From 2f16a58419dd140cc38aa4568bfa65381815738b Mon Sep 17 00:00:00 2001
From: csh <458761603@qq.com>
Date: Mon, 27 May 2024 21:44:08 +0800
Subject: [PATCH] [Fix] Avoid panic due to new types introduced by GC

Signed-off-by: csh <458761603@qq.com>
---
 crates/wasmedge-sys/src/types.rs | 12 ++++++++----
 crates/wasmedge-types/src/lib.rs |  2 ++
 src/types.rs                     |  4 ++++
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/crates/wasmedge-sys/src/types.rs b/crates/wasmedge-sys/src/types.rs
index 5ec59e272..b00df8659 100644
--- a/crates/wasmedge-sys/src/types.rs
+++ b/crates/wasmedge-sys/src/types.rs
@@ -381,16 +381,18 @@ impl From<ffi::WasmEdge_ValType> for ValType {
                 } else if ffi::WasmEdge_ValTypeIsExternRef(value) {
                     ValType::ExternRef
                 } else {
-                    panic!(
+                    log::warn!(
                         "capi unsupport WasmEdge_RefType `{:x}`",
                         u64::from_be_bytes(value.Data)
-                    )
+                    );
+                    ValType::UnsupportedRef
                 }
             } else {
-                panic!(
+                log::warn!(
                     "unknown WasmEdge_ValType `{:x}`",
                     u64::from_be_bytes(value.Data)
-                )
+                );
+                ValType::UnsupportedRef
             }
         }
     }
@@ -406,6 +408,8 @@ impl From<ValType> for ffi::WasmEdge_ValType {
                 ValType::V128 => ffi::WasmEdge_ValTypeGenV128(),
                 ValType::FuncRef => ffi::WasmEdge_ValTypeGenFuncRef(),
                 ValType::ExternRef => ffi::WasmEdge_ValTypeGenExternRef(),
+                // C API is temporarily unsupported.
+                ValType::UnsupportedRef => ffi::WasmEdge_ValTypeGenExternRef(),
             }
         }
     }
diff --git a/crates/wasmedge-types/src/lib.rs b/crates/wasmedge-types/src/lib.rs
index b7077fe9c..7b99274ca 100644
--- a/crates/wasmedge-types/src/lib.rs
+++ b/crates/wasmedge-types/src/lib.rs
@@ -64,6 +64,8 @@ pub enum ValType {
     FuncRef,
     /// A reference to object.
     ExternRef,
+    /// A reference that unsupported by c-api.
+    UnsupportedRef,
 }
 
 /// Defines the mutability property of WasmEdge Global variables.
diff --git a/src/types.rs b/src/types.rs
index a44398db7..0ec9615eb 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -67,6 +67,10 @@ impl From<WasmValue> for Val {
                     Val::ExternRef(Some(ExternRef { inner: value }))
                 }
             }
+            wasmedge_types::ValType::UnsupportedRef => {
+                // Waiting for more GC-related C APIs.
+                Val::ExternRef(None)
+            }
         }
     }
 }