656259 - TI: Assertion failure: !fe->data.inRegister(), at methodjit/FrameState-inl.h:909

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on TI revision fd1abc43d698 (run with -m -n -a),
tested on 64 bit:


function throwsRangeError(t) {
    try {
        t: for (t[t++] in object) {
            t++
            break t;
        }
        date(t)
    } catch (err) {}
}
throwsRangeError(Infinity);

Comment 1

[Brian Hackett [Laid off!]]

Oversight, we would allow register allocations at join points to assign FP registers to entries which weren't being tracked by the analysis (only possible in scripts with try or switch blocks), and which we don't require to match analysis information at join points.

http://hg.mozilla.org/projects/jaegermonkey/rev/2178344055f5

Comment 2

[Christian Holler (:decoder)]

A testcase for this bug was automatically identified at js/src/jit-test/tests/jaeger/bug656259.js.