Hojun-Cho
62c7771594
Per-package .a archives are written by a self-hosted deterministic ar writer (zeroed mtime/uid/gid, fixed mode 100644, stable member order) so cstage and wwstage emit byte-identical archives. The linker force-loads the root .o positionally and pulls deps from .a; a post-pull PASS-3 over unloaded members reports duplicate symbols through the archive (#31). Both stages mirrored (cmd/ + selfhost/). USER-ruled D2 (self-hosted ar writer); pike P1/P2 link model. Gate 989_separchive_run proves cs.a==ww.a byte-identity, 3x-determinism, link-consumes-.a (exit 7), and the masked-dup-through-.a loud fire.
326 lines
11 KiB
C
326 lines
11 KiB
C
/*
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* 989_separchive_run — M3-tail commit-5a gate (#46, task #62): the
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* per-package `.a` substrate + its archive-path #31 dup-detect, both
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* stages, COLD. Commit 5a makes `ww build --sep` wrap each DEP package's
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* `.o` in a deterministic single-member `.a` (cstage archive_o /
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* wwstage archiveo) and link the ROOT as a positional `.o` (force-loaded)
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* + dep `.a` reverse-topo + libwwrt.a. The #31 dup the selective pull
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* would mask is caught by a post-pull PASS 3 in w6l/w6l_ww load_archive.
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*
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* Legs (all COLD — `<stem>.sepwork` is wiped each run):
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* 1. POSITIVE: root→helper builds + runs exit 7, BOTH stages, through
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* the `.a` link path (root `.o` + helper `.a`).
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* 2. ★ DETERMINISM (ken, load-bearing): re-archive the same package 3×
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* → byte-identical `.a` (proves zeroed mtime/uid/gid + fixed mode +
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* fixed member name; a floating md5 would poison the 5b cache key).
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* 3. ★ cs `.a` == ww `.a` (rule 10, the NEW byte-id substrate ken binds):
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* the dep `.a` from `ww --sep` is byte-identical to the one from
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* `ww_ww --sep`.
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* 4. ★ #31 dup THROUGH the `.a` path (ken #263 + D3, the leg that proves
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* PASS 3 closed the selective-pull hole): two DEP packages each export
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* the same link symbol via `@symbol("dup_sym")`, referenced by root.
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* One dep's member is pulled; the OTHER lands UNPULLED and defines an
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* already-`defined` name — exactly what selective-pull skips. BOTH
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* stages must (exit≠0) ∧ (stderr contains "duplicate symbol") ∧ (no
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* partial binary). NON-VACUITY flip: give the second dep a DISTINCT
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* symbol → both stages build + run (exit 3), proving the leg actually
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* discriminates (without PASS 3 the dup leg would WRONGLY pass green).
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* 5. ACHIEVABLE-parity posture (same as c4's 989_sepcycle_dup, because
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* #61 is a separate commit): cs vs ww is `both exit≠0 ∧ both stderrs
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* contain "duplicate symbol"` — NOT exact-stderr-equal (cstage names
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* `<path>: duplicate symbol <sym>`, wwstage the bare form).
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*
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* Light wwstage-driver test (CLAUDE.md rule 14): all fixtures + scratch
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* live under /tmp, COLD each run. Models 989_sepbuild_run.c conventions.
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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/wait.h>
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#include <sys/stat.h>
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#define EXPECT_EXIT 7
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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 const char *
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absbin(void)
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{
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const char *b = getenv("BIN");
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if (!b) b = "out/bin";
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if (b[0] == '/') return b;
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static char buf[2048];
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return NULL;
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snprintf(buf, sizeof buf, "%s/%s", cwd, b);
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return buf;
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}
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static int
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slurp(const char *path, char **outbuf, size_t *outlen)
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{
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FILE *f = fopen(path, "rb");
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if (!f) return -1;
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fseek(f, 0, SEEK_END);
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long n = ftell(f);
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fseek(f, 0, SEEK_SET);
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if (n < 0) { fclose(f); return -1; }
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char *b = malloc((size_t)n + 1);
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if (!b) { fclose(f); return -1; }
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if (fread(b, 1, (size_t)n, f) != (size_t)n) { free(b); fclose(f); return -1; }
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b[n] = '\0';
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fclose(f);
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*outbuf = b;
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*outlen = (size_t)n;
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return 0;
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}
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static int
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files_eq(const char *a, const char *b)
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{
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char *ba = NULL, *bb = NULL;
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size_t na = 0, nb = 0;
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if (slurp(a, &ba, &na) < 0 || slurp(b, &bb, &nb) < 0) {
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free(ba); free(bb);
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return -1;
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}
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int eq = (na == nb && memcmp(ba, bb, na) == 0);
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free(ba); free(bb);
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return eq ? 0 : 1;
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}
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static int
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file_has(const char *path, const char *needle)
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{
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char *b = NULL;
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size_t n = 0;
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if (slurp(path, &b, &n) < 0) return 0;
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int found = (strstr(b, needle) != NULL);
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free(b);
