From d155c93ae403d91a7fa73dadf265562357133fc5 Mon Sep 17 00:00:00 2001
From: sijun-yang <yangsijun5528@gmail.com>
Date: Sat, 25 Jul 2026 20:00:30 +0900
Subject: [PATCH] Fix b2a_qp CRLF boundary check (#8358)

Assisted-by: Codex:gpt-5.6-sol
---
 crates/stdlib/src/binascii.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/stdlib/src/binascii.rs b/crates/stdlib/src/binascii.rs
index 579a5081c..0cf005628 100644
--- a/crates/stdlib/src/binascii.rs
+++ b/crates/stdlib/src/binascii.rs
@@ -504,7 +504,7 @@ mod decl {
                 }
                 in_idx += 1;
             }
-            if buflen > 0 && in_idx < buflen && buf[in_idx - 1] == b'\r' {
+            if in_idx > 0 && in_idx < buflen && buf[in_idx - 1] == b'\r' {
                 crlf = true;
             }