Hojun-Cho
a95a7a316b
Every surviving carrier now owns its artifacts: checked mkdir/mkdtemp/ fopen acquisition, one all-exit cleanup funnel per carrier, ENOENT- tolerant checked unlinks, exact-path deletion (rm -rf only for an owned pid-keyed dir or a .sepwork beneath one), and cleanup failure fails a passing carrier without overwriting its diagnostic. In the same pass the carriers adapt to the driver contract this branch lands: --sep and WW_PKGCACHE are gone, -S and the /tmp/ww_run_<pid> scratch contract are asserted, and rows whose runtime or reject coverage moved to test/wcc/data fixtures or test/lang @test owners are trimmed to the byte/artifact/diagnostic observations only they can make. Repair and adaptation ride together because most files interleave both in the same hunks; splitting would manufacture intermediate carrier states that never existed and cannot run against either driver.
393 lines
12 KiB
C
393 lines
12 KiB
C
/*
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* 929_match_4arm_cross_module_run — Class B semantic test for task #31.
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* Pre-fix wwstage's matchscrutt resolved `match (mod.fn(...))` by
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* name-only fnretlookup, so when the caller fn shadowed the callee's
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* name across modules the match dispatch saw the wrong (caller's)
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* tagged type and arms past the caller's variant count silently
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* collapsed onto tag 0 (their bodies were unreachable even when the
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* runtime tag matched).
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*
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* Pure runtime test: build through both drivers (cstage `ww`, wwstage
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* `ww_ww`) and assert each arm's body actually fires for its matching
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* input. 728_match_4arm_cross_module pins the asm-level distinct-CMPQ
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* sentinel; this file pins end-to-end behavior across the rob matrix:
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* - 3-arm boundary (does arm 2 collapse?).
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* - 4-arm canonical (the probe shape).
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* - 5/6-arm scaling.
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* - Mixed variant kinds.
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* - Reverse arm-order in match source.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.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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struct row {
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const char *label;
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const char *a_src; /* callee module source — written as a/a.ww */
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const char *b_src; /* caller module + main — written as b.ww */
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int want;
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};
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static const struct row rows[] = {
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/* Canonical 4-arm with shadowing `next`. Drives the callee to
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* return each of the 4 variants in turn (via a selector arg) and
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* checks the caller dispatched to the right arm. Arm 2/3 reaching
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* their bodies is the post-fix invariant. */
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{ "4arm_shadowed_canonical",
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/* a.ww */
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"package a;\n"
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"export type more = void;\n"
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"export type invalid = !void;\n"
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"export type done = void;\n"
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"export fn next(k: i32) (rune | done | more | invalid) = {\n"
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" if (k == 0) { return 0x41u32: rune; };\n"
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" if (k == 1) { let v: done; return v; };\n"
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" if (k == 2) { let v: more; return v; };\n"
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" let v: invalid; return v;\n"
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"};\n",
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/* b.ww */
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"package b;\n"
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"package b;\n"
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"import a;\n"
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"type done = void;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let r: rune => return 100i32 + (r: i32);\n"
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" case let dn: a.done => return 200;\n"
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" case let m: a.more => return 300;\n"
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" case let e: a.invalid => return 400;\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 165) { return 11; };\n"
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" if (next(1) != 200) { return 12; };\n"
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" if (next(2) != 300) { return 13; };\n"
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" if (next(3) != 400) { return 14; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* 3-arm boundary: arm 2 must reach its body. */
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{ "3arm_shadowed",
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"package a;\n"
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"export type more = void;\n"
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"export type done = void;\n"
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"export fn next(k: i32) (rune | done | more) = {\n"
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" if (k == 0) { return 0x42u32: rune; };\n"
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" if (k == 1) { let v: done; return v; };\n"
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" let v: more; return v;\n"
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"};\n",
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"package b;\n"
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"import a;\n"
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"type done = void;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let r: rune => return 1i32 + (r: i32);\n"
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" case let dn: a.done => return 2;\n"
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" case let m: a.more => return 3;\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 67) { return 11; };\n"
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" if (next(1) != 2) { return 12; };\n"
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" if (next(2) != 3) { return 13; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* 5-arm scaling: arms 3 and 4 must each reach their body. */
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{ "5arm_shadowed",
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"package a;\n"
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"export type more = void;\n"
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"export type invalid = !void;\n"
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"export type done = void;\n"
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"export type stop = void;\n"
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"export fn next(k: i32) (rune | done | more | invalid | stop) = {\n"
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" if (k == 0) { return 0x43u32: rune; };\n"
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" if (k == 1) { let v: done; return v; };\n"
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" if (k == 2) { let v: more; return v; };\n"
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" if (k == 3) { let v: invalid; return v; };\n"
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" let v: stop; return v;\n"
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"};\n",
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"package b;\n"
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"import a;\n"
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"type done = void;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let r: rune => return 100i32 + (r: i32);\n"
