From 308bef16d6a1c73b0b135823637e2f06d00fb5db Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Fri, 6 Mar 2026 08:04:32 +0800
Subject: internal/intconv: Add Uint32ToUint8

---
 internal/intconv/intconv.go | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'internal')

diff --git a/internal/intconv/intconv.go b/internal/intconv/intconv.go
index 8d3ac9c6..ab9d5c63 100644
--- a/internal/intconv/intconv.go
+++ b/internal/intconv/intconv.go
@@ -77,3 +77,12 @@ func SignExtendByteToUint32(b byte) uint32 {
 
 	return 0xFFFFFF00 | uint32(b)
 }
+
+// Uint32ToUint8 converts v to uint8, returning an error if it overflows.
+func Uint32ToUint8(v uint32) (uint8, error) {
+	if v > math.MaxUint8 {
+		return 0, fmt.Errorf("intconv: uint32 %d overflows uint8", v)
+	}
+
+	return uint8(v), nil
+}
-- 
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