Hojun-Cho
d5cb1bd69e
The TK_AMP N_INDEX arm keyed arrayness off the SYNTACTIC tnode (local leg isarr at the baselocal read; global leg isglobalarr/isglobalptr at the letvartnode read) — an alias-typed base (tnode N_TNAME) missed the N_TARRAY gate, so the base materialized as MOVQ (element-0 VALUE) instead of LEAQ (storage address): wild pointer, SEGV/corruption on the deref. SILENT class (metric-1). The global leg graduated from latent to live when g-fold #77/#78 landed alias-global DATA emit. Fix re-keys both legs off tichase(base.type_) gated on TY_NAMED — the landed cgindex #60 idiom (cgenexpr.ww:1800-1820). cstage already classifies off the chased type (type_chase_named, cmd/w6c/cgen.c: 4172-4188) and is the runtime-correct reference: align ww UP. esz does NOT move — elemsizeofc chases internally since batch-2 (PREMISE-2 probe-confirmed via amp_narrow: stride right, base wrong pre-fix). Non-alias rows byte-id-neutral by construction (TY_NAMED gate). Pin: 944_alias_amp_idx_run, 8 rows through the taken pointer (plain local/global+str controls hold 0/0; 1/2-level alias local + global, fwd-ref decl order, narrow [4]u32 graduate cs0/wwSEGV-byte-id-NO -> 0/0 byte-id). Probed OUT, filed not fixed (spec §1 NOTE-2): &D[i] def-array base breaks at a DIFFERENT site both stages (cs XORQ BX,BX zero-base cgen.c:4209-4212, ww complex-base fallback; both SEGV 139). Light gates: test-unit 289 green; sizelint 0; 989 ratchet zero flips (31 ID / 9 DIVERGE / 3 WWREJECT pins hold); five-mains NEUTRAL vs master-74195ac scratch build on identical inputs + cs==ww on all five. combined.ww regens ride along (#110).
296 lines
9.0 KiB
C
296 lines
9.0 KiB
C
/*
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* 944_alias_amp_idx_run — #5 alias arc F2a batch 3 c1 (task #82):
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* cgun's TK_AMP N_INDEX classify keyed arrayness off the SYNTACTIC
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* tnode — `&a[i]` over an alias-typed base (tnode N_TNAME) missed the
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* N_TARRAY gate, so the base materialized as MOVQ (element-0 VALUE)
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* instead of LEAQ (storage address): wild pointer, ww SEGV 139 on the
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* deref (silent-wrong class; esz was already alias-correct via the
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* batch-2 elemsizeofc chase, so ONLY the base classify moved). The
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* global leg (isglobalarr/isglobalptr) graduated from latent to live
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* when g-fold #77/#78 landed alias-global DATA emit. cstage already
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* classifies off the chased type (type_chase_named, cgen.c:4172-4188)
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* and is the runtime-correct reference; the fix re-keys both legs off
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* tichase(base.type_) gated on TY_NAMED — the landed cgindex #60 idiom
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* (cgenexpr.ww:1800-1820) — so non-alias rows are byte-id-neutral by
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* construction.
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*
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* row | shape | want
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* -----------+-----------------------------------------------+-----
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* amp_ctrl | plain [4]int local; p=&a[2]; *p=..; readback | 0
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* amp_l1 | 1-level alias local array, &a[3] w+r via ptr | 0
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* amp_l2 | 2-level alias local | 0
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* amp_order | type decl AFTER the let (fwd-ref) | 0
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* amp_narrow | alias [4]u32, &a[3] (last elem, narrow elem: |
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* | stride was already right, base was wrong) | 0
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* amp_g1 | alias-typed GLOBAL array, &g[3] | 0
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* amp_g2 | 2-level alias global | 0
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* amp_gctrl | plain global array &g[3] + global str &s[3] |
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* | (the #11 legs hold) | 0
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*
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* All reads/writes go THROUGH THE TAKEN POINTER (direct `a[i]` reads
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* are 944_alias_idx_family's landed rows — different layer). Values
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* exceed 255 to break little-endian prefix-luck; the LAST element is
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* checked. Pre-fix: controls 0/0 byte-id; all six alias rows cs 0 /
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* ww SEGV 139, byte-id NO. Post-fix: every row 0/0 byte-id.
