Logging: Change arguments of message handler to avoid conversions

Introduce a new QtMessageHandler that takes QString instead of
char *: This avoids converting to local8bit , only to convert it back
to utf16 for Windows.

The old QMessageHandler is kept for a transition period, but will
be removed before Qt 5.0.

Also fix qEmergencyOut (that is called in OOM situations) to not rely
on the default message handler.

Change-Id: Iee0ce5838f97175c98788b847964273dd22d4a37
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 48a382eea6..34abb5b75b 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -85,7 +85,7 @@ public:
                 QT_TRY {
                     qt_message_output(stream->type,
                                       stream->context,
-                                      stream->buffer.toLocal8Bit().data());
+                                      stream->buffer);
                 } QT_CATCH(std::bad_alloc&) { /* We're out of memory - give up. */ }
             }
             delete stream;