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* rt: exact-size heap bounds; n, the words new asked for, lives in bits 32..62 ↵Gravatar zinc 2026-10-1421-37/+191
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | of p[-4] 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).
* merge work/jit2: compiled o3 regions on x86-64Gravatar zinc 2026-10-145-14/+271
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| * x86-64 o3 regions: header comment, readme, bench note and todoGravatar zinc 2026-10-144-7/+8
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| * tests: x86-64 o3 regions compile and match the region interpreterGravatar zinc 2026-10-141-1/+5
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| * x86-64 jit: compile o3 regions (vars in their frame slots, six value ↵Gravatar zinc 2026-10-141-6/+258
| | | | | | | | registers); ZYO3INTERP=1 keeps the region interpreter
* | merge work/spec: appendix b round, zc0umd rewriteGravatar zinc 2026-10-1429-74/+200
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| * Merge branch 'main' into work/specGravatar zinc 2026-10-144-15/+36
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* | merge work/xref: zc0 u*d redo and follow-upsGravatar zinc 2026-10-144-15/+36
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| * | zc0: a store into a local embed array is an error (its elements are in the ↵Gravatar zinc 2026-10-143-8/+27
| | | | | | | | | | | | code); test in tests/test.sh
| * | zc0: free the saved token when the local-embed lookahead returns earlyGravatar zinc 2026-10-141-1/+1
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| * | zc0: u*x, m*x, d*x are products when u, m or d is a visible local or global ↵Gravatar zinc 2026-10-142-6/+8
| | | | | | | | | | | | (spec 1.6.3); redone from zc-spec's 2f2597b
| | * len: len on a char* is an error with typecheck off too (appendix b.2.14)Gravatar zinc 2026-10-144-6/+6
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| | * prototypes: parameters may be unnamed, int f(int, int*); (appendix b.2.13)Gravatar zinc 2026-10-145-5/+24
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| | * bool: normalising into a bool keeps an incompatible source type, so the ↵Gravatar zinc 2026-10-141-1/+2
| | | | | | | | | | | | return type check still fires (fixes typeerrors/ret.zc after b.2.6)
| | * as: the type after as is read greedily in both compilers; x as int * y is a ↵Gravatar zinc 2026-10-144-6/+10
| | | | | | | | | | | | syntax error (appendix b.2.12 settled, no compiler change)
| | * lexer: a block comment that is never closed is 'unterminated comment' ↵Gravatar zinc 2026-10-146-5/+11
| | | | | | | | | | | | (appendix b.2.11)
| | * bool: a value stored into a bool is normalised to 0 or 1 (appendix b.2.6)Gravatar zinc 2026-10-145-4/+16
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| | * enum: a member is defined as soon as it is declared, so later values can ↵Gravatar zinc 2026-10-145-7/+18
| | | | | | | | | | | | name it (appendix b.2.2)
| | * Merge branch 'main' into work/specGravatar zinc 2026-10-1415-38/+498
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* | | merge work/jit2: x86-64 jit inline enhancementsGravatar zinc 2026-10-148-9/+400
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| * | | x86-64 jit: header comment and todo for inlined enhancementsGravatar zinc 2026-10-142-3/+4
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| * | | rt: note the two definitions of a heap block's length (bnd recipe, paylen)Gravatar zinc 2026-10-141-0/+4
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| * | | x86-64 jit: inline enhancements (micro-ops lowered to registers, literal ↵Gravatar zinc 2026-10-145-5/+369
| | | | | | | | | | | | | | | | specialization, ZYNOENH=1 to call xrun); enh_ops test; jit_x64_test in test.sh
| * | | core: an enhancement's ld reads 0 past 2^32 in xexec too (mread took an ↵Gravatar zinc 2026-10-141-1/+1
| | | | | | | | | | | | | | | | int), as the jits and the microcore do
| * | | test: a constant loop bound drops the fixed-array bounds check (bounds_proof)Gravatar zinc 2026-10-142-0/+22
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* | | | merge work/xref: zc0 gaps a-fGravatar zinc 2026-10-148-29/+98
