read with -a sets wrong variable name

[SATOH Fumiyasu]

Configuration Information [Automatically generated, do not change]:
Machine: i386
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DSHELL -DHAVE_CONFIG_H  -I.  -I../bash -I../bash/include 
-I../bash/lib  -g -O2
uname output: Linux sugar 2.4.24-xfs-fumiya-1 #1 Mon Jan 19 21:55:52 JST 2004 
i686 GNU/Linux
Machine Type: i386-pc-linux-gnu

Bash Version: 2.05b
Patch Level: 0
Release Status: release

Description:
        The read shell builtin command with -a option does not check
        if specified variable name is valid or not.

Repeat-By:
        $ echo XXXX | (read " foo bar"; set |grep XXXX)
        -bash: read: ` foo bar': not a valid identifier

        $ echo XXXX | (read -a " foo bar"; set |grep XXXX)
         foo bar=([0]="XXXX")