These functions should not take care not to unconditionally set the
capacityReserved private member, since the d may be referencing the
const shared_null or shared_empty which live in read-only memory.
The squeeze() methods check for ref > 1 instead of ref != 1 to prevent
detaching from the shared_null/shared_empty unnecessarily; the
shared_null/shared_empty ref count is -1, meaning squeeze() will never
detach from it.
Change-Id: Id3f1725a6f08b3a462343640a47bbe78f08ca7e7
Rubberstamped-by: Lars Knoll
Reviewed-on: http://codereview.qt-project.org/5454
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
a219b8f382