21cbc91443
This makes sure that the coercion of global import values to numbers remains non-observable to JavaScript. It allows instantiation failures to fall back to JavaScript proper without accidentally causing some side-effect to happen twice. Also coercions might invalidate previous checks done during linking or throw exceptions. R=clemensh@chromium.org TEST=mjsunit/regress/regress-6431 BUG=v8:6431 Change-Id: Ibe2f7a336bc0fb25532d526746ecc802e04bbd5c Reviewed-on: https://chromium-review.googlesource.com/512544 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#46051}
33 lines
917 B
JavaScript
33 lines
917 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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(function TestImportSymbolValue() {
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function Module(stdlib, foreign) {
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"use asm";
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var x = +foreign.x;
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function f() {}
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return { f:f };
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}
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var foreign = { x : Symbol("boom") };
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assertThrows(() => Module(this, foreign));
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assertFalse(%IsAsmWasmCode(Module));
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})();
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(function TestImportMutatingObject() {
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function Module(stdlib, foreign) {
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"use asm";
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var x = +foreign.x;
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var PI = stdlib.Math.PI;
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function f() { return +(PI + x) }
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return { f:f };
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}
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var stdlib = { Math : { PI : Math.PI } };
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var foreign = { x : { valueOf : () => (stdlib.Math.PI = 23, 42) } };
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var m = Module(stdlib, foreign);
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assertFalse(%IsAsmWasmCode(Module));
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assertEquals(65, m.f());
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})();
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