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#include <execinfo.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
static int
compare (const void *p1, const void *p2)
{
void *ba[20];
int n = backtrace (ba, sizeof (ba) / sizeof (ba[0]));
if (n != 0)
{
char **names = backtrace_symbols (ba, n);
if (names != NULL)
{
int i;
printf ("called from %s\n", names[0]);
for (i = 1; i < n; ++i)
printf (" %s\n", names[i]);
free (names);
}
}
return *(const uint32_t *) p1 - *(const uint32_t *) p2;
}
int
main (int argc, char *argv[])
{
uint32_t arr[20];
size_t cnt;
for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
arr[cnt] = random ();
qsort (arr, sizeof (arr) / sizeof (arr[0]), sizeof (arr[0]), compare);
for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
printf ("%" PRIx32 "\n", arr[cnt]);
return 0;
}
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