--- ray/src/util/rpiece.c	1993/10/19 16:02:39	2.28
+++ ray/src/util/rpiece.c	1994/04/11 14:44:10	2.30
@@ -233,7 +233,8 @@ char  **av;
 		dolock(outfd, F_WRLCK);
 		if ((fp = fdopen(dup(outfd), "w")) == NULL)
 			goto filerr;
-		printargs(ac, av, fp);		/* write header */
+		newheader("RADIANCE", fp);	/* create header */
+		printargs(ac, av, fp);
 		fprintf(fp, "SOFTWARE= %s\n", VersionID);
 		fputs(VIEWSTR, fp);
 		fprintview(&ourview, fp);
@@ -344,6 +345,10 @@ register int  *xp, *yp;
 		return(0);		/* only check if asked */
 	if (pdone == NULL)		/* first call */
 		pdone = calloc(hmult*vmult, sizeof(char));
+	if (pdone == NULL) {
+		fprintf(stderr, "%s: out of memory\n", progname);
+		exit(1);
+	}
 	if (readpos != -1)		/* mark what's been done */
 		fseek(syncfp, readpos, 0);
 	while (fscanf(syncfp, "%d %d", xp, yp) == 2)