QtCore: use qUtf16Printable and %ls, qErrnoWarning()

... instead of qPrintable(), %s, and explicit qt_error_string().

Saves 2KiB in text size on optimized Linux AMD64 GCC 9.1 builds.

Change-Id: I98b6717da1ed1b678f01167d704a96f10da47966
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
 
 
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
 

1 files changed, 2 insertions, 2 deletions

diff --git a/src/corelib/statemachine/qstatemachine.cpp b/src/corelib/statemachine/qstatemachine.cpp
index e6dfacc0f5..3a86d971e2 100644
--- a/src/corelib/statemachine/qstatemachine.cpp
+++ b/src/corelib/statemachine/qstatemachine.cpp
@@ -1526,8 +1526,8 @@ void QStateMachinePrivate::setError(QStateMachine::Error errorCode, QAbstractSta
         addAncestorStatesToEnter(currentErrorState, rootState(), pendingErrorStates, pendingErrorStatesForDefaultEntry);
         pendingErrorStates -= configuration;
     } else {
-        qWarning("Unrecoverable error detected in running state machine: %s",
-                 qPrintable(errorString));
+        qWarning("Unrecoverable error detected in running state machine: %ls",
+                 qUtf16Printable(errorString));
         q->stop();
     }
 }