segfault with 3.0.3 on rhel 6.5

[Phil Mayers]

On 16/05/14 13:28, Arran Cudbard-Bell wrote:

>> I've added a line to the build matrix to build with -O2 and various env
>> variables which enabled extra checks in Malloc. Hopefully one of those
>> things will catch this sort of stupidity in future.

M_CHECK_ACTION=3 might be of interest too. But M_PERTURB is definitely a 
good "devel" action to have on.