From c9fdf61bd91875cdc71559cd9bab8314ad8775e1 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Sun, 14 Jun 2026 14:13:45 +0000
Subject: object/store/packed, cmd/idx-bloom: NewBuilder wants a PackHash

---
 object/store/packed/pack.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'object/store/packed/pack.go')

diff --git a/object/store/packed/pack.go b/object/store/packed/pack.go
index ba865e51..9cd6162b 100644
--- a/object/store/packed/pack.go
+++ b/object/store/packed/pack.go
@@ -73,7 +73,7 @@ func openPack(root *os.Root, name string, objectFormat id.ObjectFormat) (*pack,
 		return nil, fmt.Errorf("%w: pack %q: %w", ErrMalformedPackedStore, name, err)
 	}
 
-	bloomMapping, filter := openBloom(root, name, objectFormat)
+	bloomMapping, filter := openBloom(root, name, objectFormat, idx.PackHash())
 
 	return &pack{
 		name:         name,
@@ -86,7 +86,7 @@ func openPack(root *os.Root, name string, objectFormat id.ObjectFormat) (*pack,
 	}, nil
 }
 
-func openBloom(root *os.Root, name string, objectFormat id.ObjectFormat) (*mmap.Mmap, *bloom.Bloom) {
+func openBloom(root *os.Root, name string, objectFormat id.ObjectFormat, packHash []byte) (*mmap.Mmap, *bloom.Bloom) {
 	mapping, err := mapFile(root, name+".bloom")
 	if err != nil {
 		return nil, nil
@@ -99,6 +99,12 @@ func openBloom(root *os.Root, name string, objectFormat id.ObjectFormat) (*mmap.
 		return nil, nil
 	}
 
+	if !bytes.Equal(filter.PackHash(), packHash) {
+		_ = mapping.Close()
+
+		return nil, nil
+	}
+
 	return mapping, &filter
 }
 
-- 
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