Alan Third wrote:

On Thu, May 18, 2017 at 09:46:55AM -0500, Pete Bonasso wrote:

1) start emacs.
2) ctrl-x l to start lisp in a *common-lisp* buffer (I use ACL 10.1)
3) click on any menu (e.g., edit, options, tools)
4) emacs will crash with the single line of output on the cmd line:
"objc[17271]: Invalid or prematurely-freed autorelease pool 0x104002140."

Hi Pete, thanks for reporting this.

Is there any chance you could try the master branch or a nightly
build? There have been a few crash fixes made in it.

Yes I can, but how do I do that? Right now I use:

brew install emacs --with-cocoa

which I thought gets the latest version.

FYI, the universal binary for the Mac, Emacs-25.2-universal.dmg, does NOT have this problem.
Pete