From 3d298831db03c30682ac10d449655b68751362f9 Mon Sep 17 00:00:00 2001
From: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
Date: Sun, 13 Nov 2022 20:04:34 +0900
Subject: [PATCH] [IMM32] Get gHighestUserAddress in ImmInitializeGlobals

CORE-11700
---
 dll/win32/imm32/imm.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/dll/win32/imm32/imm.c b/dll/win32/imm32/imm.c
index 14193efb5cb..40f686e44f0 100644
--- a/dll/win32/imm32/imm.c
+++ b/dll/win32/imm32/imm.c
@@ -10,6 +10,7 @@
  */
 
 #include "precomp.h"
+#include <ndk/exfuncs.h>
 
 WINE_DEFAULT_DEBUG_CHANNEL(imm);
 
@@ -17,11 +18,13 @@ HMODULE ghImm32Inst = NULL; // Win: ghInst
 PSERVERINFO gpsi = NULL; // Win: gpsi
 SHAREDINFO gSharedInfo = { NULL }; // Win: gSharedInfo
 BYTE gfImmInitialized = FALSE; // Win: gfInitialized
+ULONG_PTR gHighestUserAddress = 0;
 
 // Win: ImmInitializeGlobals
 static BOOL APIENTRY ImmInitializeGlobals(HMODULE hMod)
 {
     NTSTATUS status;
+    SYSTEM_BASIC_INFORMATION SysInfo;
 
     if (hMod)
         ghImm32Inst = hMod;
@@ -36,6 +39,14 @@ static BOOL APIENTRY ImmInitializeGlobals(HMODULE hMod)
         return FALSE;
     }
 
+    status = NtQuerySystemInformation(SystemBasicInformation, &SysInfo, sizeof(SysInfo), NULL);
+    if (NT_ERROR(status))
+    {
+        ERR("\n");
+        return FALSE;
+    }
+    gHighestUserAddress = SysInfo.MaximumUserModeAddress;
+
     gfImmInitialized = TRUE;
     return TRUE;
 }