Package: emacs
Version: 24.4.50

Current trunk on x86_64 RHEL 6.5 GNU/Linux:

emacs -Q
C-h f menu-bar-update-buffers RET

Jump to definition in menu-bar.el.

C-u M-x deval-defun

Edebug triggers immediately.

SPC SPC SPC

-> crash after evaluating "current-global-map"

No such crash in 24.3.92.

Backtrace attached.