Bug 1952

https://groups.google.com/d/msg/ns-3-users/w__FyRKm564/NokUnR6eWS4J

1. I've compiled bash 4.1 (and 4.3, but 4.1 seems to have been the one originally used in the examples) with the needed -fPIC and -pie flags
  using the hints given in the example/bash/dce-bash-simple.cc
2. Checked if the executable is now dynamic, using readelf

3. run the example: './waf --run dce-bash-simple --command-template="gdb --args %s "' but a sigsegv is given:

The reason of this crash is due to the fact that DCE doesn't pass envp argument (3rd one) of main function, resulting bash accesses uninitialized memory area making him crash.