Bash autocomplete, results in unresponsiveness

[Yakup]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H   -I.  -I../. -I.././include -I.././lib 
-D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong -Wformat
-Werror=format-security -Wall
uname output: Linux debby 3.16.0-7-amd64 #1 SMP Debian 3.16.59-1
(2018-10-03) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 4.3
Patch Level: 30
Release Status: release

Description:
    Bash gets unresponsive when trying to autocomplete within the
`pmount` command.
    Bash gets responsive again, after canceling the autocomplete `C-c`.
So I can write again, but as soon as I try to autocomplete, it freezes
again. So something is broken with autocomplete using the `pmount`
command.   

Repeat-By:
    Type: pmount /dev/sd[TAB]   // autocomplete
    Type: pmount [TAB] // autocomplete


Best regards,
Yakup

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