From 6002485582541df9dff3e2c782a014564e22ed07 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Tue, 27 Jan 2026 19:05:00 +0100
Subject: hash: Use a hashAlgorithmDetails struct for single source of truth

hashAlgorithm's are assumed to be valid; methods on invalid
hashAlgorithms will panic from out-of-bounds read when it's not found in
hashAlgorithmTable and that's expected and intended.
---
 pack_pack.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'pack_pack.go')

diff --git a/pack_pack.go b/pack_pack.go
index 6e0806b1..628fa258 100644
--- a/pack_pack.go
+++ b/pack_pack.go
@@ -176,7 +176,7 @@ func (repo *Repository) packTypeSizeWithin(pf *packFile, ofs uint64, seen map[pa
 		case ObjectTypeCommit, ObjectTypeTree, ObjectTypeBlob, ObjectTypeTag:
 			return ty, declaredSize, nil
 		case ObjectTypeRefDelta:
-			hashEnd := dataStart + uint64(repo.hashAlgo.size())
+			hashEnd := dataStart + uint64(repo.hashAlgo.Size())
 			if hashEnd > uint64(len(pf.data)) {
 				return ObjectTypeInvalid, 0, io.ErrUnexpectedEOF
 			}
@@ -273,7 +273,7 @@ func (repo *Repository) packBodyResolveWithin(pf *packFile, ofs uint64) (ObjectT
 			resultTy = ty
 			resolved = true
 		case ObjectTypeRefDelta:
-			hashEnd := dataStart + uint64(repo.hashAlgo.size())
+			hashEnd := dataStart + uint64(repo.hashAlgo.Size())
 			if hashEnd > uint64(len(pf.data)) {
 				return fail(io.ErrUnexpectedEOF)
 			}
-- 
cgit v1.3.1-10-gc9f91