Fixed a buffer overrun when pasting large data from non-Qt apps

When we receive a COMPOUND_TEXT data and convert it to multi-byte, if
the new length is less than the original buffer, we resize the buffer,
but then we need to make sure we reset the buffer_offset variable,
which is returned as a "size" of the buffer to a caller.

The conversion to COMPOUND_TEXT format was totally wrong, we were using
the wrong length of the input text, so the converted string was
truncated.

Task-number: QTBUG-8644
Reviewed-by: Bradley T. Hughes

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gui/kernel/qt_x11_p.h b/src/gui/kernel/qt_x11_p.h
index 7383382..d62d9c3 100644
--- a/src/gui/kernel/qt_x11_p.h
+++ b/src/gui/kernel/qt_x11_p.h
@@ -350,7 +350,7 @@ struct QX11Data
     // from qclipboard_x11.cpp
     bool clipboardWaitForEvent(Window win, int type, XEvent *event, int timeout);
     bool clipboardReadProperty(Window win, Atom property, bool deleteProperty,
-                            QByteArray *buffer, int *size, Atom *type, int *format, bool nullterm);
+                            QByteArray *buffer, int *size, Atom *type, int *format);
     QByteArray clipboardReadIncrementalProperty(Window win, Atom property, int nbytes, bool nullterm);
 
     // from qdnd_x11.cpp