From 250cc1e806f2b94696d0626ce2158c21a99961fa Mon Sep 17 00:00:00 2001
From: diamante0018 <iw4x-sp@proton.me>
Date: Sat, 29 Nov 2025 18:42:25 +0100
Subject: [PATCH] fix: copy va

---
 src/utils/string.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/utils/string.hpp b/src/utils/string.hpp
index c704f2b..814b5ac 100644
--- a/src/utils/string.hpp
+++ b/src/utils/string.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include "memory.hpp"
+#include <cstdarg>
 
 template <class Type, std::size_t n>
 constexpr auto ARRAY_COUNT(Type(&)[n]) { return n; }
@@ -30,7 +31,12 @@ namespace utils
 
 				while (true)
 				{
-					const auto res = vsnprintf(entry->buffer_, entry->size_, format, ap);
+					va_list ap_copy;
+					va_copy(ap_copy, ap);
+
+					const auto res = vsnprintf(entry->buffer_, entry->size_, format, ap_copy);
+					va_end(ap_copy);
+
 					if (res < 0) return nullptr; // Error
 
 					if (static_cast<std::size_t>(res) >= entry->size_)