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-rw-r--r--util/hbitmap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/util/hbitmap.c b/util/hbitmap.c
index fb7e01e8c5..2aa487db74 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -147,6 +147,7 @@ void hbitmap_iter_init(HBitmapIter *hbi, const HBitmap *hb, uint64_t first)
hbi->hb = hb;
pos = first >> hb->granularity;
+ assert(pos < hb->size);
hbi->pos = pos >> BITS_PER_LEVEL;
hbi->granularity = hb->granularity;