[Qt-qml] QT_TRAP_THROWING warning

[shane.kearns at accenture.com]

Hi Pekka,

It's caused by Symbian being compiled with different compiler/linker options to Qt for Symbian, and is safe to ignore.
You can load features/symbian/armcc_warnings.prf to hide this warning (but note it also hides some warnings that are useful in general but have too many false positives in the Qt code base)

Specifically:
Qt declares DLL exports per class, but Symbian declares DLL exports on individual class member functions.
Symbian uses a compiler option to force vtable and typeinfo to be exported for all classes, while with Qt, only classes which are exported will  have their vtable and typeinfo exported too.
This causes a conflict when Qt code is using symbian headers - the Qt code thinks the class typeinfo isn't visible (STV_HIDDEN), while the import library being linked against says that it is.

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From: qt-qml-bounces+shane.kearns=accenture.com at qt.nokia.com [mailto:qt-qml-bounces+shane.kearns=accenture.com at qt.nokia.com] On Behalf Of Pekka.E.Jokela at nokia.com
Sent: Tuesday, May 03, 2011 06:46
To: qt-qml at qt.nokia.com
Subject: [Qt-qml] QT_TRAP_THROWING warning

Hi,
I'm trying to use the macro, but I get a warning:
Warning: L6780W: STV_HIDDEN visibility removed from symbol 'typeinfo for XLeaveException' through IMPORT.

Any ideas what causes this?

Thanks,
-Pekka



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