--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testzero.c	Wed Jan 29 10:50:34 2025 +0000
@@ -0,0 +1,35 @@
+#include "uint32.h"
+#include "scan.h"
+#include "strerr.h"
+#include "cdb_make.h"
+
+#define FATAL "testzero: fatal: "
+
+void die_write(void)
+{
+  strerr_die2sys(111,FATAL,"unable to write: ");
+}
+
+static char key[4];
+static char data[65536];
+struct cdb_make c;
+
+main(int argc,char **argv)
+{
+  int fd;
+  unsigned long loop;
+
+  if (!*argv) _exit(0);
+  if (!*++argv) _exit(0);
+  scan_ulong(*argv,&loop);
+
+  if (cdb_make_start(&c,1) == -1) die_write();
+
+  while (loop) {
+    uint32_pack(key,--loop);
+    if (cdb_make_add(&c,key,4,data,sizeof data) == -1) die_write();
+  }
+
+  if (cdb_make_finish(&c) == -1) die_write();
+  _exit(0);
+}