testlib does NOT give the same output on different platforms

[Golovanov399]

testlib/testlib.h

Lines 673 to 684 in d2880ce

	long next(long n)
	{
	return (long)next((long long)(n));
	}
	/* Random value in range [0, n-1]. */
	unsigned long next(unsigned long n)
	{
	if (n >= (unsigned long)(LONG_MAX))
	__testlib_fail("random_t::next(unsigned long n): n must be less LONG_MAX");
	return (unsigned long)next((unsigned long long)(n));
	}

long is a different type on 32-bit and 64-bit platforms (as well as unsigned long). The problem can occur when using rnd.any(...) since it basically calls next(container.size()).

[Golovanov399]

@MikeMirzayanov bump

[HamzaZagha]

Until this is fixed, a workaround is to compile your code for 32bit architecture on both platforms.
For g++ on 64bit systems, this is done using the -m32 flag (you might need to install some libraries though, for me I had to install g++-multilib on linux).

[stgatilov]

The best fix would be to add methods nextInt, nextLong, nextDouble, etc, and mark the damn template next as deprecated to discourage its use.