+ r = waitpid(pid,wstat,0);
+ while ((r == -1) && (errno == error_intr));
+ return r;
+}
+
+#else
+
+/* XXX untested */
+/* XXX breaks down with more than two children */
+static int oldpid = 0;
+static int oldwstat; /* defined if(oldpid) */
+
+int wait_pid(wstat,pid) int *wstat; int pid;
+{
+ int r;
+
+ if (pid == oldpid) { *wstat = oldwstat; oldpid = 0; return pid; }
+
+ do {