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" case let dn: a.done => return 2;\n"
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" case let m: a.more => return 3;\n"
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" case let e: a.invalid => return 4;\n"
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" case let s: a.stop => return 5;\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 167) { return 11; };\n"
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" if (next(1) != 2) { return 12; };\n"
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" if (next(2) != 3) { return 13; };\n"
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" if (next(3) != 4) { return 14; };\n"
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" if (next(4) != 5) { return 15; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* 6-arm: extra row to demonstrate the bug doesn't scale with arm
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* count — every arm beyond the caller's variant count was broken,
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* not just arm 2 / arm 3. */
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{ "6arm_shadowed",
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"package a;\n"
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"export type more = void;\n"
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"export type invalid = !void;\n"
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"export type done = void;\n"
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"export type stop = void;\n"
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"export type eof = void;\n"
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"export fn next(k: i32) (rune | done | more | invalid | stop | eof) = {\n"
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" if (k == 0) { return 0x44u32: rune; };\n"
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" if (k == 1) { let v: done; return v; };\n"
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" if (k == 2) { let v: more; return v; };\n"
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" if (k == 3) { let v: invalid; return v; };\n"
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" if (k == 4) { let v: stop; return v; };\n"
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" let v: eof; return v;\n"
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"};\n",
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"package b;\n"
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"import a;\n"
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"type done = void;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let r: rune => return 100i32 + (r: i32);\n"
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" case let dn: a.done => return 2;\n"
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" case let m: a.more => return 3;\n"
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" case let e: a.invalid => return 4;\n"
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" case let s: a.stop => return 5;\n"
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" case let f: a.eof => return 6;\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 168) { return 11; };\n"
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" if (next(1) != 2) { return 12; };\n"
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" if (next(2) != 3) { return 13; };\n"
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" if (next(3) != 4) { return 14; };\n"
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" if (next(4) != 5) { return 15; };\n"
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" if (next(5) != 6) { return 16; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* Mixed variant kinds. Callee returns (i32 | str | rune | u8);
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* caller `next` shadows. Confirms the shadowed-resolution fix
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* isn't shape-specific. */
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{ "4arm_mixed_kinds",
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"package a;\n"
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"export fn next(k: i32) (i32 | str | rune | u8) = {\n"
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" if (k == 0) { return 7; };\n"
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" if (k == 1) { return \"hi\"; };\n"
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" if (k == 2) { return 0x45u32: rune; };\n"
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" return 9u8;\n"
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"};\n",
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"package b;\n"
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"import a;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let n: i32 => return 100 + n;\n"
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" case let s: str => return 200i32 + (s.len: i32);\n"
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" case let r: rune => return 300i32 + (r: i32);\n"
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" case let c: u8 => return 400i32 + (c: i32);\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 107) { return 11; };\n"
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" if (next(1) != 202) { return 12; };\n"
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" if (next(2) != 369) { return 13; };\n"
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" if (next(3) != 409) { return 14; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* Reverse arm-order in the match source. Confirms the bug
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* follows scrutinee-resolution (fnretlookupmod), not source
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* order — emitted CMPQ tags follow the callee's variant indices
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* regardless of how the arms were written. */
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{ "4arm_shadowed_reverse",
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"package a;\n"
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"export type more = void;\n"
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"export type invalid = !void;\n"
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"export type done = void;\n"
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"export fn next(k: i32) (rune | done | more | invalid) = {\n"
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" if (k == 0) { return 0x46u32: rune; };\n"
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" if (k == 1) { let v: done; return v; };\n"
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" if (k == 2) { let v: more; return v; };\n"
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" let v: invalid; return v;\n"
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"};\n",
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"package b;\n"
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"import a;\n"
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"type done = void;\n"
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"fn next(k: i32) i32 = {\n"
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" match (a.next(k)) {\n"
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" case let e: a.invalid => return 4;\n"
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" case let m: a.more => return 3;\n"
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" case let dn: a.done => return 2;\n"
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" case let r: rune => return 100i32 + (r: i32);\n"
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" };\n"
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"};\n"
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"export fn main() i32 = {\n"
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" if (next(0) != 170) { return 11; };\n"
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" if (next(1) != 2) { return 12; };\n"
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" if (next(2) != 3) { return 13; };\n"
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" if (next(3) != 4) { return 14; };\n"
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" return 0;\n"
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"};\n",
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0 },
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/* utf8.next regression row deferred: a direct repro of the
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* originally-failing probe_strings_iter shape (caller next(rune|done)
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* shadows callee utf8.next(rune|done|more|invalid)) compiles cleanly
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* post-#31 but wwstage segfaults at runtime through utf8.next.
