wasmer/tests/spectest_semantics.rs

#[cfg(test)]
mod tests {
    use wabt::wat2wasm;
    use wasmer_runtime::{
        error::{CallError, RuntimeError},
        ExceptionCode, ImportObject,
    };

    // The semantics of stack overflow are documented at:
    // https://webassembly.org/docs/semantics/#stack-overflow
    #[test]
    #[ignore]
    fn test_stack_overflow() {
        let module_str = r#"(module
      (type (;0;) (func))
      (func (;0;) (type 0)
        i32.const 0
        call_indirect (type 0))
      (table (;0;) 1 anyfunc)
      (export "stack-overflow" (func 0))
      (elem (;0;) (i32.const 0) 0))
    "#;
        let wasm_binary = wat2wasm(module_str.as_bytes()).expect("WAST not valid or malformed");
        let module = wasmer_runtime::compile(&wasm_binary[..]).expect("WASM can't be compiled");
        let instance = module
            .instantiate(&ImportObject::new())
            .expect("WASM can't be instantiated");
        let result = instance.call("stack-overflow", &[]);

        match result {
            Err(err) => match err {
                CallError::Runtime(RuntimeError(e)) => {
                    e.downcast::<ExceptionCode>()
                        .expect("expecting exception code");
                }
                _ => unimplemented!(),
            },
            Ok(_) => panic!("should fail with error due to stack overflow"),
        }
    }
}