wasm-onExceptionUnwind-gc.js

Enable keyboard shortcuts

// |jit-test| skip-if: !wasmDebuggingEnabled()

var sandbox = newGlobal({newCompartment: true});

var dbg = new Debugger(sandbox);

var counter = 0;

dbg.onExceptionUnwind = (frame, value) => {

    if (frame.type !== "wasmcall")

        return;

    if (++counter != 2)

        return;

    gc();

};

sandbox.innerCode = wasmTextToBinary(`(module

    (import "imports" "tbl" (table 1 funcref))

    (import "imports" "setNull" (func $setNull))

    (func $trap

        call $setNull

        unreachable

    (elem (i32.const 0) $trap)

)`);

sandbox.outerCode = wasmTextToBinary(`(module

    (import "imports" "tbl" (table 1 funcref))

    (type $v2v (func))

    (func (export "run")

        i32.const 0

        call_indirect (type $v2v)

)`);

sandbox.eval(`

(function() {

var tbl = new WebAssembly.Table({initial:1, element:"funcref"});

function setNull() { tbl.set(0, null) }

new WebAssembly.Instance(new WebAssembly.Module(innerCode), {imports:{tbl,setNull}});

var outer = new WebAssembly.Instance(new WebAssembly.Module(outerCode), {imports:{tbl}});

var caught;

try {

    outer.exports.run();

} catch (e) {

    caught = e;

assertEq(caught instanceof WebAssembly.RuntimeError, true);

})();

`);