From 08031a2767e311a43a3341f9ce0a21f04d9881ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Tue, 28 Jul 2026 23:16:58 +0300
Subject: [PATCH] Add missing includes

This fixes compilation with libc++ 23, which has removed a number
of unnecessary transitive includes in its headers.

Include <cstdlib> in StringConv.h for std::strtoll and std::strtoull.

Include <cstdlib> for the declarations of malloc/free/realloc/calloc
in Alloc.cpp. (Without this, the functions we define end up with
C++ name mangling.)

Include <stdarg.h> in IO.cpp for va_start/va_end.
---
 FEXCore/Source/Common/StringConv.h  | 1 +
 Source/Windows/Common/CRT/Alloc.cpp | 1 +
 Source/Windows/Common/CRT/IO.cpp    | 1 +
 3 files changed, 3 insertions(+)

diff --git a/FEXCore/Source/Common/StringConv.h b/FEXCore/Source/Common/StringConv.h
index e4b2dad1e..52ba07315 100644
--- a/FEXCore/Source/Common/StringConv.h
+++ b/FEXCore/Source/Common/StringConv.h
@@ -4,6 +4,7 @@
 
 #include <concepts>
 #include <string_view>
+#include <cstdlib>
 
 namespace FEXCore::StrConv {
 template<std::integral T>
diff --git a/Source/Windows/Common/CRT/Alloc.cpp b/Source/Windows/Common/CRT/Alloc.cpp
index 3d5f60de8..0e11be2fb 100644
--- a/Source/Windows/Common/CRT/Alloc.cpp
+++ b/Source/Windows/Common/CRT/Alloc.cpp
@@ -2,6 +2,7 @@
 #define _SECIMP
 #define _CRTIMP
 #include <cstdint>
+#include <cstdlib>
 #include "../Priv.h"
 #include <rpmalloc/rpmalloc.h>
 
diff --git a/Source/Windows/Common/CRT/IO.cpp b/Source/Windows/Common/CRT/IO.cpp
index 0f4704a74..8e41b4e1c 100644
--- a/Source/Windows/Common/CRT/IO.cpp
+++ b/Source/Windows/Common/CRT/IO.cpp
@@ -14,6 +14,7 @@ struct FILE;
 #include <cerrno>
 #include <io.h>
 #include <ctype.h>
+#include <stdarg.h>
 #include <wchar.h>
 #include <windef.h>
 #include <winternl.h>