RHEL6: bash dies with Segmentation fault, core_backtrace shows it died in "hash_flush"

Issue

• A bash script dies with Segmentation fault, ABRT report's core_backtrace file contains the following back trace

  {   "signal": 11
  ,   "executable": "/bin/bash"
  ,   "stacktrace":
        [ {   "crash_thread": true
          ,   "frames":
                [ {  [...]
                  ,   "function_name": "__libc_free"
                  ,   "file_name": "/lib64/libc.so.6"
                  }
                , {   [...]
                  ,   "function_name": "hash_flush"
                  ,   "file_name": "/bin/bash"
                  }
                , {   [...]
                  ,   "function_name": "assoc_dispose"
                  ,   "file_name": "/bin/bash"
                  }
                , {   [...]
                  ,   "function_name": "dispose_variable"
                  ,   "file_name": "/bin/bash"
                  }
                [...]