Apply NSDMI to some internal datetime and timezone types

Although parsedRfcDateTime's clients never read utcOffset unless date
and time are valid, and never set them to anything valid without also
setting utcOffset, let's not leave it uninitialized by default.

The TZ file digester didn't actually set QTzTimeZoneCacheEntry except
when setting it to true, so let's make sure it's properly initialized
to false. The m_preZoneRule was initialized to all-zeros in one branch
of its construction, so set it to that by default so that its default
constructor leaves no member uninitialized.

These types are only constructed in parsers anyway, so the minor cost
of setting fields to zero is dwarfed by string manipulations.

Task-number: QTBUG-122619
Change-Id: I6c57fc6d33c379af3f7c6de80c4ca47e431f9d92
Reviewed-by: Mate Barany <mate.barany@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/time/qdatetime.cpp b/src/corelib/time/qdatetime.cpp
index 2f1f80d70d..199fe0f015 100644
--- a/src/corelib/time/qdatetime.cpp
+++ b/src/corelib/time/qdatetime.cpp
@@ -130,7 +130,7 @@ ParsedInt readInt(QStringView text)
 struct ParsedRfcDateTime {
     QDate date;
     QTime time;
-    int utcOffset;
+    int utcOffset = 0;
 };
 
 static int shortDayFromName(QStringView name)