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.

// Flags: --allow-natives-syntax

var nonSmi10 = Math.log(Math.exp(10));
var nonSmi16 = Math.log(Math.exp(16));

assertTrue(!%_IsSmi(nonSmi10) && nonSmi10 == 10);
assertTrue(!%_IsSmi(nonSmi16) && nonSmi16 == 16);

// Giving these values as the radix argument triggers radix detection.
var radix_detect = [0, -0, NaN, Infinity, -Infinity, undefined, null,
                    "0", "-0", "a"];

// These values will result in an integer radix outside of the valid range.
var radix_invalid = [1, 37, -2, "-2", "37"];

// These values will trigger decimal parsing.
var radix10 = [10, 10.1, "10", "10.1", nonSmi10];

// These values will trigger hexadecimal parsing.
var radix16 = [16, 16.1, 0x10, "0X10", nonSmi16];

for (var i = 0; i < radix_detect.length; i++) {
  var radix = radix_detect[i];
  assertEquals(NaN, parseInt("", radix));
  assertEquals(23, parseInt("23", radix));
  assertEquals(0xaf, parseInt("0xaf", radix));
  assertEquals(NaN, parseInt("af", radix));
}

for (var i = 0; i < radix_invalid.length; i++) {
  var radix = radix_invalid[i];
  assertEquals(NaN, parseInt("", radix));
  assertEquals(NaN, parseInt("23", radix));
  assertEquals(NaN, parseInt("0xaf", radix));
  assertEquals(NaN, parseInt("af", radix));
}

for (var i = 0; i < radix10.length; i++) {
  var radix = radix10[i];
  assertEquals(NaN, parseInt("", radix));
  assertEquals(23, parseInt("23", radix));
  assertEquals(0, parseInt("0xaf", radix));
  assertEquals(NaN, parseInt("af", radix));
}

for (var i = 0; i < radix16.length; i++) {
  var radix = radix16[i];
  assertEquals(NaN, parseInt("", radix));
  assertEquals(0x23, parseInt("23", radix));
  assertEquals(0xaf, parseInt("0xaf", radix));
  assertEquals(0xaf, parseInt("af", radix));
}