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| * | todo: zc0 gaps doneGravatar zinc 2026-10-141-1/+1
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| * | Merge branch 'main' into work/xrefGravatar zinc 2026-10-1433-60/+327
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| * | history: 43-stdlib notes point forward to zc0 no longer reserving u, m and dGravatar zinc 2026-10-141-0/+4
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| * | zc0: integer literals as the compiler reads them (010 is 10, 0x is 0, values ↵Gravatar zinc 2026-10-142-13/+20
| | | | | | | | | | | | wrap modulo 2^64)
| * | zc0: embed of an array type inside a functionGravatar zinc 2026-10-142-2/+15
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| * | zc0: x as T reads a whole type (x as int*, x as char**)Gravatar zinc 2026-10-142-1/+16
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| * | zc0: reject .u on a typed parameter with the compiler's messageGravatar zinc 2026-10-142-1/+10
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| * | zc0: string literals have no length limit (the token text grows)Gravatar zinc 2026-10-142-11/+32
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| | * globals: an integer constant initializing a float or f32 global converts to ↵Gravatar zinc 2026-10-143-2/+12
| | | | | | | | | | | | float (float g = 2; is 2.0)
| | * zc0umd: no recast uses a visible u/m/d as its tag (spec 1.6.3); spec: the ↵Gravatar zinc 2026-10-142-25/+33
| | | | | | | | | | | | fixed appendix b bugs are marked fixed
| | * Revert "zc0: read integer literals like the compiler: decimal with leading ↵Gravatar zinc 2026-10-142-12/+13
| | | | | | | | | | | | | | | | | | zeros, 0x hex, wrapping (appendix b.1.11)" This reverts commit 76fc2643d1df7da7c83f7b58fe7e8459f487b816.
| | * Revert "zc0: u*x, m*x, d*x are products when u, m or d is a visible local or ↵Gravatar zinc 2026-10-143-8/+7
| | | | | | | | | | | | | | | | | | global (spec 1.6.3)" This reverts commit 2f2597bd753fa04edc8cf51ffe9fd324965224d2.
| | * Merge branch 'main' into work/specGravatar zinc 2026-10-1431-66/+362
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* | | merge bounds checkingGravatar zinc 2026-10-1433-60/+327
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| * | bounds checking: constant loop bound proof works, plain-op fixed-array ↵Gravatar zinc 2026-10-1410-19/+58
| | | | | | | | | | | | check, docs (readme, spec 4.15 and friends, server, vscode), conformance and test.sh fixes, todo
| * | bounds checking: port agent/bounds-checking onto main 0879d0a; unbounded ↵Gravatar zinc 2026-10-1425-46/+274
| | | | | | | | | | | | main in o3call, o3 tests expect no check, boundsrules, bounds_fixed, bounds_heap and zc0unbounded tests
* | | merge: memdebug obj_base via size classesGravatar zinc 2026-10-145-10/+39
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| * | | memdebug: obj_base finds the header from the buddy size classes, not a ↵Gravatar zinc 2026-10-145-10/+39
| | | | | | | | | | | | | | | | 64-word scan; regression program
| | | * rt.zdiv: INT_MIN / -1 is INT_MIN and % is 0 in software division too, so zc0 ↵Gravatar zinc 2026-10-142-2/+1
| | | | | | | | | | | | | | | | programs agree with spec 3.4.3
| | | * zc0: u*x, m*x, d*x are products when u, m or d is a visible local or global ↵Gravatar zinc 2026-10-143-7/+8
| | | | | | | | | | | | | | | | (spec 1.6.3)
| | | * zc0: read integer literals like the compiler: decimal with leading zeros, 0x ↵Gravatar zinc 2026-10-142-13/+12
| | | | | | | | | | | | | | | | hex, wrapping (appendix b.1.11)
| | | * conformance: appendix b items the spec body documents are class cGravatar zinc 2026-10-141-4/+4
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| | | * ternary: an int side and a float side convert the int on its own path only ↵Gravatar zinc 2026-10-143-5/+16
| | | | | | | | | | | | | | | | (appendix b.2.5)
| | | * include: written inside a function body is 'include is top level only' ↵Gravatar zinc 2026-10-144-2/+4
| | | | | | | | | | | | | | | | (appendix b.2.9)
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