rustc(4556,0x7fffcca583c0) malloc: *** malloc_zone_unregister() failed for 0x7fffcca4f548 on OSX 10.12 beta 2

[glandium]

Heads up: Running the rust compiler on OSX 10.12 beta 2 leads to the following error message:

rustc(4556,0x7fffcca583c0) malloc: *** malloc_zone_unregister() failed for 0x7fffcca4f548

Then the process gets stuck.

This roots from the malloc zone registration code in jemalloc 3, which is shared with Firefox's replace-malloc and causes the same issue on Firefox (https://bugzilla.mozilla.org/show_bug.cgi?id=1284677)

Filed jemalloc issue: jemalloc/jemalloc#420

[brson]

Thanks for the report! This is scheduled for release Thursday. @glandium is 10.12 beta 2 compatible with stable and/or nightly?

[brson]

Since this is an unreleased version of OS X, and the final release isn't scheduled until fall, I think it's not a pressing issue, but we should solve it for 1.11.

[brson]

Nominating because this is a high priority issue someone should investigate.