From 21dc4ddaf21b8ed551d717e7606abd2cffbacdbf Mon Sep 17 00:00:00 2001
From: LaffeyNyaa <112215776+LaffeyNyaa@users.noreply.github.com>
Date: Sat, 23 Aug 2025 16:38:30 +0800
Subject: [PATCH] chat : fix debug build assertion in trim function (#15520)

---
 src/llama-chat.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/llama-chat.cpp b/src/llama-chat.cpp
index 0a96a9a579..4d6fdf8226 100644
--- a/src/llama-chat.cpp
+++ b/src/llama-chat.cpp
@@ -16,10 +16,10 @@
 static std::string trim(const std::string & str) {
     size_t start = 0;
     size_t end = str.size();
-    while (start < end && isspace(str[start])) {
+    while (start < end && isspace(static_cast<unsigned char>(str[start]))) {
         start += 1;
     }
-    while (end > start && isspace(str[end - 1])) {
+    while (end > start && isspace(static_cast<unsigned char>(str[end - 1]))) {
         end -= 1;
     }
     return str.substr(start, end - start);