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#include "config.h"
#include <stdio.h>
#include <string.h>
/**
* alignof - ALIGNOF() macro to determine alignment of a type.
*
* Many platforms have requirements that certain types must be aligned
* to certain address boundaries, such as ints needing to be on 4-byte
* boundaries. Attempting to access variables with incorrect
* alignment may cause performance loss or even program failure (eg. a
* bus signal).
*
* There are times which it's useful to be able to programatically
* access these requirements, such as for dynamic allocators.
*
* Example:
* #include <stdio.h>
* #include <stdlib.h>
* #include <ccan/alignof/alignof.h>
*
* // Output contains "ALIGNOF(char) == 1"
* // Will also print out whether an onstack char array can hold a long.
* int main(int argc, char *argv[])
* {
* char arr[sizeof(int)];
*
* printf("ALIGNOF(char) == %zu\n", ALIGNOF(char));
* if ((unsigned long)arr % ALIGNOF(int)) {
* printf("arr %p CANNOT hold an int\n", arr);
* exit(1);
* } else {
* printf("arr %p CAN hold an int\n", arr);
* exit(0);
* }
* }
*
* License: CC0 (Public domain)
* Author: Rusty Russell <rusty@rustcorp.com.au>
*/
int main(int argc, char *argv[])
{
if (argc != 2)
return 1;
if (strcmp(argv[1], "depends") == 0) {
return 0;
}
return 1;
}
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