Re: exception objects to be destroyed twice
On 6 Nov, 02:51, zade <zhaohongc...@gmail.com> wrote:
In David Abrahams article <<Error and Exception Handling>>http://accu.org/index.php/journals/332, it says : "Unfortunately,
several popular compilers occasionally cause exception objects to be
destroyed twice."
So, I want to know why destroy twice and which compilers do like this ?
"why destroy twice"? Because of compiler bugs, that's why! This is an
error, compilers should not do this. But they do. I worked on a
project where I got bitten by this using Sun's Studio8 compiler. I
created a ostringstream object in a catch clause and found it got
destructed twice. To fix it I moved it to before the try, then it
worked. This sort of bug does not happen very often. Most of the time
creating objects in the catch clause was ok but it is something to be
aware of.
Regards,
Andrew Marlow
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