/*
 * 944_alias_cgen_b5_run — SLIM CARRIER (#5-C3 alias fold-2). The 27 K_RUN value
 * rows migrated to test/lang/alias_cgen_b5_test.ww (@test, cs==ww byte-id); the
 * symmetric K_BUILDERR rejects (fill0_ctl, fill2_loud, g73_static_str) to
 * test/wcc/data/alias_{fill0_ctl,fill2_loud,g73_static_str}/case.ww runww.
 *
 * What survives here is the one IRREDUCIBLE K_COMPILES row: both stages
 * FRONTEND-compile (w6c / w6c_ww → .s, rc 0) but the asm diverges (the ww
 * deref-field READ carries the #24 field(SB) leak) so run + byte-id cells are
 * unavailable, and a full `ww build` can't link this self-contained `alloc()`
 * case (no rt malloc) — runww //ww:compile links and so cannot host it. The
 * pin is the ABSENCE of the pre-c2 cstage #73 fatal at the heap struct-lit
 * str-arm fill; the ww-side leak rides task #24. Compile-smoke only.
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/wait.h>

static int
runwait(const char *cmd)
{
	int rc = system(cmd);
	if (rc == -1) return -1;
	if (WIFEXITED(rc)) return WEXITSTATUS(rc);
	return -1;
}

/* both w6c and w6c_ww must FRONTEND-compile (rc 0); no run, no byte-id (#24). */
static int
run_row(const char *bin, const char *label, const char *src, int i)
{
	char dir[96], srcf[160], ss[160], rm[200], cmd[2048];
	snprintf(dir, sizeof dir, "/tmp/ab5_%d_%d", getpid(), i);
	mkdir(dir, 0755);
	snprintf(srcf, sizeof srcf, "%s/c.ww", dir);
	snprintf(ss, sizeof ss, "%s/o.s", dir);
	snprintf(rm, sizeof rm, "rm -rf %s", dir);

	FILE *f = fopen(srcf, "wb");
	if (!f) { runwait(rm); return -1; }
	fputs(src, f);
	fclose(f);

	int ok = 1;
	snprintf(cmd, sizeof cmd, "%s/w6c -o %s %s 2>/dev/null", bin, ss, srcf);
	if (runwait(cmd) != 0) {
		fprintf(stderr, "row[%s]: cstage frontend compile failed\n", label);
		ok = 0;
	}
	snprintf(cmd, sizeof cmd, "%s/w6c_ww -o %s %s 2>/dev/null", bin, ss, srcf);
	if (runwait(cmd) != 0) {
		fprintf(stderr, "row[%s]: wwstage frontend compile failed\n", label);
		ok = 0;
	}
	runwait(rm);
	return ok ? 0 : 1;
}

struct row { const char *label; const char *src; };

static const struct row rows[] = {
	{ "g73_heapfill",
	  "package main;\n"
	  "type s1t = str;\n"
	  "type s2t = s1t;\n"
	  "type box = struct { s: s2t, n: int };\n"
	  "export fn main() i32 = {\n"
	  "	let p = alloc(box { s = \"hello\", n = 5 })!;\n"
	  "	if (p.n != 5) { return 1; };\n"
	  "	if (p.s.len != 5) { return 2; };\n"
	  "	return 0;\n"
	  "};\n" },
};

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;
	}

	int n = (int)(sizeof rows / sizeof rows[0]);
	int fail = 0;
	for (int i = 0; i < n; i++)
		if (run_row(bin, rows[i].label, rows[i].src, i) != 0) fail++;

	if (fail) {
		fprintf(stderr, "alias_cgen_b5 (slim): %d/%d rows failed\n", fail, n);
		return 1;
	}
	printf("alias_cgen_b5 (slim): %d/%d ok\n", n, n);
	return 0;
}