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-rw-r--r--Source/JavaScriptCore/heap/WeakBlock.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/Source/JavaScriptCore/heap/WeakBlock.cpp b/Source/JavaScriptCore/heap/WeakBlock.cpp
index 685779d3a..8900e73df 100644
--- a/Source/JavaScriptCore/heap/WeakBlock.cpp
+++ b/Source/JavaScriptCore/heap/WeakBlock.cpp
@@ -69,7 +69,8 @@ void WeakBlock::lastChanceToFinalize()
void WeakBlock::sweep()
{
- if (!m_sweepResult.isNull())
+ // If a block is completely empty, a sweep won't have any effect.
+ if (isEmpty())
return;
SweepResult sweepResult;