Status: New
Owner: ----
New issue 2679 by [email protected]: Incompatibility to ECMA 5.1
for function calls.
http://code.google.com/p/v8/issues/detail?id=2679
Please see the following example:
function foo() {
Math.sqrt = Math.exp;
return 2;
}
console.log(Math.sqrt(2));
console.log(Math.exp(2));
console.log(Math.sqrt(foo()));
Executed on V8 it returns the following values:
1.4142135623730951
7.3890560989306495
7.3890560989306495
But it should be:
1.4142135623730951
7.3890560989306495
1.4142135623730951
ECMA 5.1 clearly states in section (11.2.3 Function Calls):
1. Let ref be the result of evaluating MemberExpression.
2. Let func be GetValue(ref).
3. Let argList be the result of evaluating Arguments, producing an internal
list of argument values (see 11.2.4).
So func must be evaluated before the arguments and therefore in this
example the old Math.sqrt implementation should get invoked.
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