https://git.ruby-lang.org/ruby.git/commit/?id=0095362918

From 0095362918375fb694345133e33199b01911e594 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lourens=20Naud=C3=A9?= <lourens@b...>
Date: Mon, 21 Oct 2019 23:49:54 +0100
Subject: Right size the vm_default_params hash


diff --git a/vm.c b/vm.c
index e104688..9f02489 100644
--- a/vm.c
+++ b/vm.c
@@ -2373,7 +2373,7 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/vm.c#L2373
 vm_default_params(void)
 {
     rb_vm_t *vm = GET_VM();
-    VALUE result = rb_hash_new();
+    VALUE result = rb_hash_new_with_size(4);
 #define SET(name) rb_hash_aset(result, ID2SYM(rb_intern(#name)), SIZET2NUM(vm->default_params.name));
     SET(thread_vm_stack_size);
     SET(thread_machine_stack_size);
-- 
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