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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
(function TestUnalignedMemory() {
// Test that a buffer whose length is not a multiple of the element size of a
// heap view throws the proper {RangeError} during instantiation.
function Module(stdlib, foreign, heap) {
"use asm";
var a = new stdlib.Int32Array(heap);
function f() {}
return { f:f };
}
assertThrows(() => Module(this, {}, new ArrayBuffer(2)), RangeError);
assertThrows(() => Module(this, {}, new ArrayBuffer(10)), RangeError);
assertDoesNotThrow(() => Module(this, {}, new ArrayBuffer(4)));
assertDoesNotThrow(() => Module(this, {}, new ArrayBuffer(16)));
assertFalse(%IsAsmWasmCode(Module));
})();
(function TestMissingMemory() {
// Test that a buffer is required for instantiation of modules containing any
// heap views. JavaScript needs to create individual buffers for each view.
function Module(stdlib, foreign, heap) {
"use asm";
var a = new stdlib.Int16Array(heap);
var b = new stdlib.Int32Array(heap);
function f() {
a[0] = 0x1234;
return b[0] | 0;
}
return { f:f };
}
var m = Module(this, {}, undefined);
assertFalse(%IsAsmWasmCode(Module));
assertEquals(0, m.f());
})();
(function TestNonBufferMemory() {
// Test that a buffer has to be an instance of {ArrayBuffer} in order to be
// valid. JavaScript will also accept any other array-like object.
function Module(stdlib, foreign, heap) {
"use asm";
var a = new stdlib.Int32Array(heap);
function f() {
return a[0] | 0;
}
return { f:f };
}
var m = Module(this, {}, [ 23, 42 ]);
assertFalse(%IsAsmWasmCode(Module));
assertEquals(23, m.f());
})();
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