[Bug libstdc++/102259] ifstream::read(…, count) fails when count >= 2^31 on darwin

[mimomorin at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102259

--- Comment #2 from Michel Morin <mimomorin at gmail dot com> ---
Whoa, darwin's (and FreeBSD's too?) `read(…, …, nbyte)` fails when nbyte >=
2^31! This is the culprit, I think. 

I also found the following description in FreeBSD's manpage of read
(https://www.unix.com/man-page/FreeBSD/2/read/):

    ERRORS
    [EINVAL] The value nbytes is greater than INT_MAX.

Given that the testcase works file when compiled with Clang, libcxx would have
some workround for it.