JuliaLang/julia — pull request #1787 by rened (2012-12-19 12:08:12+00:00)
Title: Fix segfault in REPL tab completion on OSX

On OSX, hitting TAB after having entered ```sum(``` would result in a
segmentation fault. (Curiously, on linux this would not cause any
problems).

Adding a check for name!=NULL in repl-readline.c fixed the problem.