Re: [boost] [String Algo] error in ireplace_first or ireplace_all with std::wstring under gcc 3.4.2 (MingW)

Subject: Re: [boost] [String Algo] error in ireplace_first or ireplace_all with std::wstring under gcc 3.4.2 (MingW)
From: Brian Ravnsgaard Riis (brian_at_[hidden])
Date: 2010-01-20 16:54:56

On 20-01-2010 18:41, Doug Swanson wrote:
> Thank you so much for your reply!  I really appreciate it.
> 
> Although I remember reading about this issue at some point in the past,
> I have used std::wstring under MingW-gcc for quite some time now with no
> problems.  If it were really 100% incompatible I would wish it would
> give a compilation error!  I wonder why it crashes under the 'ireplace'
> algorithms but not the 'replace' ones -- especially since I remain
> strictly within Unicode Plane 0 (basic 2-byte characters in UTF-16/UCS-2
> which fit in a single wchar_t on Windows).
> 
> In any event, if you have any further insight here I would be interested
> to hear it, but I suppose I will just have to change compilers.  Thanks
> again!
> 

[snip]

>> As far as I know, that answer is quite simple. Unless something have
>> changed recently, mingw does not support unicode strings. I would
>> suggest to swith to non-mingw version of gcc.

How goes the difference between replace and ireplace? IIUC MinGW itself
is as fully wide-aware as any other gcc, it's libstdc++ which is not
under MinGW. Using MinGW with another standard library (STLPort for
instance) should make your problems go away.

However, since only one of the two algorithms fail, I wonder at their
implementation. Does ireplace use some part of the standard library that
replace does not?

 /Brian