From 3aeab23bf175a6298c01d59273e4d11d290cd7ed Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 17 Jul 2020 14:45:55 -0500
Subject: [PATCH] Fix leaking funcrefs in the C API (#2040)

This commit adds a case to the destructor of `wasm_val_t` to be sure to
deallocate the `Box<wasm_ref_t>`.
---
 crates/c-api/src/val.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/c-api/src/val.rs b/crates/c-api/src/val.rs
index 243df313f39d..4c7777dd1346 100644
--- a/crates/c-api/src/val.rs
+++ b/crates/c-api/src/val.rs
@@ -25,7 +25,7 @@ pub union wasm_val_union {
 impl Drop for wasm_val_t {
     fn drop(&mut self) {
         match into_valtype(self.kind) {
-            ValType::ExternRef => unsafe {
+            ValType::FuncRef | ValType::ExternRef => unsafe {
                 if !self.of.ref_.is_null() {
                     drop(Box::from_raw(self.of.ref_));
                 }