Hojun-Cho
eb6083e54a
The driver flip moves build artifacts from next-to-source <stem>.s to a .sepwork/ scratch dir. 29 Pattern-B gates now build `ww build --sep -o <stem>` and read <stem>.sepwork/__root.s (multi-package gates concat all <stem>.sepwork/*.s, since cross-package labels live in per-package .s). All intermediates redirect to /tmp (WW_PKGCACHE + -o), so the corpus runs parallel-safe with no source-tree pollution. Tests pass now (--sep is live) and survive the flip. 915 additionally retargeted off strconv's PRIVATE left_shift_table (a let, not export) — which separate compilation correctly hides — onto a test-local package that exports its own probe table (#96). The combined path only linked it via a single-unit private leak; encapsulation is now honored under sep. Test-only; all 5 *_ww binaries HOLD. 989_m1mangle_run deferred (blocked by #99, imported-package fn main mangling under sep).
271 lines
8.4 KiB
C
271 lines
8.4 KiB
C
/*
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* 989_m1usehint_run — M1 (#40): the cgen mangle-hint must be MODULE-scoped,
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* not unit-global. When two directory-packages in the same compilation unit
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* export the same leaf fn (a.math and b.math both `export fn pick`), and two
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* referencing modules each `import <X>.math` aliasing `math`, every
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* `math.pick()` call must mangle to the package its OWN module imported —
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* not to whichever `use` the file-global hint collected first.
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*
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* Pre-#40 the hint (use_hint / usehint) was file-global first-match: both
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* modules' `math.pick()` resolved to the same package, so one call landed
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* the wrong body and returned the wrong value — IDENTICALLY on both stages
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* (a byte-id-green #263-class miscompile). Gate-visible: each module's call
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* has a distinct expected value, so a mis-route changes the runtime exit.
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*
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* row | proves
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* -----------------+--------------------------------------------------
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* leaf_collision | two same-leaf exported fns; each module's qualified
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* | call mangles to its OWN import (111 / 222) -> 0
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* collision_diff | same, with mismatched signatures — the checker's
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* | curmod-preferenced resolve agrees with the hint
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* | (pick(int) vs pick()) -> 0
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*
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* Plus a byte-id gate: cstage.s == wwstage.s on the leaf_collision unit
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* (rule-10).
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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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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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struct file { const char *path; const char *content; };
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struct row {
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const char *label;
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struct file files[6]; /* {NULL,NULL}-terminated package files */
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const char *root; /* root main.ww content */
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int want_exit;
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};
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static const struct row rows[] = {
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{ "leaf_collision",
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{ { "a/math/math.ww",
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"package math;\n"
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"export fn pick() int = { return 111; };\n" },
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{ "b/math/math.ww",
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"package math;\n"
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"export fn pick() int = { return 222; };\n" },
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{ "one/one.ww",
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"package one;\n"
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"import a.math;\n"
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"export fn getone() int = { return math.pick(); };\n" },
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{ "two/two.ww",
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"package two;\n"
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"import b.math;\n"
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"export fn gettwo() int = { return math.pick(); };\n" },
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{ NULL, NULL } },
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"package main;\n"
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"import one;\n"
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"import two;\n"
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"export fn main() int = {\n"
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" if (one.getone() != 111) { return 1; };\n"
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" if (two.gettwo() != 222) { return 2; };\n"
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" return 0;\n"
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"};\n",
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0 },
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{ "collision_diff",
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{ { "a/math/math.ww",
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"package math;\n"
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"export fn pick(x: int) int = { return x + 100; };\n" },
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{ "b/math/math.ww",
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"package math;\n"
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"export fn pick() int = { return 222; };\n" },
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{ "one/one.ww",
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"package one;\n"
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"import a.math;\n"
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"export fn getone() int = { return math.pick(11); };\n" },
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{ "two/two.ww",
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"package two;\n"
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"import b.math;\n"
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"export fn gettwo() int = { return math.pick(); };\n" },
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{ NULL, NULL } },
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"package main;\n"
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"import one;\n"
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"import two;\n"
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"export fn main() int = {\n"
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" if (one.getone() != 111) { return 1; };\n"
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" if (two.gettwo() != 222) { return 2; };\n"
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" return 0;\n"
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"};\n",
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0 },
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};
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/* write_file — create `dir/rel` (mkdir -p its parents) with `content`. */
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static int
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write_file(const char *dir, const char *rel, const char *content)
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{
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char path[512], cmd[1024];
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snprintf(path, sizeof path, "%s/%s", dir, rel);
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char parent[512];
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snprintf(parent, sizeof parent, "%s", path);
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char *slash = strrchr(parent, '/');
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if (slash) {
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*slash = '\0';
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snprintf(cmd, sizeof cmd, "mkdir -p '%s'", parent);
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if (runwait(cmd) != 0) return -1;
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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(content, f);
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fclose(f);
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return 0;
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}
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/* layout — lay out the row's package tree + root under `dir`. */
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static int
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layout(const char *dir, const struct row *r)
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{
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char cmd[1024];
