Re: unreliable value of LINENO variable

[Chet Ramey]

On 12/4/23 8:46 AM, Giacomo Comes wrote:
> I use often the value of LINEO in order
> to know where to look for issues in a script.
> Recently I discovered a bug.
>
> Please consider the following 6 line script:
> ------------------------------------------------
> #!/bin/bash
>
> if ((1)); then
>         ( : ) ; echo 1 $LINENO
> fi
> echo 2 $LINENO
> ------------------------------------------------
> if executed it should print:
> 1 4
> 2 6
> And indeed that's the output if I run it on openSUSE Leap 15.5
> (bash 4.4). However if I execute it on openSUSE tumbleweed
> (bash 5.2) the  output is:
> 1 4
> 2 5

I can't reproduce this. I get the correct (bash-4.4) results on bash-5.1
and bash-5.2. There does seem to be a problem with bash-5.0, but it was
corrected in bash-5.1, according to my results.

This is the case for both of your example scripts.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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