From 96006e40ce34dcae0cdd3a94b1b329c9ff633831 Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Wed, 22 Sep 2021 22:38:41 +0200
Subject: add llvm shutdown to free allocated memory

---
 src/llvm/mod.rs | 9 ++++++++-
 src/main.rs     | 2 ++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/llvm/mod.rs b/src/llvm/mod.rs
index f3e54a8..01ed3f2 100644
--- a/src/llvm/mod.rs
+++ b/src/llvm/mod.rs
@@ -8,7 +8,7 @@
 //! For the scope of this tutorial we mainly use assertions to validate the results from the LLVM
 //! API calls.
 
-use llvm_sys::prelude::LLVMBasicBlockRef;
+use llvm_sys::{core::LLVMShutdown, prelude::LLVMBasicBlockRef};
 
 use std::marker::PhantomData;
 
@@ -27,3 +27,10 @@ pub use value::{FnValue, Value};
 /// Wrapper for a LLVM Basic Block.
 #[derive(Copy, Clone)]
 pub struct BasicBlock<'llvm>(LLVMBasicBlockRef, PhantomData<&'llvm ()>);
+
+/// Deallocate and destroy all "ManagedStatic" variables.
+pub fn shutdown() {
+    unsafe {
+        LLVMShutdown();
+    };
+}
diff --git a/src/main.rs b/src/main.rs
index 7160e04..be3dede 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -98,4 +98,6 @@ fn main() {
 
     // Dump all the emitted LLVM IR to stdout.
     module.dump();
+
+    llvm::shutdown();
 }
-- 
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