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Fix crash in vector layer iteration on Qt6 builds
Decrementing an iterator which is already at the beginning results
in a crash

(cherry picked from commit 6776b1b)
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nyalldawson committed Jul 23, 2021
1 parent daa6df5 commit c13c5de
Showing 1 changed file with 2 additions and 1 deletion.
3 changes: 2 additions & 1 deletion src/core/vector/qgsvectorlayerfeatureiterator.cpp
Expand Up @@ -537,7 +537,8 @@ bool QgsVectorLayerFeatureIterator::isValid() const

bool QgsVectorLayerFeatureIterator::fetchNextAddedFeature( QgsFeature &f )
{
while ( mFetchAddedFeaturesIt-- != mSource->mAddedFeatures.constBegin() )
while ( mFetchAddedFeaturesIt != mSource->mAddedFeatures.constBegin() &&
mFetchAddedFeaturesIt-- != mSource->mAddedFeatures.constBegin() )
{
QgsFeatureId fid = mFetchAddedFeaturesIt->id();

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