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  1. Core Server
  2. SERVER-5379

js increment operators (ob.prop += ob2.prop) do not work, after assigment like this ob = ob2

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: 2.0.3, 2.1.0
    • Fix Version/s: None
    • Component/s: JavaScript
    • Labels:
      None
    • Environment:
      I think in all environment, but my is "Linux azat 2.6.38custom1.0 #1 SMP Mon May 23 17:17:08 MSD 2011 x86_64 GNU/Linux"
    • Operating System:
      ALL

      Description

      /**
       * js increment operators (ob.prop += ob2.prop) do not work, after assigment like this ob = ob2
       * 
       * Affected versions:	r2.1.0-1580-g0c1a6bd (v8)
       * 				v8 engine: Version 3.9.23
       * 
       * 				2.0.3-1 (spider monkey)
       */
       
      db.eval(function() {
      	var ob2 = null;
      	var ob1 = {foo: 1};
      	ob2 = ob1;
      	// if uncomment, than works
      // 	ob2 = {};
      // 	for (i in ob1) {
      // 		ob2[i] = ob1[i];
      // 	}
       
      	ob2.foo += ob1.foo;
      	assert(2 == ob2.foo, "increment #2, must be: 2");
      	assert(ob2.foo == (1 + ob1.foo), "increment #1, must be: " + ob2.foo);
      	return ob2.foo;
      });

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              Assignee:
              Unassigned
              Reporter:
              azat Azat Khuzhin
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                Created:
                Updated:
                Resolved: