Re: Cygwin and detail/limits.hpp

From: Daryle Walker (darylew_at_[hidden])
Date: 2001-05-24 16:16:28

on 5/24/01 11:58 AM, Ross Smith at ross.s_at_[hidden] wrote:

> Recent changes to Cygwin have created minor breakage in Boost's limits header.
> The code for wchar_t currently looks like this:
> 
> #ifndef _WIN32
> template<>
> class numeric_limits<wchar_t>
> : public _Integer_limits<wchar_t, INT_MIN, INT_MAX>
> {};
> #else
> class numeric_limits<wchar_t>
> : public _Integer_limits<wchar_t, 0, USHRT_MAX>
> {};
> #endif
> 
> Translation: assume equivalence to unsigned short on Windows, signed int on
> anything else. This falls down now because Cygwin's GCC defaults to -mno-win32
> mode, in which _WIN32 isn't defined but wchar_t is still 16 bits.
> 
> The fix should be trivial:
[SNIP proposed fix]

I think you're skipping something basic: there are limit macros for wchar_t!
The macros WCHAR_MIN and WCHAR_MAX are #defined in <cwchar> instead.

Furthermore, you should check the BOOST_NO_INTRINSIC_WCHAR_T macro in
<boost/config.hpp> to make sure this specialization should be done.

-- 
Daryle Walker
Mac, Internet, and Video Game Junkie
darylew AT mac DOT com