage's pristine
view for byte-id: the N_TPARAM tuple-element wrapper (unwrapped) and the
variadic `T...`→`[]T` param desugar (peeled).
Gate 989_m2wwi_run: ascii/strings/getopt each produce a .wwi that
re-parses (wwdump -a) and is cs==ww byte-identical; a private-type-leak
fixture is rejected identically by both stages (non-vacuous check).
Both stages emitted fn TEXT labels by leaf only; lib/os and lib/io
exporting the same leaves (read, write, close) collided at link.
lib/fmt + lib/log worked around with @symbol("rt_syscall") stubs.
Drop d->export from the fn skip rule in mod_collect (both stages) so
exported fns mangle as <module>.<name>. Let/def/type keep current
behavior. Skip retained for {@symbol, main, empty-module}.
Add cur_mod thread through cgfn + mod_lookup_for_fn(name, hint) at
all 4 label-emit sites (TEXT def, LEAQ N_IDENT, CALL N_IDENT, CALL
N_DOT). Wwstage mirror: emitfnname + modlookupforfn + curmod.
Invariant comment pinned in both stages.
ww2 == ww3 == ww4 byte-identical at the new label format.
706_fnlabel_mangle covers same-leaf cross-module CALL + private-leaf
cur_mod disambiguation through a fn-pointer rvalue.
Wwstage LEAQ-of-fn N_DOT (`let p = mod.fn` rvalue) is a pre-existing
gap; deferred to a follow-up. fmt/log rt_syscall stubs untouched
here; cleanup follows.
Plan 9-style w-prefix on the per-arch tools, disambiguating from the
real Plan 9 6c/6a/6l in ref/plan9front/:
cmd/wwc/ → cmd/wcc/ libwwc.a → libwcc.a
cmd/6{c,a,l} → cmd/w6{c,a,l} binary names too
test/wwc/ → test/wcc/ 6 test files w/ w6 prefix
selfhost/cmd mirror in lockstep
bootstrap/amd64/{w6c,w6a,w6l} snapshot binaries (gitignored)
WW_6{C,A,L} → WW_W6{C,A,L} env-var overrides
Plan 9 source-tree refs ("Plan 9 6c shape", ref/plan9front/, etc.)
preserved. Hare-style driver, both C and ww sides:
ww test [path] discover *_test.ww in a directory module, run
each; single-file mode for `ww test foo.ww`
Module-by-name `ww build foo` resolves to foo.ww or foo/foo.ww
via search path (cwd : -I dirs : $WW_LIB)
Default-to-cwd `ww build` / `ww test` build the cwd module
Run pass-through `ww run path arg1 arg2` reaches the program
lib/os: getcwd (79) and getdents64 (217) syscalls power `.` resolution
and directory enumeration on the ww side.
Makefile: wwstage tool deps now include lib/os/os.ww (+ lib/strconv
for wwdump_ww) so lib/* edits force their rebuild instead of leaving
stale binaries — surfaced when test 995 first failed against a stale
w6c_ww built before the lib/os additions.
Test 993 byte-identical parity gate (C-side ww vs ww-side ww_ww on a
build corpus) stays green; all 19 tests pass.
