[Development] Choosing a new MinGW for Qt 5

[Peter Kümmel]

On 01.09.2012 12:39, Thiago Macieira wrote:
> On sábado, 1 de setembro de 2012 12.23.31, Peter Kümmel wrote:
>>       "As a general rule, you should choose the default SJLJ packages,
>>        unless you know you need faster exception handling and can guarantee
>>        you'll never need to unwind through non-DW2-compiled stack frames
>>        (such as a Windows callback)"
>>       Using SJLJ "can work across code that has not been compiled with
>>       GCC or that does not have call-stack unwinding information."
>
> We don't need that.
>
> Unwinding the stack through C functions and code that isn't exception-safe in
> the first place is stupid. The only sane outcome of doing that is a crash.
>
> What's more, all Qt libraries aside from QtCore and QtXmlPatterns are built
> with exceptions disabled. That means that if your code leaks an exception
> through a GUI event loop or a signal from one of those classes, the
> application will crash.
>
> So we don't need SJLJ.
>

So you think it is possible to use DW2 for 32 bit binaries?

What happens if a binary compiled with GCC/DW2 calls a
C++ function in a Dll compiled with MSVC and this function
throws an exception?

>
>
> _______________________________________________
> Development mailing list
> Development at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/development
>