X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/b7580524f33ee21d3ddc49fe36a71e107e87df1b..8c685f4299a114153b85a424c1b3841513ff506d:/crc-mktab.c

diff --git a/crc-mktab.c b/crc-mktab.c
index 887315b..def5361 100644
--- a/crc-mktab.c
+++ b/crc-mktab.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: crc-mktab.c,v 1.1 2000/07/21 19:01:33 mdw Exp $
+ * $Id: crc-mktab.c,v 1.2 2000/10/08 11:07:21 mdw Exp $
  *
  * Build CRC tables
  *
@@ -30,6 +30,10 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: crc-mktab.c,v $
+ * Revision 1.2  2000/10/08 11:07:21  mdw
+ * With no arguments, give an error rather than spewing a big table at the
+ * user.
+ *
  * Revision 1.1  2000/07/21 19:01:33  mdw
  * Generate the CRC table rather than hardcoding it.
  *
@@ -231,11 +235,13 @@ int main(int argc, char *argv[])
 	  poly = 0x1021;
 	break;
       case 32:
-      case 0:
 	poly = 0x04c11db7;
 	flags |= f_reverse;
 	bits = 32;
 	break;
+      case 0:
+	die(EXIT_FAILURE, "no polynomial or bit width set");
+	break;
       default:
 	die(EXIT_FAILURE, "no standard polynomials for %u bits", bits);
 	break;