e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
29 lines
694 B
JavaScript
29 lines
694 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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var g = 0;
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g = function() {}
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function f() {
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var r = /[abc]/i; // Optimized out.
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g(r);
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}
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%PrepareFunctionForOptimization(f);
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f(); f(); %OptimizeFunctionOnNextCall(f); // Warm-up.
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var re;
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g = function(r) { re = r; }
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f(); // Lazy deopt is forced here.
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assertNotEquals(undefined, re);
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assertEquals("[abc]", re.source);
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assertEquals("i", re.flags);
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assertEquals(0, re.lastIndex);
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assertArrayEquals(["a"], re.exec("a"));
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assertArrayEquals(["A"], re.exec("A"));
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assertNull(re.exec("d"));
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