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*
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* Deliberately NOT pinned (filed, predicted by the batch-3 spec §1
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* NOTE-2): `&D[i]` with a DEF-array base — broken at a DIFFERENT site
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* both stages (cs XORQ BX,BX zero-base cgen.c:4209-4212; ww
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* complex-base fallback), a missing-leg defect, not this tnode-kind
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* read.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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static int
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runwait(const char *cmd)
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{
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int rc = system(cmd);
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if (rc == -1) return -1;
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if (WIFEXITED(rc)) return WEXITSTATUS(rc);
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return -1;
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}
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static int
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slurp_eq(const char *a, const char *b)
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{
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FILE *fa = fopen(a, "rb");
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FILE *fb = fopen(b, "rb");
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if (!fa || !fb) { if (fa) fclose(fa); if (fb) fclose(fb); return -1; }
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int rc = 0;
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for (;;) {
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int ca = fgetc(fa), cb = fgetc(fb);
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if (ca != cb) { rc = -1; break; }
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if (ca == EOF) break;
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}
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fclose(fa); fclose(fb);
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return rc;
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}
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struct row { const char *label; const char *src; int want; };
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static const struct row rows[] = {
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{ "amp_ctrl",
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"package main;\n"
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"export fn main() i32 = {\n"
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" let a: [4]int = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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" let p: *int = &a[2];\n"
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" if (*p != 3000) { return 1; };\n"
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" *p = 7777;\n"
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" if (a[2] != 7777) { return 2; };\n"
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" let q: *int = &a[3];\n"
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" if (*q != 4000) { return 3; };\n"
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" return 0;\n"
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"};\n", 0 },
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{ "amp_l1",
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"package main;\n"
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"type arr = [4]int;\n"
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"export fn main() i32 = {\n"
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" let a: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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" let p: *int = &a[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 8888;\n"
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" if (a[3] != 8888) { return 2; };\n"
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" return 0;\n"
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"};\n", 0 },
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{ "amp_l2",
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"package main;\n"
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"type arr = [4]int;\n"
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"type arr2 = arr;\n"
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"export fn main() i32 = {\n"
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" let a: arr2 = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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" let p: *int = &a[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 9999;\n"
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" if (a[3] != 9999) { return 2; };\n"
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" return 0;\n"
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"};\n", 0 },
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{ "amp_order",
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"package main;\n"
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"export fn main() i32 = {\n"
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" let a: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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" let p: *int = &a[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 8888;\n"
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" if (a[3] != 8888) { return 2; };\n"
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" return 0;\n"
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"};\n"
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"type arr = [4]int;\n", 0 },
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/* Narrow element: the batch-2 elemsizeofc chase already strides
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* u32 right (PREMISE-2) — this row pins that the BASE was the
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* only wrong half. */
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{ "amp_narrow",
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"package main;\n"
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"type A = [4]u32;\n"
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"export fn main() i32 = {\n"
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" let a: A = [1000: u32, 2000: u32, 3000: u32, 4000: u32];\n"
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" let p: *u32 = &a[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 5555;\n"
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" if (a[3] != 5555) { return 2; };\n"
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" return 0;\n"
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"};\n", 0 },
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{ "amp_g1",
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"package main;\n"
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"type arr = [4]int;\n"
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"let g: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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"export fn main() i32 = {\n"
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" let p: *int = &g[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 8888;\n"
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" if (g[3] != 8888) { return 2; };\n"
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" return 0;\n"
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"};\n", 0 },
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{ "amp_g2",
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"package main;\n"
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"type arr = [4]int;\n"
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"type arr2 = arr;\n"
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"let g: arr2 = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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"export fn main() i32 = {\n"
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" let p: *int = &g[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 9999;\n"
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" if (g[3] != 9999) { return 2; };\n"
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" return 0;\n"
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"};\n", 0 },
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/* Plain-global + global-str controls: the #11 legs (isglobalarr
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* LEAQ / str isglobalptr MOVQ) must hold byte-id. */
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{ "amp_gctrl",
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"package main;\n"
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"let g: [4]int = [1000: int, 2000: int, 3000: int, 4000: int];\n"
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"let s: str = \"wxyz\";\n"
