19 lines
404 B
C
19 lines
404 B
C
#define __NO_STRING_INLINES
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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int
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main (void)
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{
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char *p1;
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int ps = getpagesize ();
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p1 = mmap (0, ps * 2, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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mprotect (p1 + ps, ps, PROT_NONE);
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p1 += ps - 10;
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strcpy (p1, "123456789");
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return (strncmp (p1, "1234567890", 11) == 0
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|| strncmp ("1234567890", p1, 11) == 0);
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}
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