724999 - IonMonkey: Assertion failure: !entered && i < mLength, at ./dist/include/js/Vector.h:373

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on ionmonkey revision c34398f961e7 (run with --ion -n -m), tested on 64 bit:


function nsieve(m, isPrime){
   for (i=2; i<=m; (g.args[i])){
         for (k=i+i; k<=m; k+=i) isPrime[k] = false;
      break;
   }
}
var ret = 0;
    for (var i = 1; i <= 3; i++ ) {
        var m = (1<<i)*10000;
        var flags = Array(m+(0XeE0c  ));
        ret += nsieve(m, flags);
}

Comment 1

[Jan de Mooij [:jandem]]

Attachment: Patch

Missing some cases for for-loops in IonBuilder::isLoop. Patch fixes the test and passes jit-tests. Surprising that this didn't cause jit-test failures.

Comment 2

[Jan de Mooij [:jandem]]

http://hg.mozilla.org/projects/ionmonkey/rev/6916659b5ba5

Comment 3

[Christian Holler (:decoder)]

A testcase for this bug was automatically identified at js/src/jit-test/tests/ion/bug724999.js.