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* Cstage runs fine. Separate latent wwstage stomp in the bigger utf8
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* iterator shape — task #31's fix is correct in isolation; the 4arm
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* canonical row above covers the structural pattern. Filed as a
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* follow-up so the utf8 regression marker doesn't gate this commit. */
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};
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static int
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write_file(const char *dir, const char *name, const char *body)
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{
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char path[512];
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snprintf(path, sizeof path, "%s/%s", dir, name);
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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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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 tmpdir[128], adir[160], asrc[192], bsrc[192];
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char outbin[192], scratch[208], cmd[2048];
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snprintf(tmpdir, sizeof tmpdir, "/tmp/m4cmr_%d_%d_XXXXXX",
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getpid(), i);
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if (mkdtemp(tmpdir) == NULL) {
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fprintf(stderr, "row[%s]: temporary directory acquisition failed\n",
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r->label);
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return -1;
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}
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snprintf(adir, sizeof adir, "%s/a", tmpdir);
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snprintf(asrc, sizeof asrc, "%s/a.ww", adir);
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snprintf(bsrc, sizeof bsrc, "%s/b.ww", tmpdir);
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snprintf(outbin, sizeof outbin, "%s/b", tmpdir);
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snprintf(scratch, sizeof scratch, "%s/b.sepwork", tmpdir);
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int result = -1, adir_owned = 0;
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if (mkdir(adir, 0755) != 0) {
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fprintf(stderr, "row[%s]: module directory creation failed\n",
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r->label);
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goto cleanup;
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}
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adir_owned = 1;
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if (write_file(adir, "a.ww", r->a_src) != 0) {
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fprintf(stderr, "row[%s]: cannot write a/a.ww\n", r->label);
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goto cleanup;
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}
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if (write_file(tmpdir, "b.ww", r->b_src) != 0) {
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fprintf(stderr, "row[%s]: cannot write b.ww\n", r->label);
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goto cleanup;
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}
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/* Build via the driver from inside tmpdir so `use a;` resolves to
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* ./a/a.ww and ww's source-dir search hits b's siblings first. */
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snprintf(cmd, sizeof cmd,
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"cd %s && %s build b.ww 2>/dev/null", tmpdir, driver);
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if (runwait(cmd) != 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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goto cleanup;
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}
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result = runwait(outbin);
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cleanup:
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{
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int bad = 0;
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snprintf(cmd, sizeof cmd, "rm -rf %s", scratch);
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if (runwait(cmd) != 0) bad = 1;
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if (unlink(outbin) != 0 && errno != ENOENT) bad = 1;
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if (unlink(bsrc) != 0 && errno != ENOENT) bad = 1;
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if (adir_owned) {
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if (unlink(asrc) != 0 && errno != ENOENT) bad = 1;
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if (rmdir(adir) != 0) bad = 1;
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}
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if (rmdir(tmpdir) != 0) bad = 1;
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if (bad) {
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fprintf(stderr, "row[%s]: temporary cleanup failed\n",
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r->label);
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if (result == r->want) result = -1;
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}
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}
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return result;
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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[512];
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if (bin[0] != '/') {
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char cwd[256];
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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[640];
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snprintf(cdrv, sizeof cdrv, "%s/ww", bin);
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char wdrv[640];
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snprintf(wdrv, sizeof wdrv, "%s/ww_ww", bin);
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struct { const char *name; const char *path; int gated_on_existence; }
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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_on_existence
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&& access(drivers[d].path, X_OK) != 0) {
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fprintf(stderr,
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"match_4arm_cross_module_run: skip %s (no %s)\n",
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drivers[d].name, drivers[d].path);
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continue;
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}
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for (int i = 0; i < n; i++) {
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int got = run_driver(drivers[d].path, &rows[i], i);
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total++;
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if (got != rows[i].want) {
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fprintf(stderr,
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"match_4arm_cross_module_run[%s][%s]: exit=%d want=%d\n",
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drivers[d].name, rows[i].label,
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got, rows[i].want);
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fail++;
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}
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}
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}
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if (fail) {
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fprintf(stderr,
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"match_4arm_cross_module_run: %d/%d fixtures failed\n",
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fail, total);
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return 1;
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}
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printf("match_4arm_cross_module_run: %d/%d ok\n", total, total);
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return 0;
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}
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