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-rw-r--r--layout/generic/nsTextFrame.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/layout/generic/nsTextFrame.cpp b/layout/generic/nsTextFrame.cpp
index 0641c7439..59ef020ce 100644
--- a/layout/generic/nsTextFrame.cpp
+++ b/layout/generic/nsTextFrame.cpp
@@ -7525,7 +7525,8 @@ nsTextFrame::GetCharacterRectsInRange(int32_t aInOffset,
gfxSkipCharsIterator nextIter(iter);
nextIter.AdvanceOriginal(1);
if (!nextIter.IsOriginalCharSkipped() &&
- !mTextRun->IsClusterStart(nextIter.GetSkippedOffset())) {
+ !mTextRun->IsClusterStart(nextIter.GetSkippedOffset()) &&
+ nextIter.GetOriginalOffset() < kContentEnd) {
FindClusterEnd(mTextRun, kContentEnd, &nextIter);
}