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QPixmapCache: add a comment on how failed insert() invalidates cacheKey

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It wasn't obvious to me, at least, and I only found out about it when
I failed to construct a test failure based on this.

Pick-to: 6.6 6.5 6.2 5.15
Change-Id: I339132d7bb2cb8a76f0f1feec37891d6131c4d7b
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
This commit is contained in:
Marc Mutz 2023-06-07 07:29:31 +02:00
parent e409d771d9
commit 588ca25e4a
1 changed files with 1 additions and 1 deletions
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2
src/gui/image/qpixmapcache.cpp
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@ -340,7 +340,7 @@ bool QPMCache::insert(const QString& key, const QPixmap &pixmap, int cost)
QPixmapCache::Key QPMCache::insert(const QPixmap &pixmap, int cost)
{
QPixmapCache::Key cacheKey = createKey();
QPixmapCache::Key cacheKey = createKey(); // invalidated by ~QPixmapCacheEntry on failed insert
bool success = QCache<QPixmapCache::Key, QPixmapCacheEntry>::insert(cacheKey, new QPixmapCacheEntry(cacheKey, pixmap), cost);
if (success) {
if (!theid) {