From 3c4f205a54dc3d84fe5716e9f759122f0891a599 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 11 Jun 2026 13:23:23 +0000
Subject: internal/format/packfile: Panic on implausible hash sizes

---
 internal/format/packfile/entry_header_test.go | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

(limited to 'internal/format/packfile/entry_header_test.go')

diff --git a/internal/format/packfile/entry_header_test.go b/internal/format/packfile/entry_header_test.go
index 807c544e..79dc2740 100644
--- a/internal/format/packfile/entry_header_test.go
+++ b/internal/format/packfile/entry_header_test.go
@@ -130,10 +130,15 @@ func TestParseEntryHeaderBadHashSize(t *testing.T) {
 	t.Parallel()
 
 	for _, hashSize := range []int{-1, 0, id.MaxObjectIDSize + 1} {
-		_, err := packfile.ParseEntryHeader([]byte{0x95, 0x05}, hashSize)
-		if err == nil {
-			t.Fatalf("ParseEntryHeader hash size %d: expected error", hashSize)
-		}
+		func() {
+			defer func() {
+				if recover() == nil {
+					t.Fatalf("ParseEntryHeader hash size %d: expected panic", hashSize)
+				}
+			}()
+
+			_, _ = packfile.ParseEntryHeader([]byte{0x95, 0x05}, hashSize)
+		}()
 	}
 }
 
-- 
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