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"export fn main() i32 = {\n"
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" let p: *int = &g[3];\n"
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" if (*p != 4000) { return 1; };\n"
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" *p = 7777;\n"
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" if (g[3] != 7777) { return 2; };\n"
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" let q: *u8 = &s[3];\n"
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" if (*q != 'z') { return 3; };\n"
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" return 0;\n"
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"};\n", 0 },
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};
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static int
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run_driver(const char *driver, const struct row *r, int i)
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{
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char src[96], tmpdir[96], errf[96], cmd[1024];
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snprintf(src, sizeof src, "/tmp/aai_%d_%d.ww", getpid(), i);
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snprintf(tmpdir, sizeof tmpdir, "/tmp/aai_%d_d_%d", getpid(), i);
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snprintf(errf, sizeof errf, "/tmp/aai_%d_e_%d", getpid(), i);
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FILE *f = fopen(src, "wb");
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if (!f) return -1;
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fputs(r->src, f);
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fclose(f);
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mkdir(tmpdir, 0755);
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snprintf(cmd, sizeof cmd,
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"cd %s && timeout 20 %s build %s >/dev/null 2>%s",
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tmpdir, driver, src, errf);
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int brc = runwait(cmd);
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if (brc != 0) {
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fprintf(stderr, "row[%s]: build via %s failed\n",
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r->label, driver);
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unlink(src); unlink(errf); rmdir(tmpdir);
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return -1;
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}
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const char *base = strrchr(src, '/');
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base = base ? base + 1 : src;
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char outbin[256];
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snprintf(outbin, sizeof outbin, "%s/%s", tmpdir, base);
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char *dot = strrchr(outbin, '.');
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if (dot && strcmp(dot, ".ww") == 0) *dot = '\0';
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int got = runwait(outbin);
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unlink(src); unlink(outbin); unlink(errf); rmdir(tmpdir);
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if (got != r->want) {
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fprintf(stderr, "row[%s]: %s exit %d, want %d\n",
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r->label, driver, got, r->want);
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return 1;
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}
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return 0;
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}
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static int
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asm_byte_identical(const char *bin, const struct row *r, int i)
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{
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char src[96], cs[96], ws[96], cmd[1024];
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snprintf(src, sizeof src, "/tmp/aai_asm_%d_%d.ww", getpid(), i);
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snprintf(cs, sizeof cs, "/tmp/aai_asm_%d_%d_c.s", getpid(), i);
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snprintf(ws, sizeof ws, "/tmp/aai_asm_%d_%d_w.s", getpid(), i);
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FILE *f = fopen(src, "wb");
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if (!f) return -1;
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fputs(r->src, f);
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fclose(f);
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snprintf(cmd, sizeof cmd, "%s/w6c -o %s %s 2>/dev/null", bin, cs, src);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "row[%s]: w6c errored\n", r->label);
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unlink(src);
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return -1;
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}
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snprintf(cmd, sizeof cmd, "%s/w6c_ww -o %s %s 2>/dev/null",
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bin, ws, src);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "row[%s]: w6c_ww errored\n", r->label);
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unlink(src); unlink(cs);
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return -1;
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}
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int rc = slurp_eq(cs, ws);
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if (rc != 0)
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fprintf(stderr, "row[%s]: cstage vs wwstage asm differs\n",
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r->label);
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unlink(src); unlink(cs); unlink(ws);
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return rc;
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}
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int
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main(void)
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{
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const char *bin = getenv("BIN");
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if (!bin) bin = "out/bin";
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char absbin[2080];
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if (bin[0] != '/') {
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return 1;
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snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
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bin = absbin;
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}
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char cdrv[2120], wdrv[2120];
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snprintf(cdrv, sizeof cdrv, "%s/ww", bin);
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snprintf(wdrv, sizeof wdrv, "%s/ww_ww", bin);
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int n = (int)(sizeof rows / sizeof rows[0]);
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int total = 0, fail = 0;
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for (int i = 0; i < n; i++) {
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total++;
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if (run_driver(cdrv, &rows[i], i) != 0) fail++;
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}
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if (access(wdrv, X_OK) == 0) {
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for (int i = 0; i < n; i++) {
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total++;
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if (run_driver(wdrv, &rows[i], i) != 0) fail++;
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}
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for (int i = 0; i < n; i++) {
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total++;
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if (asm_byte_identical(bin, &rows[i], i) != 0) fail++;
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}
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}
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if (fail) {
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fprintf(stderr, "alias_amp_idx: %d/%d checks failed\n",
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fail, total);
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return 1;
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}
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printf("alias_amp_idx: %d/%d ok\n", total, total);
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return 0;
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}
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