another strange endless loop failure

[r21814]

ir/be/test/fehler152.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+
+int x = 2;
+int test(void) {
+
+	x = 3;
+
+	for(;;);
+}
+
+void handler(int sig)
+{
+	printf(x == 3 ? "ok\n" : "fail");
+	fflush(stdout);
+	exit(x == 3);
+}
+
+int main(int argc, char *argv[]) {
+	alarm(1);
+	signal(SIGALRM, handler);
+	test();
+	printf("FAIL ENDLESS LOOP\n");
+	return 1;
+}