Re: [boost] Exceptions as streams

From: Geoff Leyland (gley001_at_[hidden])
Date: 2004-02-10 15:36:50

On 11/02/2004, at 4:48 AM, Victor A. Wagner, Jr. wrote:

> At Tuesday 2004-02-10 00:01, you wrote:
>>
>> Funny that gcc's runtime_error uses a string copy constructor that 
>> could potentially throw :-)
>
> what exception do you see it throwing (possibly) ?

Well, I thought it might throw a bad_alloc and, as Jonathan said :

> Have you seen
>
>     http://www.boost.org/more/error_handling.html
>
> particularly item 4 ("Format the what() message o demand"), but also 3
> and 5?

  See item 3.  However, Jonathan also cleared up the bad_alloc:

> ...I haven't studied
> the libstdc++ string class in detail, but I think it's a reference
> counted string whose copy constructor shouldn't throw in the
> circumstances we've discussed. Other libraries (Dinkumware, I think)
> definitely have this problem.

I haven't looked past the stdexcept header in gcc, but at a brief 
glance it seems to me that MSL's runtime_exception could throw a 
bad_alloc.

cheers,
Geoff