From: Chris Duncan <chris@zoso.dev>
Date: Sun, 16 Aug 2026 07:09:11 +0000 (-0700)
Subject: Fix truncation in bit shift.
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=d01eb58937ed670910064cbad10b12f042127b1c;p=nano25519.git

Fix truncation in bit shift.
---

diff --git a/src/assembly/ge.ts b/src/assembly/ge.ts
index c9e4c58..439f728 100644
--- a/src/assembly/ge.ts
+++ b/src/assembly/ge.ts
@@ -379,7 +379,7 @@ function slide_vartime (r: StaticArray<i8>, a: StaticArray<u8>): void {
 			if (!r[i + b]) {
 				continue
 			}
-			ribs = r[i + b] << i8(b)
+			ribs = i32(r[i + b]) << b
 			cmp = r[i] + ribs
 			if (cmp <= 15) {
 				r[i] = i8(cmp)