From dd7ec1fe44ce30348c14c5ed673ffda3c6f0bda3 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sat, 27 Apr 2019 14:36:20 +0300
Subject: [PATCH] - fixed crash on JIT allocations over 1 MB

https://forum.zdoom.org/viewtopic.php?t=64383
---
 src/scripting/vm/jit_runtime.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/scripting/vm/jit_runtime.cpp b/src/scripting/vm/jit_runtime.cpp
index f72402404..968fcc476 100644
--- a/src/scripting/vm/jit_runtime.cpp
+++ b/src/scripting/vm/jit_runtime.cpp
@@ -55,8 +55,9 @@ static void *AllocJitMemory(size_t size)
 	}
 	else
 	{
+		const size_t bytesToAllocate = MAX(size_t(1024 * 1024), size);
 		size_t allocatedSize = 0;
-		void *p = OSUtils::allocVirtualMemory(1024 * 1024, &allocatedSize, OSUtils::kVMWritable | OSUtils::kVMExecutable);
+		void *p = OSUtils::allocVirtualMemory(bytesToAllocate, &allocatedSize, OSUtils::kVMWritable | OSUtils::kVMExecutable);
 		if (!p)
 			return nullptr;
 		JitBlocks.Push((uint8_t*)p);