"HISTSIZE=999999999" cause bash failure after lastest upgrade

[Sean Zha]

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  -Wdate-time 
-D_FORTIFY_SOURCE=2 -g -O2 -fdebug-prefix-map=/build/bash-31ueiH/bash-4.4=. 
-fstack-protector-strong -Wformat -Werror=format-security -Wall 
-Wno-parentheses -Wno-format-security
uname output: Linux kali 4.6.0-kali1-amd64 #1 SMP Debian 4.6.4-1kali1 
(2016-07-21) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 4.4
Patch Level: 0
Release Status: release

Description:
        I use a huge value for HISTSIZE (=999999999) to enable infinite
        history items. The actural size of ~/.bash_history is only 4MB now.
        Everything worked fine before the lastest upgrade. Now bash refuse
        me to login due to memory allocation failure. After choosing
        a smaller HISTSIZE, bash still eatup too much unnesssary memory.

Repeat-By:
        open a workable terminal with small HISTSIZE setting,
        $ echo HISTSIZE=999999999 > ~/test.rc
        $ bash --rcfile ~/test.rc
          bash: xmalloc: cannot allocate 8000000008 bytes (114688 bytes 
allocated)