xref: /external/v8/test/mjsunit/regress/regress-create-exception.js

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// Flags: --max-new-space-size=256
"use strict";

// Check for GC bug constructing exceptions.
var v = [1, 2, 3, 4]

Object.preventExtensions(v);

function foo() {
  var re = /2147483647/;  // Equal to 0x7fffffff.
  for  (var i = 0; i < 10000; i++) {
    var ok = false;
    try {
      var j = 1;
      // Allocate some heap numbers in order to randomize the behaviour of the
      // garbage collector.  93 is chosen to be a prime number to avoid the
      // allocation settling into a too neat pattern.
      for (var j = 0; j < i % 93; j++) {
        j *= 1.123567;  // An arbitrary floating point number.
      }
      v[0x7fffffff] = 0;  // Trigger exception.
      assertTrue(false);
      return j;  // Make sure that future optimizations don't eliminate j.
    } catch(e) {
      ok = true;
      assertTrue(re.test(e), 'e: ' + e);
    }
    assertTrue(ok);
  }
}

foo();