wireshark/cmake/TestFileOffsetBits.c

25 lines
693 B
C

/*
* This code was copied from http://www.gromacs.org/
* and its toplevel COPYING file starts with:
*
* GROMACS is free software, distributed under the GNU General Public License
* (GPL) Version 2.
*/
#include <sys/types.h>
/* detect failure even with -Wno-error on command line */
#pragma GCC diagnostic error "-Werror"
int main(int argc, char **argv)
{
/* Cause a compile-time error if off_t is smaller than 64 bits */
#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
int off_t_is_large[ (LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1 ];
/* silence unused errors */
(void)off_t_is_large;
(void)argc;
(void)argv;
return 0;
}