> cat /proc/sys/kernel/randomize_va_space
> 
> If you get something different from 0, try
> 
> echo 0|sudo tee /proc/sys/kernel/randomize_va_space
> 
> and then do repeated experiments.  I think that it's quite likely things
> will be more repeatable after that.

Maybe it also helps to set the following environment variables:

  MALLOC_PERTURB_=69
  MALLOC_CHECK_=3

(MALLOC_PERTURB seems not to be documented;
cf. https://bugzilla.redhat.com/show_bug.cgi?id=615050).


    Werner

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