/* * 944_alias_amp_idx_run — #5 alias arc F2a batch 3 c1 (task #82): * cgun's TK_AMP N_INDEX classify keyed arrayness off the SYNTACTIC * tnode — `&a[i]` over 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, ww SEGV 139 on the * deref (silent-wrong class; esz was already alias-correct via the * batch-2 elemsizeofc chase, so ONLY the base classify moved). The * global leg (isglobalarr/isglobalptr) graduated from latent to live * when g-fold #77/#78 landed alias-global DATA emit. cstage already * classifies off the chased type (type_chase_named, cgen.c:4172-4188) * and is the runtime-correct reference; the fix re-keys both legs off * tichase(base.type_) gated on TY_NAMED — the landed cgindex #60 idiom * (cgenexpr.ww:1800-1820) — so non-alias rows are byte-id-neutral by * construction. * * row | shape | want * -----------+-----------------------------------------------+----- * amp_ctrl | plain [4]int local; p=&a[2]; *p=..; readback | 0 * amp_l1 | 1-level alias local array, &a[3] w+r via ptr | 0 * amp_l2 | 2-level alias local | 0 * amp_order | type decl AFTER the let (fwd-ref) | 0 * amp_narrow | alias [4]u32, &a[3] (last elem, narrow elem: | * | stride was already right, base was wrong) | 0 * amp_g1 | alias-typed GLOBAL array, &g[3] | 0 * amp_g2 | 2-level alias global | 0 * amp_gctrl | plain global array &g[3] + global str &s[3] | * | (the #11 legs hold) | 0 * * All reads/writes go THROUGH THE TAKEN POINTER (direct `a[i]` reads * are 944_alias_idx_family's landed rows — different layer). Values * exceed 255 to break little-endian prefix-luck; the LAST element is * checked. Pre-fix: controls 0/0 byte-id; all six alias rows cs 0 / * ww SEGV 139, byte-id NO. Post-fix: every row 0/0 byte-id. * * Deliberately NOT pinned (filed, predicted by the batch-3 spec §1 * NOTE-2): `&D[i]` with a DEF-array base — broken at a DIFFERENT site * both stages (cs XORQ BX,BX zero-base cgen.c:4209-4212; ww * complex-base fallback), a missing-leg defect, not this tnode-kind * read. */ #include #include #include #include #include #include static int runwait(const char *cmd) { int rc = system(cmd); if (rc == -1) return -1; if (WIFEXITED(rc)) return WEXITSTATUS(rc); return -1; } static int slurp_eq(const char *a, const char *b) { FILE *fa = fopen(a, "rb"); FILE *fb = fopen(b, "rb"); if (!fa || !fb) { if (fa) fclose(fa); if (fb) fclose(fb); return -1; } int rc = 0; for (;;) { int ca = fgetc(fa), cb = fgetc(fb); if (ca != cb) { rc = -1; break; } if (ca == EOF) break; } fclose(fa); fclose(fb); return rc; } struct row { const char *label; const char *src; int want; }; static const struct row rows[] = { { "amp_ctrl", "package main;\n" "export fn main() i32 = {\n" " let a: [4]int = [1000: int, 2000: int, 3000: int, 4000: int];\n" " let p: *int = &a[2];\n" " if (*p != 3000) { return 1; };\n" " *p = 7777;\n" " if (a[2] != 7777) { return 2; };\n" " let q: *int = &a[3];\n" " if (*q != 4000) { return 3; };\n" " return 0;\n" "};\n", 0 }, { "amp_l1", "package main;\n" "type arr = [4]int;\n" "export fn main() i32 = {\n" " let a: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n" " let p: *int = &a[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 8888;\n" " if (a[3] != 8888) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "amp_l2", "package main;\n" "type arr = [4]int;\n" "type arr2 = arr;\n" "export fn main() i32 = {\n" " let a: arr2 = [1000: int, 2000: int, 3000: int, 4000: int];\n" " let p: *int = &a[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 9999;\n" " if (a[3] != 9999) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "amp_order", "package main;\n" "export fn main() i32 = {\n" " let a: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n" " let p: *int = &a[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 8888;\n" " if (a[3] != 8888) { return 2; };\n" " return 0;\n" "};\n" "type arr = [4]int;\n", 0 }, /* Narrow element: the batch-2 elemsizeofc chase already strides * u32 right (PREMISE-2) — this row pins that the BASE was the * only wrong half. */ { "amp_narrow", "package main;\n" "type A = [4]u32;\n" "export fn main() i32 = {\n" " let a: A = [1000: u32, 2000: u32, 3000: u32, 4000: u32];\n" " let p: *u32 = &a[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 5555;\n" " if (a[3] != 5555) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "amp_g1", "package main;\n" "type arr = [4]int;\n" "let g: arr = [1000: int, 2000: int, 3000: int, 4000: int];\n" "export fn main() i32 = {\n" " let p: *int = &g[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 8888;\n" " if (g[3] != 8888) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "amp_g2", "package main;\n" "type arr = [4]int;\n" "type arr2 = arr;\n" "let g: arr2 = [1000: int, 2000: int, 3000: int, 4000: int];\n" "export fn main() i32 = {\n" " let p: *int = &g[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 9999;\n" " if (g[3] != 9999) { return 2; };\n" " return 0;\n" "};\n", 0 }, /* Plain-global + global-str controls: the #11 legs (isglobalarr * LEAQ / str isglobalptr MOVQ) must hold byte-id. */ { "amp_gctrl", "package main;\n" "let g: [4]int = [1000: int, 2000: int, 3000: int, 4000: int];\n" "let s: str = \"wxyz\";\n" "export fn main() i32 = {\n" " let p: *int = &g[3];\n" " if (*p != 4000) { return 1; };\n" " *p = 7777;\n" " if (g[3] != 7777) { return 2; };\n" " let q: *u8 = &s[3];\n" " if (*q != 'z') { return 3; };\n" " return 0;\n" "};\n", 0 }, }; static int run_driver(const char *driver, const struct row *r, int i) { char src[96], tmpdir[96], errf[96], cmd[1024]; snprintf(src, sizeof src, "/tmp/aai_%d_%d.ww", getpid(), i); snprintf(tmpdir, sizeof tmpdir, "/tmp/aai_%d_d_%d", getpid(), i); snprintf(errf, sizeof errf, "/tmp/aai_%d_e_%d", getpid(), i); FILE *f = fopen(src, "wb"); if (!f) return -1; fputs(r->src, f); fclose(f); mkdir(tmpdir, 0755); snprintf(cmd, sizeof cmd, "cd %s && timeout 20 %s build %s >/dev/null 2>%s", tmpdir, driver, src, errf); int brc = runwait(cmd); if (brc != 0) { fprintf(stderr, "row[%s]: build via %s failed\n", r->label, driver); unlink(src); unlink(errf); rmdir(tmpdir); return -1; } const char *base = strrchr(src, '/'); base = base ? base + 1 : src; char outbin[256]; snprintf(outbin, sizeof outbin, "%s/%s", tmpdir, base); char *dot = strrchr(outbin, '.'); if (dot && strcmp(dot, ".ww") == 0) *dot = '\0'; int got = runwait(outbin); unlink(src); unlink(outbin); unlink(errf); rmdir(tmpdir); if (got != r->want) { fprintf(stderr, "row[%s]: %s exit %d, want %d\n", r->label, driver, got, r->want); return 1; } return 0; } static int asm_byte_identical(const char *bin, const struct row *r, int i) { char src[96], cs[96], ws[96], cmd[1024]; snprintf(src, sizeof src, "/tmp/aai_asm_%d_%d.ww", getpid(), i); snprintf(cs, sizeof cs, "/tmp/aai_asm_%d_%d_c.s", getpid(), i); snprintf(ws, sizeof ws, "/tmp/aai_asm_%d_%d_w.s", getpid(), i); FILE *f = fopen(src, "wb"); if (!f) return -1; fputs(r->src, f); fclose(f); snprintf(cmd, sizeof cmd, "%s/w6c -o %s %s 2>/dev/null", bin, cs, src); if (runwait(cmd) != 0) { fprintf(stderr, "row[%s]: w6c errored\n", r->label); unlink(src); return -1; } snprintf(cmd, sizeof cmd, "%s/w6c_ww -o %s %s 2>/dev/null", bin, ws, src); if (runwait(cmd) != 0) { fprintf(stderr, "row[%s]: w6c_ww errored\n", r->label); unlink(src); unlink(cs); return -1; } int rc = slurp_eq(cs, ws); if (rc != 0) fprintf(stderr, "row[%s]: cstage vs wwstage asm differs\n", r->label); unlink(src); unlink(cs); unlink(ws); return rc; } int main(void) { const char *bin = getenv("BIN"); if (!bin) bin = "out/bin"; char absbin[2080]; if (bin[0] != '/') { char cwd[1024]; if (getcwd(cwd, sizeof cwd) == NULL) return 1; snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin); bin = absbin; } char cdrv[2120], wdrv[2120]; snprintf(cdrv, sizeof cdrv, "%s/ww", bin); snprintf(wdrv, sizeof wdrv, "%s/ww_ww", bin); int n = (int)(sizeof rows / sizeof rows[0]); int total = 0, fail = 0; for (int i = 0; i < n; i++) { total++; if (run_driver(cdrv, &rows[i], i) != 0) fail++; } if (access(wdrv, X_OK) == 0) { for (int i = 0; i < n; i++) { total++; if (run_driver(wdrv, &rows[i], i) != 0) fail++; } for (int i = 0; i < n; i++) { total++; if (asm_byte_identical(bin, &rows[i], i) != 0) fail++; } } if (fail) { fprintf(stderr, "alias_amp_idx: %d/%d checks failed\n", fail, total); return 1; } printf("alias_amp_idx: %d/%d ok\n", total, total); return 0; }