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return found;
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}
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static int
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write_file(const char *path, const char *body)
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{
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FILE *f = fopen(path, "wb");
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if (!f) return -1;
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fputs(body, f);
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fclose(f);
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return 0;
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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 = absbin();
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if (!bin) return 1;
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char td[64], cmd[8192];
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int fail = 0;
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snprintf(td, sizeof td, "/tmp/wwar_%d", getpid());
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snprintf(cmd, sizeof cmd, "rm -rf %s", td);
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runwait(cmd);
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mkdir(td, 0755);
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/* ---- root → helper fixture (one dep `.a`) ------------------------ */
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char helpdir[1024], helpww[1100], rootww[1100];
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snprintf(helpdir, sizeof helpdir, "%s/helper", td);
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mkdir(helpdir, 0755);
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snprintf(helpww, sizeof helpww, "%s/h.ww", helpdir);
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snprintf(rootww, sizeof rootww, "%s/root.ww", td);
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if (write_file(helpww,
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"package helper;\n"
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"export fn val() i32 = { return 7; };\n") ||
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write_file(rootww,
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"package main;\n"
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"import helper;\n"
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"fn main() i32 = { return helper.val(); };\n")) {
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fail++; goto out;
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}
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struct { const char *drv, *tag; char prog[1024]; }
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stg[] = { { "ww", "cs", {0} }, { "ww_ww", "ww", {0} } };
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/* Leg 1: POSITIVE build + run through the `.a` path, both stages. */
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for (int s = 0; s < 2; s++) {
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snprintf(stg[s].prog, sizeof stg[s].prog, "%s/prog.%s", td, stg[s].tag);
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snprintf(cmd, sizeof cmd,
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"timeout 240 %s/%s build --sep -I %s -o %s %s >/dev/null 2>&1",
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bin, stg[s].drv, td, stg[s].prog, rootww);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "separchive FAIL: %s build --sep\n", stg[s].drv);
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fail++;
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continue;
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}
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int rc = runwait(stg[s].prog);
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if (rc != EXPECT_EXIT) {
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fprintf(stderr, "separchive FAIL: %s prog exit=%d expected %d\n",
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stg[s].drv, rc, EXPECT_EXIT);
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fail++;
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}
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}
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/* Root is a positional `.o` (force-loaded), so NO __root.a exists;
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* the dep is the only `.a`. Assert the layout the driver produced. */
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{
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char roota[1100], rooto[1100], helpa[1100];
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snprintf(roota, sizeof roota, "%s/prog.cs.sepwork/__root.a", td);
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snprintf(rooto, sizeof rooto, "%s/prog.cs.sepwork/__root.o", td);
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snprintf(helpa, sizeof helpa, "%s/prog.cs.sepwork/helper.a", td);
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if (access(roota, 0) == 0) {
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fprintf(stderr, "separchive FAIL: root wrapped in .a "
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"(should stay positional .o)\n");
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fail++;
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}
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if (access(rooto, 0) != 0) {
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fprintf(stderr, "separchive FAIL: missing root .o\n");
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fail++;
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}
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if (access(helpa, 0) != 0) {
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fprintf(stderr, "separchive FAIL: missing dep helper.a\n");
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fail++;
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}
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}
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/* Leg 3: cs `.a` == ww `.a` (rule 10, the new byte-id substrate). */
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{
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char a[1100], b[1100];
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snprintf(a, sizeof a, "%s/prog.cs.sepwork/helper.a", td);
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snprintf(b, sizeof b, "%s/prog.ww.sepwork/helper.a", td);
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if (files_eq(a, b) != 0) {
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fprintf(stderr, "separchive FAIL: cs helper.a != ww helper.a "
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"(rule 10 .a byte-id)\n");
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fail++;
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}
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}
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/* Leg 2: DETERMINISM — re-archive the same package 3× (cold each),
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* the `.a` must be byte-identical (zeroed mtime/uid/gid, fixed mode,
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* fixed member name). Copy each build's helper.a aside, compare. */
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{
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char det[3][1100];
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int ok = 1;
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for (int i = 0; i < 3; i++) {
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char prog[1100];
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snprintf(prog, sizeof prog, "%s/det%d", td, i);
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snprintf(cmd, sizeof cmd,
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"timeout 240 %s/ww build --sep -I %s -o %s %s >/dev/null 2>&1",
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bin, td, prog, rootww);
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if (runwait(cmd) != 0) { ok = 0; break; }
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snprintf(det[i], sizeof det[i], "%s/det%d.sepwork/helper.a", td, i);
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}
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if (!ok) {
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fprintf(stderr, "separchive FAIL: determinism build\n");
