From 355f5b3dc9ae560827cd274e113f43d09ee9ac49 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 5 Mar 2026 21:09:07 +0800
Subject: *: Fix overflows

---
 format/pack/ingest/idx_write.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'format/pack/ingest/idx_write.go')

diff --git a/format/pack/ingest/idx_write.go b/format/pack/ingest/idx_write.go
index 8db11ba0..904afb6c 100644
--- a/format/pack/ingest/idx_write.go
+++ b/format/pack/ingest/idx_write.go
@@ -7,6 +7,8 @@ import (
 	"hash"
 	"io"
 	"slices"
+
+	"codeberg.org/lindenii/furgit/internal/intconv"
 )
 
 const (
@@ -87,7 +89,12 @@ func writeIdx(state *ingestState) error {
 	for _, recordIdx := range order {
 		offset := state.records[recordIdx].offset
 		if offset >= 0x80000000 {
-			word := 0x80000000 | uint32(len(largeOffsets))
+			largeOffsetIdx, err := intconv.IntToUint32(len(largeOffsets))
+			if err != nil {
+				return err
+			}
+
+			word := 0x80000000 | largeOffsetIdx
 			largeOffsets = append(largeOffsets, offset)
 
 			binary.BigEndian.PutUint32(scratch[:4], word)
-- 
cgit v1.3.1-10-gc9f91