1 /* Tries to map a zero-length file, which may or may not work but
2 should not terminate the process or crash.
3 Then dereferences the address that we tried to map,
4 and the process must be terminated with -1 exit code. */
8 #include "tests/main.h"
13 char *data = (char *) 0x7f000000;
16 CHECK (create ("empty", 0), "create empty file \"empty\"");
17 CHECK ((handle = open ("empty")) > 1, "open \"empty\"");
19 /* Calling mmap() might succeed or fail. We don't care. */
20 msg ("mmap \"empty\"");
23 /* Regardless of whether the call worked, *data should cause
24 the process to be terminated. */
25 fail ("unmapped memory is readable (%d)", *data);