| Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --allow-natives-syntax |
| 6 | |
| 7 | var thrower = { [Symbol.toPrimitive]: function() { FAIL } }; |
| 8 | |
| 9 | function testTrace(func) { |
| 10 | try { |
| 11 | func(thrower); |
| 12 | assertUnreachable(); |
| 13 | } catch (e) { |
| 14 | assertTrue(e.stack.indexOf("fromCharCode") >= 0); |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | testTrace(String.fromCharCode); |
| 19 | |
| 20 | function foo(x) { return String.fromCharCode(x); } |
| 21 | |
| 22 | foo(1); |
| 23 | foo(2); |
| 24 | testTrace(foo); |
| 25 | %OptimizeFunctionOnNextCall(foo); |
| 26 | testTrace(foo); |