/*
 * 989_letshadow_run — #152 regression pin. Compile + run the letshadow
 * fixture under the C-side `ww run` driver (cstage w6c) and assert exit 0.
 *
 * The bug (link-the-let-before-its-init) miscompiled IDENTICALLY on both
 * stages, so byte-id 990-997 is blind to it; only a runtime value check
 * catches the regression. Same thin-wrapper shape as 989_path_run.
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.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;
}

int
main(void)
{
	const char *bin = getenv("BIN");
	if (!bin) bin = "out/bin";
	char absbin[1024];
	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 cwd[1024];
	if (getcwd(cwd, sizeof cwd) == NULL) return 1;

	const char *src = "test/wcc/989_letshadow.ww";
	char path[1024], cmd[2048];
	snprintf(path, sizeof path, "%s/%s", cwd, src);
	snprintf(cmd, sizeof cmd, "%s/ww run %s", bin, path);
	int rc = runwait(cmd);
	if (rc != 0) {
		fprintf(stderr, "letshadow_run FAIL: %s exited %d "
		    "(row %d miscompiled — #152)\n", src, rc, rc - 10);
		return 1;
	}
	printf("letshadow_run: %s ok\n", src);
	return 0;
}