From: Thomas Chust <chust@...>
Date: 2009-08-07T19:48:01+09:00
Subject: Re: FFI, sysctl, pointer question

2009/8/7 Andrea Fazzi <andrea.fazzi@alcacoop.it>:
>  [...]
>  tv_size_ptr = FFI::MemoryPointer.new(:int).write_int(tv.size)
>  [...]

Hello,

size_t in ANSI C is required to be unsigned and is usually defined as
unsigned long. Therefore the above code is always wrong in that it
stores a signed integer, and it is likely wrong on some 64 bit systems
where an int is 32 bits wide but a long is 64 bits wide.

cu,
Thomas


-- 
When C++ is your hammer, every problem looks like your thumb.