From fea181bde35b115de33adb5f80c3f6abe46cec72 Mon Sep 17 00:00:00 2001
From: Timothy Flynn <trflynn89@pm.me>
Date: Thu, 12 Aug 2021 22:19:14 -0400
Subject: [PATCH] LibRegex: Reduce RegexMatcher's BumpAllocator chunk size

Before the BumpAllocator OOB access issue was understood and fixed, the
chunk size was increased to 8MiB as a workaround in commit:
27d555bab0d84913599cea3c4a6b0a0ed2a15b66.

The issue is now resolved by: 0f1425c895ace40fbb10d68a55eeb3a6354479d3.

We can reduce the chunk size to 2MiB, which has the added benefit of
reducing runtime of the RegExp.prototype.exec test.
---
 Userland/Libraries/LibRegex/RegexMatcher.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibRegex/RegexMatcher.cpp b/Userland/Libraries/LibRegex/RegexMatcher.cpp
index 6b6ce96c71..c312ca3c81 100644
--- a/Userland/Libraries/LibRegex/RegexMatcher.cpp
+++ b/Userland/Libraries/LibRegex/RegexMatcher.cpp
@@ -391,7 +391,7 @@ private:
         Node* previous { nullptr };
     };
 
-    UniformBumpAllocator<Node, true, 8 * MiB> m_allocator;
+    UniformBumpAllocator<Node, true, 2 * MiB> m_allocator;
     Node* m_first { nullptr };
     Node* m_last { nullptr };
 };