First cut, some hacks, three simple modules.

[ccan] / check_type / test / compile_fail-check_type_unsigned.c

#include "check_type/check_type.h"

int main(int argc, char *argv[])
{
#ifdef FAIL
#if HAVE_TYPEOF
        check_type(argc, unsigned int);
#else
        /* This doesn't work without typeof, so just fail */
#error "Fail without typeof"
#endif
#endif
        return 0;
}