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wasmFailValidateText(`(module
(func
throw_ref
)
)`, /popping value from empty stack/);
wasmValidateText(`(module
(func (param exnref)
local.get 0
throw_ref
)
)`);
// Can rethrow a value
{
let {test} = wasmEvalText(`(module
(tag $a)
(func (export "test")
(block (result exnref)
try_table (catch_all_ref 0)
throw $a
end
unreachable
)
throw_ref
)
)`).exports;
assertErrorMessage(test, WebAssembly.Exception, /.*/);
}
// Rethrowing a value inside a try works
{
let {test} = wasmEvalText(`(module
(tag $E)
(func (export "test") (param $shouldRethrow i32) (result i32)
(local $e exnref)
(block $catch (result exnref)
(try_table (catch_ref $E $catch) (throw $E))
unreachable
)
(local.set $e)
(block $catch (result exnref)
(try_table (result i32) (catch_ref $E $catch)
(if (i32.eqz (local.get $shouldRethrow))
(then (throw_ref (local.get $e)))
)
(i32.const 2)
)
(return)
)
(drop) (i32.const 1)
)
)`).exports;
assertEq(test(0), 1);
assertEq(test(1), 2);
}
// Traps on null
{
let {test} = wasmEvalText(`(module
(tag $a)
(func (export "test")
ref.null exn
throw_ref
)
)`).exports;
assertErrorMessage(test, WebAssembly.RuntimeError, /null/);
}