Some bugs in bash detected by cppcheck, splint and our own tool

[flaviomotamedeiros]

We have analyzed the bash source code using tools, such as cppcheck, splint and 
our own tool, and foound the following possible problems.

FILE: bash/lib/readline/input.c/v1-input.c      
LINE: 267       
MSG: Uninitialized variable: input
CONFIG: !O_NDELAY

FILE: bash/lib/sh/strftime.c/v1-strftime.c      
LINE: 228       
MSG: Common realloc mistake: 'savetz' nulled but not freed upon failure
CONFIG: POSIX_SEMANTICS

fILE: bash/execute_cmd.c        
LINE: 5163      
MSG: Null pointer dereference
CONFIG: __CYGWIN__


FILE: bash/subst.c      
LINE: 5362 
MSG: Null pointer dereference
CONFIG: __CYGWIN__

Regards,
Flávio Medeiros