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fail++;
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} else if (files_eq(det[0], det[1]) != 0 ||
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files_eq(det[1], det[2]) != 0) {
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fprintf(stderr, "separchive FAIL: .a not deterministic across "
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"3 builds (floating md5 → poisons 5b cache)\n");
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fail++;
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}
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}
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/* ---- Leg 4: #31 dup THROUGH the `.a` path (PASS 3) --------------- */
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/* Two DEP packages each export the SAME link symbol via @symbol;
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* root references both. One member is pulled, the other lands
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* UNPULLED defining an already-`defined` name → the masked dup PASS 3
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* catches (#53 path-qualifies normal exports, so @symbol is the
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* cleanest forced cross-package clash). */
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char pkgad[1024], pkgbd[1024], paww[1100], pbww[1100], droot[1100];
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snprintf(pkgad, sizeof pkgad, "%s/pkga", td);
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snprintf(pkgbd, sizeof pkgbd, "%s/pkgb", td);
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mkdir(pkgad, 0755); mkdir(pkgbd, 0755);
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snprintf(paww, sizeof paww, "%s/a.ww", pkgad);
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snprintf(pbww, sizeof pbww, "%s/b.ww", pkgbd);
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snprintf(droot, sizeof droot, "%s/droot.ww", td);
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if (write_file(paww,
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"package pkga;\n"
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"@symbol(\"dup_sym\") export fn afn() i32 = { return 1; };\n") ||
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write_file(pbww,
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"package pkgb;\n"
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"@symbol(\"dup_sym\") export fn bfn() i32 = { return 2; };\n") ||
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write_file(droot,
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"package main;\n"
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"import pkga;\n"
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"import pkgb;\n"
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"fn main() i32 = { return pkga.afn() + pkgb.bfn(); };\n")) {
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fail++; goto out;
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}
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for (int s = 0; s < 2; s++) {
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char prog[1100], errf[1100];
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snprintf(prog, sizeof prog, "%s/dup.%s", td, stg[s].tag);
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snprintf(errf, sizeof errf, "%s/dup.%s.err", td, stg[s].tag);
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snprintf(cmd, sizeof cmd,
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"timeout 240 %s/%s build --sep -I %s -o %s %s >/dev/null 2>%s",
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bin, stg[s].drv, td, prog, droot, errf);
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int rc = runwait(cmd);
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if (rc == 0) {
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fprintf(stderr, "separchive FAIL: %s accepted a masked "
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"cross-pkg dup through .a (exit 0 — PASS 3 missing?)\n",
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stg[s].drv);
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fail++;
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}
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if (!file_has(errf, "duplicate symbol")) {
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fprintf(stderr, "separchive FAIL: %s missing 'duplicate "
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"symbol' on the .a dup path\n", stg[s].drv);
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fail++;
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}
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if (access(prog, 0) == 0) {
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fprintf(stderr, "separchive FAIL: %s produced a partial "
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"binary on the dup reject\n", stg[s].drv);
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fail++;
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}
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}
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/* Leg 4 NON-VACUITY: give pkgb a DISTINCT symbol → no collision →
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* both stages build + run (exit 3 = 1 + 2). Proves the dup leg
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* actually discriminates (not a vacuous always-fail). */
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if (write_file(pbww,
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"package pkgb;\n"
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"@symbol(\"uniq_sym\") export fn bfn() i32 = { return 2; };\n")) {
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fail++; goto out;
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}
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for (int s = 0; s < 2; s++) {
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char prog[1100];
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snprintf(prog, sizeof prog, "%s/ok.%s", td, stg[s].tag);
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snprintf(cmd, sizeof cmd,
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"timeout 240 %s/%s build --sep -I %s -o %s %s >/dev/null 2>&1",
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bin, stg[s].drv, td, prog, droot);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "separchive FAIL(non-vacuity): %s could not "
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"build the distinct-symbol graph\n", stg[s].drv);
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fail++;
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continue;
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}
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int rc = runwait(prog);
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if (rc != 3) {
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fprintf(stderr, "separchive FAIL(non-vacuity): %s prog "
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"exit=%d expected 3\n", stg[s].drv, rc);
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fail++;
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}
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}
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out:
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snprintf(cmd, sizeof cmd, "rm -rf %s", td);
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runwait(cmd);
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if (fail) {
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fprintf(stderr, "separchive: %d check(s) failed\n", fail);
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return 1;
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}
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printf("separchive: per-pkg .a (root=.o force-load, deps=.a) build+run "
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"(exit %d) + .a determinism (3x identical) + cs.a==ww.a (rule 10) + "
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"#31 masked-dup reject THROUGH .a (PASS 3, both stages loud+non-zero, "
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"non-vacuity flip exit 3)\n", EXPECT_EXIT);
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return 0;
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}
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