From a9f08b0cc6614eb371df793e48a8ef2471b16523 Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Wed, 28 Jul 2021 12:43:10 +1000
Subject: [PATCH] QList::removeAt crashes in qt6 if index is -1, so use
 QList::removeAll instead of QList::removeAt( QList::indexOf(...

---
 src/core/classification/qgsclassificationmethod.cpp | 4 ++--
 src/core/qgsrenderchecker.cpp                       | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/core/classification/qgsclassificationmethod.cpp b/src/core/classification/qgsclassificationmethod.cpp
index 70f70799f501..7d9b5726c570 100644
--- a/src/core/classification/qgsclassificationmethod.cpp
+++ b/src/core/classification/qgsclassificationmethod.cpp
@@ -325,9 +325,9 @@ void QgsClassificationMethod::makeBreaksSymmetric( QList<double> &breaks, double
     }
   }
   // remove symmetry point
-  if ( astride ) // && breaks.indexOf( symmetryPoint ) != -1) // if symmetryPoint is found
+  if ( astride )
   {
-    breaks.removeAt( breaks.indexOf( symmetryPoint ) );
+    breaks.removeAll( symmetryPoint );
   }
 }
 
diff --git a/src/core/qgsrenderchecker.cpp b/src/core/qgsrenderchecker.cpp
index d67b96241f65..3433713102be 100644
--- a/src/core/qgsrenderchecker.cpp
+++ b/src/core/qgsrenderchecker.cpp
@@ -106,7 +106,7 @@ bool QgsRenderChecker::isKnownAnomaly( const QString &diffImageFile )
                                   QDir::Files | QDir::NoSymLinks );
   //remove the control file from the list as the anomalies are
   //all files except the control file
-  myList.removeAt( myList.indexOf( QFileInfo( mExpectedImageFile ).fileName() ) );
+  myList.removeAll( QFileInfo( mExpectedImageFile ).fileName() );
 
   QString myImageHash = imageToHash( diffImageFile );