v8/test/mjsunit/regress/regress-490.js

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// See: http://code.google.com/p/v8/issues/detail?id=490

var kXXX = 11
// Build a string longer than 2^11. See StringBuilderConcatHelper and
// Runtime_StringBuilderConcat in runtime.cc and
// ReplaceResultBuilder.prototype.addSpecialSlice in string.js.
var a = '';
while (a.length < (2 << 11)) { a+= 'x'; }

// Test specific for bug introduced in r3153.
a.replace(/^(.*)/, '$1$1$1');

// More generalized test.
for (var i = 0; i < 10; i++) {
  var  b = '';
  for (var j = 0; j < 10; j++) {
    b += '$1';

    // TODO(machenbach): Do we need all these replacements? Wouldn't corner
    // cases like smallest and biggest suffice?
    a.replace(/^(.*)/, b);
  }
  a += a;
}