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From: Paul A Bristow (pbristow_at_[hidden])
Date: 2007-05-07 10:41:57


>-----Original Message-----
>From: boost-bounces_at_[hidden]
>[mailto:boost-bounces_at_[hidden]] On Behalf Of Sebastian Redl
>Sent: 07 May 2007 15:32
>To: boost_at_[hidden]
>Subject: Re: [boost] [HEAD] lexical_cast<int8_t>("127") bug?
>Paul A Bristow wrote:
>> I also recollect that I never understood why
>> zz = lexical_cast<int>("0xffff"); // Fails!
>> However I was more concerned about the floating-point
>problems, now sorted out,
>> and I didn't waste any brain activity on it.
>That's because all lexical cast does is create a string stream and use
>the extractor to get the value out. The int extractor doesn't
>parse code
>style integers. It just looks at the base flag (oct, dec or hex) and
>expects the number to be in this format.

Obvious, now you point it out - but I don't recollect this being documented.

I'm sure I'll not be the last unthinking user to fall into this pit ;-)


Paul A Bristow
Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB
+44 1539561830 & SMS, Mobile +44 7714 330204 & SMS

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