Comment 2 for bug 946401

StacktraceTop:
 _IO_vfprintf_internal (s=0x9e6980, format=<optimized out>, ap=0xbfbfc478 "\b.\227\b") at vfprintf.c:1621
 ___vfprintf_chk (fp=0x9e6980, flag=1, format=0xb7454cb1 <Address 0xb7454cb1 out of bounds>, ap=0xbfbfc474 "\177\003\377\377\b.\227\b") at vfprintf_chk.c:35
 vfprintf (__ap=0xbfbfc474 "\177\003\377\377\b.\227\b", __fmt=0xb7454cb1 <Address 0xb7454cb1 out of bounds>, __stream=<optimized out>) at /usr/include/i386-linux-gnu/bits/stdio2.h:128
 builtin_error (format=0xb7454cb1 <Address 0xb7454cb1 out of bounds>) at ../../bash/builtins/common.c:122
 fg_builtin (list=0x0) at ../../bash/builtins/../../bash/builtins/fg_bg.def:68