pub fn dlsym<M: MemorySize>(
ctx: FunctionEnvMut<'_, WasiEnv>,
handle: DlHandle,
symbol: WasmPtr<u8, M>,
symbol_len: M::Offset,
err_buf: WasmPtr<u8, M>,
err_buf_len: M::Offset,
out_symbol: WasmPtr<M::Offset, M>,
) -> Result<Errno, WasiError>