I just ran into a bug which crashes slonik when it is passed a file
which doesn't exist.  It looks like it was fixed on HEAD as part of
revision 1.43 on src/slonik/slonik.c.  There are other changes in that
revision so I have extracted the relevant patch and appended it.  It
looks like it could be applied separately.

 - Ian

--- src/slonik/slonik.c 25 May 2005 16:16:02 -0000      1.42
+++ src/slonik/slonik.c 29 Jun 2005 01:48:15 -0000      1.43
@@ -101,6 +200,11 @@
                        FILE       *fp;

                        fp = fopen(argv[optind], "r");
+                       if (fp == NULL)
+                       {
+                               printf("could not open file '%s'\n",
argv[optind]);
+                               return -1;
+                       }
                        scan_new_input_file(fp);
                        current_file = (char *)argv[optind++];
                        yylineno = 1;