[Development] BUG: QTextEdit drop file error in qt5.4.0 beta for mingw

[kl222]

Environment: 

qt5.4.0 beta for mingw (qt-opensource-windows-x86-android-5.4.0-beta)

windows 7 Ultimate

 

Drag the file to the error in QtextEdit. The program is core, and the
following error occurred:

ASSERT failure in QVector<T>::operator[]: "index out of range", file
..\..\include/QtCore/../../src/corelib/tools/qvector.h, line 396

Invalid parameter passed to C runtime function.

Invalid parameter passed to C runtime function.

 

Test program in the Annex.

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