Function wasmer_runtime_c_api::import::wasmer_trap

#[no_mangle]
pub unsafe extern "C" fn wasmer_trap(
    ctx: *const wasmer_instance_context_t, 
    error_message: *const c_char
) -> wasmer_result_t

Stop the execution of a host function, aka imported function. The function must be used only inside a host function.

The pointer to wasmer_instance_context_t is received by the host function as its first argument. Just passing it to ctx is fine.

The error message must have a greater lifetime than the host function itself since the error is read outside the host function with wasmer_last_error_message.

This function returns wasmer_result_t::WASMER_ERROR if ctx or error_message are null.

This function never returns otherwise.