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author | Marc Mutz <marc.mutz@kdab.com> | 2012-07-25 09:08:33 +0200 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2012-12-11 11:12:08 +0100 |
commit | 98b77f9faa14822479deb20cd6fe0ce4fe9b56da (patch) | |
tree | 8f1df1dea05ec907eb7ce86dd42e574ff5b724d9 /tests/auto/other | |
parent | 90c3340356e641958528007e838eab981f090fdf (diff) |
QMetaType: remember whether a type was registered with Q_DECLARE_METATYPE
There are two ways to register a type: using Q_DECLARE_METATYPE(T) and
using qRegisterMetaType<T>("T"). Doing one thing in one translation
unit and another thing in another TU constitutes an ODR violation,
because the value of QMetaTypeId<T>::Defined will differ in the two
TUs.
By adding the information whether a type was declared with
Q_DECLARE_METATYPE to the typeFlags(), such a use will trigger
the existing binary-incompatibility failure that checks for
equality of the incoming type flags with the stored ones (if any).
I had to encode the type as a defaulted function argument in order
to avoid the linker merging instantiations of the function templates
and therefore rendering the detection moot.
Change-Id: I82017caf300458b411cc8ac2f6653536fac64117
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'tests/auto/other')
0 files changed, 0 insertions, 0 deletions