segfault writing to log from Lua (no replies)

I fired up HA-Proxy version 1.6-dev6-e7ae656 2015/09/28 for testing, and
was greeted with...

Segmentation fault (core dumped)

Since I've been primarily testing Lua, I started by commenting out my Lua
config lines. Startup succeeds. Re-enabling the scripts, I find this to
be the offending line:

core.Alert("hello.lua");

I can't seem to write to syslog in any Lua context without a segfault. The
failure occurs even if this is the only line, in the only Lua script loaded
in global config.

Behavior is observed on both 64-bit and 32-bit builds on Ubuntu 14.04.

HA-Proxy version 1.6-dev6-e7ae656