Make mid() and midRef() properly return empty, non-null objects
authorGiuseppe D'Angelo <dangelog@gmail.com>
Mon, 23 Jan 2012 12:02:36 +0000 (12:02 +0000)
committerQt by Nokia <qt-info@nokia.com>
Tue, 24 Jan 2012 16:36:11 +0000 (17:36 +0100)
commit601d68584921a47d83d833228f5ec698e13b624c
tree235d066cefcb5a5f2a7d4029c9b5512fdb17b500
parentb39df8bf92a530783144dbcf5cae939742ff2d23
Make mid() and midRef() properly return empty, non-null objects

If we request a substring starting at the very end of the string,
QString::mid should return an empty string, not a null string.
For instance, QString("abc").mid(3, 0) used to return a null
one, while this patch makes it return an empty one. The
same thing applies to QString::midRef() and QByteArray::mid().

Change-Id: Ie9efd7a0622d429efd0fb682c19856c19e9469af
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
dist/changes-5.0.0
src/corelib/tools/qbytearray.cpp
src/corelib/tools/qstring.cpp
tests/auto/corelib/tools/qstring/tst_qstring.cpp
tests/auto/other/collections/tst_collections.cpp