Problem with declare -a using a subcommand that parses data containing ctrl-A characters.

Fri, 05 Jan 2007 22:50:08 -0800 

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux
Compiler: gcc -I/usr/src/packages/BUILD/bash-3.1
-L/usr/src/packages/BUILD/bash-3.1/../readline-5.1
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux' -DCONF_MACHTYPE='x86_64-suse-linux'
-DCONF_VENDOR='suse' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib   -O2
-fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -g -D_GNU_SOURCE
-DRECYCLES_PIDS -Wall -pipe -g -fbranch-probabilities
uname output: Linux mahler 2.6.16.21-0.8-smp #1 SMP Mon Jul 3 18:25:39
UTC 2006 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-suse-linux

Bash Version: 3.1
Patch Level: 17
Release Status: release

Description:
        Not sure if this is a change to how things are to be done or a 
        bug. I've attached my test files and original bbug1 file.
        I think the ctrl-as are giving my mailer a fit so bashbug didn't
        send. Sorry if I'm including the same info twice.

        When creating an array and populating it with a subcommands
        output there has been a change between version 
        2.05b.0(1) and 3.1.17(1)
        such that if your subcommands generate/parse ctrl-A data 
        the array is not populated as before.

        When creating an array and populating it with a subcommands
        output there has been a change between 
        version 2.05b.0(1) and 3.1.17(1)
        such that if your subcommands generate/parse ctrl-A data 
        the array is not populated as before.

        ie:

t='mhost110.2.2.12/10.2.2.11TCP000ALIVE200000000010.2.2.1110.2.2.121
mhost1/dev/ttyS1TTY38400349350ALIVE0020000204541645384(null)(null)99
'
declare -a COM=($(echo $t | head -n1 | awk -F '{print $1,$2,$3}'))

        does not work under 3.1.17(1) but does under 2.05b.0(1)

        Both version works the same without the ctrl-As 
        ie:


t1='mhost1:10.2.2.12/10.2.2.11:TCP:0:0:0:ALIVE:2:0:0:0:0:0:0:0:0:0:10.2.2.11:10.2.2.12:1
mhost1:/dev/ttyS1:TTY:38400:349:350:ALIVE:0:0:2:0:0:0:0:20:48892:48812:(null):(null):99'

declare -a COMC=($(echo $t1 | head -n1 | awk -F: '{print $1,$2,$3}'))
        

Repeat-By:


#!/bin/bash

#
# Test created by David B. Anderson dbanders @ gmail dot com
#

echo "Testing with: " 
bash --version

echo " "
echo "Testing bash array declare using the output of a subshell that
contains control A characters."
t='mhost110.2.2.12/10.2.2.11TCP000ALIVE200000000010.2.2.1110.2.2.121
mhost1/dev/ttyS1TTY38400349350ALIVE0020000204541645384(null)(null)99
'

declare -a COM=($(echo $t | head -n1 | awk -F'' '{print $1,$2,$3}'))
echo "COM 0: should be 'mhost1'              is '${COM[0]}'"
echo "COM 1: should be '10.2.2.12/10.2.2.11' is '${COM[1]}'"
echo "COM 2: should be 'TCP'                 is '${COM[2]}'"

if [ "x${COM[0]}" != "xmhost1" ]; then
    echo "TEST: FAILED"
else
    echo "TEST: PASSED"
fi

echo ""
echo "Testing bash array declare using the output of a subshell that
contains is the same as above with ':' instead of control A characters."
t1='mhost1:10.2.2.12/10.2.2.11:TCP:0:0:0:ALIVE:2:0:0:0:0:0:0:0:0:0:10.2.2.11:10.2.2.12:1
mhost1:/dev/ttyS1:TTY:38400:349:350:ALIVE:0:0:2:0:0:0:0:20:48892:48812:(null):(null):99'

declare -a COMC=($(echo $t1 | head -n1 | awk -F: '{print $1,$2,$3}'))
echo "COMC 0: should be 'mhost1'              is '${COMC[0]}'"
echo "COMC 1: should be '10.2.2.12/10.2.2.11' is '${COMC[1]}'"
echo "COMC 2: should be 'TCP'                 is '${COMC[2]}'"

