From ca30bcce456d20702e3699822cd4f1c963ef1cec Mon Sep 17 00:00:00 2001
From: Zeke Lu <lvzecai@gmail.com>
Date: Mon, 26 Sep 2022 22:49:28 +0800
Subject: [PATCH] address review issue

---
 src/internal/saferio/io.go | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/internal/saferio/io.go b/src/internal/saferio/io.go
index 8f8262e844..66cc044c74 100644
--- a/src/internal/saferio/io.go
+++ b/src/internal/saferio/io.go
@@ -121,12 +121,11 @@ func SliceCap(v any, c uint64) int {
 	if typ.Kind() != reflect.Ptr {
 		panic("SliceCap called with non-pointer type")
 	}
-	size := typ.Elem().Size()
-	total := uintptr(c) * size
-	if size > 0 && total/size != uintptr(c) {
+	size := uint64(typ.Elem().Size())
+	if size > 0 && c > (1<<64-1)/size {
 		return -1
 	}
-	if total > chunk {
+	if c*size > chunk {
 		c = uint64(chunk / size)
 		if c == 0 {
 			c = 1