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use strict;
use warnings;
...
Unexpectedly got 3013470 at 3 instead of 1354771
Warning: special data without datasv is not freed currently!!.
Warning: special data without datasv is not freed currently!!.

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  fd = open(argv[1], O_RDONLY);
  if (fd < 0) {
...

  printf("Did the contents of the second mmap overwrite?\n");
  testMap(mapstart2);