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-rw-r--r--src/plugins/platforms/ios/qiostextresponder.mm6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/plugins/platforms/ios/qiostextresponder.mm b/src/plugins/platforms/ios/qiostextresponder.mm
index 1bc9744528..a3350bda87 100644
--- a/src/plugins/platforms/ios/qiostextresponder.mm
+++ b/src/plugins/platforms/ios/qiostextresponder.mm
@@ -745,7 +745,11 @@
- (UITextPosition *)positionFromPosition:(UITextPosition *)position offset:(NSInteger)offset
{
int p = static_cast<QUITextPosition *>(position).index;
- return [QUITextPosition positionWithIndex:p + offset];
+ const int posWithIndex = p + offset;
+ const int textLength = [self currentImeState:Qt::ImSurroundingText].toString().length();
+ if (posWithIndex < 0 || posWithIndex > textLength)
+ return nil;
+ return [QUITextPosition positionWithIndex:posWithIndex];
}
- (UITextPosition *)positionFromPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction offset:(NSInteger)offset