[c-api] could not load symbol "wasm_importtype_copy":

[Pangoraw]

Describe the bug

The c-api does not export the function wasm_importtype_copy even tough it is defined in the wasm.h header file.

echo "`wasmer -V` | `rustc -V` | `uname -m`"
# wasmer 3.0.0-rc.2 | rustc 1.61.0 (fe5b13d68 2022-05-18) | x86_64

Steps to reproduce

1. Run make build-capi
2. Test with nm target/release/libwasmer.so | grep wasm_importtype_copy which will fail

Expected behavior

The function should be implemented as per the wasm.h header.

Actual behavior

The function is not implemented.

Additional context

I suspect that adding the implementation can be fixed by adding this simple line:

From 49703d0d0db0a100c810660316560f05e165415d Mon Sep 17 00:00:00 2001
From: Paul <9824244+Pangoraw@users.noreply.github.com>
Date: Thu, 17 Nov 2022 23:02:45 +0100
Subject: [PATCH] implement wasm_importtype_copy

---
 lib/c-api/src/wasm_c_api/types/import.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/c-api/src/wasm_c_api/types/import.rs b/lib/c-api/src/wasm_c_api/types/import.rs
index dc2e891d7..8be6b99c1 100644
--- a/lib/c-api/src/wasm_c_api/types/import.rs
+++ b/lib/c-api/src/wasm_c_api/types/import.rs
@@ -11,6 +11,7 @@ pub struct wasm_importtype_t {
 }
 
 wasm_declare_boxed_vec!(importtype);
+wasm_impl_copy!(importtype);
 
 #[no_mangle]
 pub extern "C" fn wasm_importtype_new(
-- 
2.38.1

[fschutt]

Thank you for finding this bug, it's probably just a missing export on the API. We will fix this in the next version.