Corinna Vinschen wrote:
> On Mar 13 17:30, Buchbinder, Barry (NIH/NIAID) [E] wrote:
>> I have a gawk script that I've been using unchanged for at least 9
>> months that seems to have broken with the transition from
>> gawk-3.1.5-2 to gawk-3.1.5-3.
>>
>> Gawk seemed to hang, though it might be merely very slow. I let it
>> run for hours before killing it. gawk-3.1.5-2 took 20-30 seconds to
>> run.
>
> Weird. The difference between gawk-3.1.5-2 and gawk-3.1.5-3 is in
> theory only the fact that -2 missed to make CRLF->LF conversion on
> stdin while -3 does CRLF->LF conversion.
>
>> This is the script, if that makes a difference. It is in the middle
>> of a pipe, receiving input from sort and giving output to another
>> instance of sort. Everything should have unix-style line-endings.
>> The pipe is running under ash. The script actually used a tab
>> character instead of the "\t" escape sequence. I changed it to "\t"
>> below in the hope that that might be easier to read in this email.
>>
>> gawk ' BEGIN { FS = OFS = "\t" }
>> {
>> Key = $2 "\t" $3 "\t" $4
>> InfoNew[Key] = $5
>> DateNew[Key] = $1
>> if (InfoOld[Key] == "") {
>> InfoOld[Key] = InfoNew[Key]
>> DateOld[Key] = DateNew[Key] }
>> if (InfoNew[Key] != InfoOld[Key]) {
>> print DateOld[Key], Key, InfoOld[Key]
>> InfoOld[Key] = InfoNew[Key]
>> DateOld[Key] = DateNew[Key] }
>> } END {
>> for (Key in InfoOld) {
>> print DateOld[Key], Key, InfoOld[Key] }
>> }'
>>
>> Do I need to send anything else?
>
> Can you embed this in a minimal testscript to reproduce the effect,
> together with a few lines (<10) of a typical input file?
>
> Corinna
>
> --
> Corinna Vinschen Please, send mails regarding Cygwin
> to
> Cygwin Project Co-Leader cygwin AT cygwin DOT com
> Red Hat
Sorry to have bothered you about this.
I did comparison tests with gawk-3.1.5-2 and gawk-3.1.5-3. Playing with
"print" statements I found that gawk was not hanging. Timing was not
consistently different between gawk-3.1.5-2 and gawk-3.1.5-3, so the
unexpectedly long run times must have been do to other reasons. (As
this is Windows, on a network, and I don't have admin privileges, its
hard to say what those other reasons might be.)
Anyway, I apologize again for having raised a false alarm.
And thanks for all the great work everyone has done on cygwin!
- Barry
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