Check if con_id exists in cmd_swap
(git commit 369c9ed50f2b9fc2dc904db07907cd5f95f0a5ad)
Set marks to NULL after freeing
realloc() was being called on an already freed pointer.
(git commit b48cbe42af94cf69700843922e57c68b81f3fddd)
Properly initialize sigaction struct
(git commit 09ee12d8e5e1cd219493fde3393dbca10c0cc23f)
1b8533228a