moon/zygotec/tests/conformance/4-statements, branch main

duplicate case labels are an error (b.2.15); unterminated string literal reported where it starts (b.2.11); an unreachable droppable cycle drops whole in one collection (6.15.3)

2026-10-15T14:59:55+00:00

constant expressions: c precedence and / % ^ (b.1.3); local const usable in constant expressions (b.1.7, b.2.16); zc0 matches

2026-10-15T14:55:36+00:00

rt: memreport marks a leaked value whose drop never ran with (drop); spec 4.11, readme, memdebug_report_drop.zc

2026-10-14T23:10:51+00:00

conformance: defer block form without a trailing semicolon, several statements and a local, at a return and at the end of the scope

2026-10-14T17:55:06+00:00

defer: any single statement (if/else, loops, switch, unchecked, unbounded), not just an expression or a block

2026-10-14T17:54:34+00:00

rt: exact-size heap bounds; n, the words new asked for, lives in bits 32..62 of p[-4]

2026-10-14T15:05:03+00:00

the bnd recipe and paylen read n instead of the power-of-two block: bnd: r6 = sub p 3; r6 = ld r6; r7 = xor p 0x2B7E1516; r6 = eq r6 r7; r7 = sub p 4; r7 = ld r7; r7 = shr r7 32; r7 = mul r7 q; r8 = mul i m; r8 = ltu r8 r7; r8 = xor r8 1; r0 = and r6 r8 paylen: return p[-4] >> 32 two loads instead of three; osize, bchk, release, recycle and the memdebug leak report all read n (rt.new(4) has length 4, rt.new(0) has 0). writers: new_raw and new_k set n; stack.h line 87 and tinyvm.ts (BigInt) set it on stack segments. release clears n when a block goes into quarantine (len 0, indexing traps; under memdebug bchk reports a use after free); every free-list path (fpush, mkblock, bdrop, recycle_leaf, balloc hold) rewrites the word as k << 16, and an array that grows gets a fresh block. a request over 2^31-1-HDR words stops in new_raw (oom), and the compiler only takes the new_k fast path for constant sizes that fit, so n is never truncated. bit users checked (all mask or preserve bits 32..62; none compares or copies the whole word): gc mark and sweep; release, free, recycle, recycle_leaf; share and own; isobj, quar, checkptr, obj_base; bclass and the bfree buddy merge; balloc, mkblock, fpush, funlink, heap_grow; frame_grow; stack_allocate in src/core/stack.h and src/js/tinyvm.ts; micro.c and core.c (check word only); the compiler's two p[-4] | F_INTERNAL writes (base.zc, builtins.zc). 32-bit ports: none (baremetal, wasm and micro use int64 Cell). tests: tests/programs/exactsize.zc (n-1/n for non-power-of-two sizes, new(0), packed bytes, recycle, grow, stack growth); 8-runtime: exact_size_bounds, pointer_index_n_minus_1, pointer_index_n_traps, pointer_index_n_traps_memdebug, new_zero_index_traps, new_too_big_traps, stale_index_after_free_traps, stale_index_after_free_memdebug. expectations changed: leak report shows n (tests/test.sh line 169, examples/learn/13-memdebug.out, docs/LEARN.md, 4-statements/memdebug_report_line.zc). programs adjusted to keep test.sh expectations: quarantine.zc (unbounded), bounds_heap.zc (rt.new(11)). spec 3.7.4 and 4.11 updated. fixpoint 402204 words (main 402197).

switch: case member(): with no names matches a tagged member by tag even when it has fields (spec 4.7.3)

2026-10-14T12:27:41+00:00

memdebug: accept 'memdebug scrub;' (the check compared against rt.scrub); the scrub program reads the freed word through asm

2026-10-14T12:26:59+00:00

conformance: port the previous agent's suite, fix six expectations, add sections 5 to 8 and appendix b, known.txt, zc0 skips, wire into test.sh

2026-10-14T12:19:27+00:00

agent/spec-conformance: unmerged work from previous session

2026-10-14T12:09:03+00:00