/* * 941_tuple_slot_layout_run — tuple arc C-t0: SLOT layout is the tuple * SSoT (user-ratified). The checker's TY_TUPLE size counts the stride * cgen's cursor transport actually writes — a str/slice its 24B header, * everything else (narrow scalars included) one 8B eightbyte — and the * t.N read walks stride the same slots. * * Pre-C-t0 there were TWO answers: the checker summed PACKED element * sizes ((u32,u32) = 8B) while every cursor transport site strode 8B * slots (16B). The 16B shapes were blind to the split (slot == packed); * the packed shapes hit it everywhere: * - `let t: (u32,u32) = f()` — cstage's receive keys on the checker * size (16/32), so sz=8 fell to the generic single-word store * (word 1 DROPPED) and the packed read walk then read the wrong * offsets. wwstage (slot-keyed throughout) was runtime-CORRECT * here — inverted polarity vs the 16B #33 map, gate-blind. * - a (u32,u32) by-value param: cgfn's receive walk spilled * 8B/element into a local sized from the PACKED checker size (8B) * — word 1 landed on the saved-BP slot, frame corruption, SIGSEGV. * - a mixed (u32,f64)/(u32,str) tuple: packed sz (12/28) missed the * 16/32 receive arms entirely — silent drop on both stages. * * The send-side ABI skew (#32, C-t2) and the wwstage literal-let * receive (#33, C-t1) are SEPARATE bugs pinned by their own commits; * this test pins the layout unification only: * * row | shape | want * ---------------------+--------------------------------------+----- * letcall_packed | let t:(u32,u32)=f(); t.0/t.1 | 0 * letcall_float_packed | (u32,f64) from call, X0 element | 0 * letcall_signed_packed| (i32,i32) negatives — MOVSXD reads | 0 * letcall_mixed_packed | (u32,str): 28B packed missed the 32B | * | arm; len(t.1) strides a full slot | 0 * len_elem_packed | len(t.1) of (u32,str) — #235 arm's | * | slot stride (was BP+4+8) | (in mixed row) * letcall_16_neutral | (i64,i64) — slot==packed, anchor | 0 * letcall_32_neutral | (i64,str) — 32B arm, anchor | 0 * mlet_packed_neutral | let (a,b) = f() packed — per-element | * | locals, layout-independent anchor | 0 * * Every row also asserts cstage/wwstage asm byte-id. * NNN<950, self-contained (/tmp, no imports) — rule-14's * selfhost-sibling race does not apply (903/940/945 precedent). */ #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[] = { { "letcall_packed", "package main;\n" "fn f() (u32, u32) = {\n" " return (3, 4);\n" "};\n" "export fn main() i32 = {\n" " let t: (u32, u32) = f();\n" " if (t.0 != 3) { return 1; };\n" " if (t.1 != 4) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "letcall_float_packed", "package main;\n" "fn f() (u32, f64) = {\n" " let a: u32 = 9;\n" " let x: f64 = 2.5;\n" " return (a, x);\n" "};\n" "export fn main() i32 = {\n" " let t: (u32, f64) = f();\n" " if (t.0 != 9) { return 1; };\n" " if (t.1 != 2.5) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "letcall_signed_packed", "package main;\n" "fn f() (i32, i32) = {\n" " let a: i32 = -5;\n" " let b: i32 = -6;\n" " return (a, b);\n" "};\n" "export fn main() i32 = {\n" " let t: (i32, i32) = f();\n" " if (t.0 != -5) { return 1; };\n" " if (t.1 != -6) { return 2; };\n" " if (t.0 + t.1 != -11) { return 3; };\n" " return 0;\n" "};\n", 0 }, { "letcall_mixed_packed", "package main;\n" "fn f() (u32, str) = {\n" " let a: u32 = 7;\n" " let s: str = \"hello\";\n" " return (a, s);\n" "};\n" "export fn main() i32 = {\n" " let t: (u32, str) = f();\n" " if (t.0 != 7) { return 1; };\n" " if (len(t.1) != 5) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "letcall_16_neutral", "package main;\n" "fn f() (i64, i64) = {\n" " return (41, 17);\n" "};\n" "export fn main() i32 = {\n" " let t: (i64, i64) = f();\n" " if (t.0 != 41) { return 1; };\n" " if (t.1 != 17) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "letcall_32_neutral", "package main;\n" "fn f() (i64, str) = {\n" " let a: i64 = 12;\n" " let s: str = \"wxyz\";\n" " return (a, s);\n" "};\n" "export fn main() i32 = {\n" " let t: (i64, str) = f();\n" " if (t.0 != 12) { return 1; };\n" " if (len(t.1) != 4) { return 2; };\n" " return 0;\n" "};\n", 0 }, { "mlet_packed_neutral", "package main;\n" "fn f() (u32, u32) = {\n" " return (3, 4);\n" "};\n" "export fn main() i32 = {\n" " let (a, b) = f();\n" " if (a != 3) { return 1; };\n" " if (b != 4) { return 2; };\n" " return 0;\n" "};\n", 0 }, }; /* build+run via a driver (ww / ww_ww); returns 0 pass, nonzero fail. */ 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/tsl_%d_%d.ww", getpid(), i); snprintf(tmpdir, sizeof tmpdir, "/tmp/tsl_%d_d_%d", getpid(), i); snprintf(errf, sizeof errf, "/tmp/tsl_%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 && %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; } /* cs==ww .s byte-id (rule 10). */ 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/tsl_asm_%d_%d.ww", getpid(), i); snprintf(cs, sizeof cs, "/tmp/tsl_asm_%d_%d_c.s", getpid(), i); snprintf(ws, sizeof ws, "/tmp/tsl_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, "tuple_slot_layout: %d/%d checks failed\n", fail, total); return 1; } printf("tuple_slot_layout: %d/%d ok\n", total, total); return 0; }