Fix QTemporaryFile regressions and new found issues

With this change, the file template is always processed in original
QString format. Trying to generate native paths before adding a missing
placeholder mask could change the meaning of templates, such as "." and
"..", which are now tested to mean "..XXXXXX" and "...XXXXXX",
respectively.

After ensuring the template includes a placeholder mask, the path is
converted to a native *absolute* file path and the mask is sought for
again. On Windows, native paths were already absolute. On Symbian, we'd
need at least a clean path, as "." and ",," are not natively understood.

There is a requirement that the placeholder mask /XXXXXX+/ makes it
through this conversion unaltered, which relaxes prior requirements on
*nix platforms. On Windows and Symbian the conversion is under Qt's
control and not user-configurable.

Reviewed-by: Shane Kearns
(cherry picked from commit 401722ef9e6fe79bd41f9d5f79668f5c4997c8e6)

Conflicts:

	tests/auto/qtemporaryfile/tst_qtemporaryfile.cpp

Change-Id: Iac823881c865adf0931dc4f429c6c1ef135eeb56
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp b/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
index 655c167c21..f2d2b0a1c8 100644
--- a/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
+++ b/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
@@ -647,6 +647,8 @@ void tst_QTemporaryFile::QTBUG_4796_data()
     QString unicode = QString::fromUtf8("\xc3\xa5\xc3\xa6\xc3\xb8");
 
     QTest::newRow("<empty>") << QString() << QString() << true;
+    QTest::newRow(".") << QString(".") << QString() << true;
+    QTest::newRow("..") << QString("..") << QString() << true;
     QTest::newRow("blaXXXXXX") << QString("bla") << QString() << true;
     QTest::newRow("XXXXXXbla") << QString() << QString("bla") << true;
     QTest::newRow("does-not-exist/qt_temp.XXXXXX") << QString("does-not-exist/qt_temp") << QString() << false;