if [ "x${COMC[0]}" != "xmhost1" ]; then
    echo "TEST: FAILED"
else
    echo "TEST: PASSED"
fi
--- Begin Message --- 
Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux
Compiler: gcc -I/usr/src/packages/BUILD/bash-3.1 
-L/usr/src/packages/BUILD/bash-3.1/../readline-5.1
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' 
-DCONF_OSTYPE='linux' -DCONF_MACHTYPE='x86_64-suse-linux' -DCONF_VENDOR='suse' 
-DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  
-I. -I./include -I./lib   -O2 -fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -g 
-D_GNU_SOURCE -DRECYCLES_PIDS -Wall -pipe -g -fbranch-probabilities
uname output: Linux mahler 2.6.16.21-0.8-smp #1 SMP Mon Jul 3 18:25:39 UTC 2006 
x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-suse-linux

Bash Version: 3.1
Patch Level: 17
Release Status: release

Description:

        Not sure if this is a change to how things are to be done or a 
        bug. 

        When creating an array and populating it with a subcommands
        output there has been a change between version 
        2.05b.0(1) and 3.1.17(1)
        such that if your subcommands generate/parse ctrl-A data 
        the array is not populated as before.

        When creating an array and populating it with a subcommands
        output there has been a change between 
        version 2.05b.0(1) and 3.1.17(1)
        such that if your subcommands generate/parse ctrl-A data 
        the array is not populated as before.

        ie:
        
t='mhost110.2.2.12/10.2.2.11TCP000ALIVE200000000010.2.2.1110.2.2.121
mhost1/dev/ttyS1TTY38400349350ALIVE0020000204541645384(null)(null)99
'
        declare -a COM=($(echo $t | head -n1 | awk -F '{print $1,$2,$3}'))

        does not work under 3.1.17(1) but does under 2.05b.0(1)

        Both version works the same without the ctrl-As 
        ie:

        
t1='mhost1:10.2.2.12/10.2.2.11:TCP:0:0:0:ALIVE:2:0:0:0:0:0:0:0:0:0:10.2.2.11:10.2.2.12:1
mhost1:/dev/ttyS1:TTY:38400:349:350:ALIVE:0:0:2:0:0:0:0:20:48892:48812:(null):(null):99'

        declare -a COMC=($(echo $t1 | head -n1 | awk -F: '{print $1,$2,$3}'))
        

Repeat-By:


#!/bin/bash

#
# Test created by David B. Anderson dbanders @ gmail dot com
#

echo "Testing with: " 
bash --version

echo " "
echo "Testing bash array declare using the output of a subshell that contains 
control A characters."
t='mhost110.2.2.12/10.2.2.11TCP000ALIVE200000000010.2.2.1110.2.2.121
mhost1/dev/ttyS1TTY38400349350ALIVE0020000204541645384(null)(null)99
'

declare -a COM=($(echo $t | head -n1 | awk -F'' '{print $1,$2,$3}'))
echo "COM 0: should be 'mhost1'              is '${COM[0]}'"
echo "COM 1: should be '10.2.2.12/10.2.2.11' is '${COM[1]}'"
echo "COM 2: should be 'TCP'                 is '${COM[2]}'"

if [ "x${COM[0]}" != "xmhost1" ]; then
    echo "TEST: FAILED"
else
    echo "TEST: PASSED"
fi

echo ""
echo "Testing bash array declare using the output of a subshell that contains 
is the same as above with ':' instead of control A characters."
t1='mhost1:10.2.2.12/10.2.2.11:TCP:0:0:0:ALIVE:2:0:0:0:0:0:0:0:0:0:10.2.2.11:10.2.2.12:1
mhost1:/dev/ttyS1:TTY:38400:349:350:ALIVE:0:0:2:0:0:0:0:20:48892:48812:(null):(null):99'

declare -a COMC=($(echo $t1 | head -n1 | awk -F: '{print $1,$2,$3}'))
echo "COMC 0: should be 'mhost1'              is '${COMC[0]}'"
echo "COMC 1: should be '10.2.2.12/10.2.2.11' is '${COMC[1]}'"
echo "COMC 2: should be 'TCP'                 is '${COMC[2]}'"

if [ "x${COMC[0]}" != "xmhost1" ]; then
    echo "TEST: FAILED"
else
    echo "TEST: PASSED"
fi

--- End Message ---

Attachment: t1.test.sh
Description: application/shellscript

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