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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --expose-gc
load('test/mjsunit/wasm/wasm-module-builder.js');
// Build two instances, instance 2 is interpreted, and calls instance 1 (via
// C_WASM_ENTRY), instance 1 then calls JS, which triggers GC.
let builder1 = new WasmModuleBuilder();
function call_gc() {
print('Triggering GC.');
gc();
print('Survived GC.');
}
let func1_sig = makeSig(new Array(8).fill(kWasmI32), [kWasmI32]);
let imp = builder1.addImport('q', 'gc', kSig_v_v);
let func1 = builder1.addFunction('func1', func1_sig)
.addBody([
kExprLocalGet, 0, // -
kExprCallFunction, imp
])
.exportFunc();
let instance1 = builder1.instantiate({q: {gc: call_gc}});
let builder2 = new WasmModuleBuilder();
let func1_imp = builder2.addImport('q', 'func1', func1_sig);
let func2 = builder2.addFunction('func2', kSig_i_i)
.addBody([
kExprLocalGet, 0, // 1
kExprLocalGet, 0, // 2
kExprLocalGet, 0, // 3
kExprLocalGet, 0, // 4
kExprLocalGet, 0, // 5
kExprLocalGet, 0, // 6
kExprLocalGet, 0, // 7
kExprLocalGet, 0, // 8
kExprCallFunction, func1_imp
])
.exportFunc();
let instance2 = builder2.instantiate({q: {func1: instance1.exports.func1}});
%RedirectToWasmInterpreter(
instance2, parseInt(instance2.exports.func2.name));
// Call with 1. This will be passed by the C_WASM_ENTRY via the stack, and the
// GC will try to dereference it (before the bug fix).
instance2.exports.func2(1);
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