657288 - TI: Assertion failure: offset < script->length, at ./jsanalyze.h:906

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on TI revision 693a36f402ee (run with -m -n -a),
tested on 64 bit:


new DoWhileObject;
function DoWhileObject(breakOut, breakIn, iterations, loops) {
    loops.prototype = new DoWhile;
    this.looping;
}
function DoWhile(object) {
    do {} while (object);
}

Comment 1

[Brian Hackett [Laid off!]]

When calling back into the interpreter, InternalInterpret (invoked by the interpoline) used JSINTERP_SAFEPOINT to skip the script prologue, but this also could cause the interpreter to fail to finish the entry frame.  This adds a JSINTERP_REJOIN mode which satisfies InternalInterpret's requirements --- the interpreter can start anywhere within the entry frame, but must finish it before returning.

http://hg.mozilla.org/projects/jaegermonkey/rev/3cd8666e409f

Comment 2

[Christian Holler (:decoder)]

A testcase for this bug was automatically identified at js/src/jit-test/tests/jaeger/recompile/bug657288.js.