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snprintf(cmd, sizeof cmd, "rm -rf '%s' && mkdir -p '%s'", dir, dir);
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if (runwait(cmd) != 0) return -1;
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for (int k = 0; r->files[k].path; k++)
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if (write_file(dir, r->files[k].path, r->files[k].content) != 0)
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return -1;
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return write_file(dir, "main.ww", r->root);
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}
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/* run_build — build+run the row's root via `driver`; return the binary's
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* exit code, or -1 on a build failure. */
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static int
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run_build(const char *driver, const struct row *r, int i)
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{
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char dir[64], cmd[2048];
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snprintf(dir, sizeof dir, "/tmp/m1usehint_%d_%d", getpid(), i);
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if (layout(dir, r) != 0) return -2;
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/* #93 sep layout: `--sep -o main` emits per-unit asm under
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* main.sepwork/ (each dir-pkg in its own <pkgpath>.s); binary stays
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* <dir>/main. WW_PKGCACHE pinned under <dir>; the whole tree is
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* rm -rf'd below, so the scratch dies with it. */
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snprintf(cmd, sizeof cmd,
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"cd '%s' && WW_PKGCACHE='%s/pkgc' %s build --sep -o main "
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"main.ww 2>/dev/null", dir, dir, driver);
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int brc = runwait(cmd);
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int got = -1;
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if (brc == 0) {
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char outbin[128];
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snprintf(outbin, sizeof outbin, "%s/main", dir);
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got = runwait(outbin);
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}
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snprintf(cmd, sizeof cmd, "rm -rf '%s'", dir);
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runwait(cmd);
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return brc == 0 ? got : -1;
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}
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/* byteid — build the leaf_collision unit with both drivers and cmp the
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* emitted combined .s (rule-10). Returns 0 on byte-identical, nonzero else. */
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static int
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byteid(const char *cdrv, const char *wdrv, const struct row *r)
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{
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char dir[64], cmd[2048];
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char cstem[80], wstem[80], cs[96], ws[96];
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snprintf(dir, sizeof dir, "/tmp/m1usehint_bid_%d", getpid());
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if (layout(dir, r) != 0) return -1;
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snprintf(cstem, sizeof cstem, "/tmp/m1usehint_c_%d", getpid());
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snprintf(wstem, sizeof wstem, "/tmp/m1usehint_w_%d", getpid());
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snprintf(cs, sizeof cs, "%s.s", cstem);
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snprintf(ws, sizeof ws, "%s.s", wstem);
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/* #93 sep layout: each stage emits per-unit asm under <stem>.sepwork/
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* (a.math.s, b.math.s, one.s, two.s, __root.s). The rule-10 byte-id
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* gate concats each tree's per-unit *.s (sorted glob order is
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* deterministic) into a flat <stem>.s and cmps the two. WW_PKGCACHE
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* is pinned per-stem so the shared out/.pkgcache stays untouched. */
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int rc = -1;
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snprintf(cmd, sizeof cmd,
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"cd '%s' && WW_PKGCACHE='%s.pkgc' %s build --sep -o '%s' "
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"main.ww 2>/dev/null && cat '%s.sepwork/'*.s > '%s'",
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dir, cstem, cdrv, cstem, cstem, cs);
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int cb = runwait(cmd);
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snprintf(cmd, sizeof cmd,
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"cd '%s' && WW_PKGCACHE='%s.pkgc' %s build --sep -o '%s' "
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"main.ww 2>/dev/null && cat '%s.sepwork/'*.s > '%s'",
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dir, wstem, wdrv, wstem, wstem, ws);
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int wb = runwait(cmd);
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if (cb == 0 && wb == 0) {
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snprintf(cmd, sizeof cmd, "cmp -s '%s' '%s'", cs, ws);
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rc = runwait(cmd);
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} else {
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fprintf(stderr, "m1usehint_run: byte-id build failed "
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"(cstage=%d wwstage=%d)\n", cb, wb);
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}
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snprintf(cmd, sizeof cmd, "rm -rf '%s' '%s'* '%s'*", dir, cstem, wstem);
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runwait(cmd);
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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[1024];
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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[1024], wdrv[1024];
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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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struct { const char *name; const char *drv; int gated; }
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drivers[] = {
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{ "cstage", cdrv, 0 },
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{ "wwstage", wdrv, 1 },
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{ NULL, NULL, 0 },
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};
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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 d = 0; drivers[d].name; d++) {
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if (drivers[d].gated && access(drivers[d].drv, X_OK) != 0) {
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fprintf(stderr, "m1usehint_run: skip %s (no %s)\n",
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drivers[d].name, drivers[d].drv);
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continue;
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}
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for (int i = 0; i < n; i++) {
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total++;
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int got = run_build(drivers[d].drv, &rows[i], i);
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if (got != rows[i].want_exit) {
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fprintf(stderr, "m1usehint_run[%s][%s]: exit=%d "
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"want=%d\n", drivers[d].name, rows[i].label,
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got, rows[i].want_exit);
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fail++;
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}
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}
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}
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/* rule-10 byte-id gate on the leaf_collision unit. */
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if (access(wdrv, X_OK) == 0) {
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total++;
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if (byteid(cdrv, wdrv, &rows[0]) != 0) {
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fprintf(stderr, "m1usehint_run: cstage.s != wwstage.s "
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"(byte-id break)\n");
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fail++;
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}
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}
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if (fail) {
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fprintf(stderr, "m1usehint_run: %d/%d failed\n", fail, total);
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return 1;
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}
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printf("m1usehint_run: %d/%d ok\n", total, total);
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return 0;
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}
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