From bff683416c73329eb91bdb0bc282f4022c9fec7e Mon Sep 17 00:00:00 2001
From: Edward Welbourne <edward.welbourne@qt.io>
Date: Fri, 8 Jul 2016 14:41:49 +0200
Subject: [PATCH] QDateTimeEditPrivate:: only ask for fieldInfo() if section
 index is real

On construction, currentSectionIndex has the fake value
FirstSectionIndex, which upsets fieldInfo(), leading to a qWarning().
Make interpret(), when deciding whether to delegate to base or handle
the value itself, treat fake index value as an invalid state.

Task-number: QTBUG-54654
Change-Id: I6d0f71874839abfafcbfaaa0018362288f32a3cd
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
---
 src/widgets/widgets/qdatetimeedit.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/widgets/widgets/qdatetimeedit.cpp b/src/widgets/widgets/qdatetimeedit.cpp
index 96a37197e9..98b0489dfc 100644
--- a/src/widgets/widgets/qdatetimeedit.cpp
+++ b/src/widgets/widgets/qdatetimeedit.cpp
@@ -2344,7 +2344,9 @@ void QDateTimeEditPrivate::interpret(EmitPolicy ep)
     const QValidator::State state = q->validate(tmp, pos);
     if (state != QValidator::Acceptable
         && correctionMode == QAbstractSpinBox::CorrectToPreviousValue
-        && (state == QValidator::Invalid || !(fieldInfo(currentSectionIndex) & AllowPartial))) {
+        && (state == QValidator::Invalid
+            || currentSectionIndex < 0
+            || !(fieldInfo(currentSectionIndex) & AllowPartial))) {
         setValue(value, ep);
         updateTimeSpec();
     } else {