Fix "illegal access" when calling parseInt with a radix that is not a smi.

test/mjsunit/regress/regress-1246.js

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+
+// This regression tests the behaviour of the parseInt function when
+// the given radix is not a SMI.
+
+assertEquals(NaN, parseInt("", -0));
+assertEquals(23, parseInt("23", -0));
+assertEquals(0xaf, parseInt("0xaf", -0));
+assertEquals(NaN, parseInt("z", -0));
+
+assertEquals(NaN, parseInt("", -2));
+assertEquals(NaN, parseInt("23", -2));
+assertEquals(NaN, parseInt("0xaf", -2));
+assertEquals(NaN, parseInt("z", -2));
+
+assertEquals(NaN, parseInt("", 10.1));
+assertEquals(23, parseInt("23", 10.1));
+assertEquals(0, parseInt("0xaf", 10.1));
+assertEquals(NaN, parseInt("z", 10.1));
+
+assertEquals(NaN, parseInt("", "a"));
+assertEquals(23, parseInt("23", "a"));
+assertEquals(0xaf, parseInt("0xaf", "a"));
+assertEquals(NaN, parseInt("z", "a"));

[Lasse Reichstein, 2011/06/28 08:32:21]

Good tests.
How about also trying a string with a number (e.g. "10") as radix. 
And NaN and Infinity as radix (they should convert to 0 using ToInt32, so it
shoud work as base-10, but especially NaN can be tricky in comparisons).

[Steven, 2011/06/28 10:10:35]

I've included those cases and rewrote the tests by classifying the radix
argument values by which "radix mode" they will result in.
On 2011/06/28 08:32:21, Lasse Reichstein wrote: