[bug-gawk] bug report on PROCINFO[,"READ_TIMEOUT"]

[Alejandro Mendoza]

Hi,
I just encountered a bug with the PROCINFO[,"READ_TIMEOUT"] feature.

It happens in version 4.1.1 and 4.1.10, running under slackware linux 
4.x. I have not tested gawk version 4.1.2 since I haven't upgraded it.

If a timeout occurs on reading (stdin, file or network), a subsequent 
reading aborts immediately (no timeout), even after changing the timeout 
value.

The bug is very simple to replicate, this very short code typed at the 
command line can show it:

awk 'BEGIN {infile="/dev/stdin"; PROCINFO[infile,"READ_TIMEOUT"]=2000; 
getline    < infile; print "read 1: " $0; print "next input"; $0=""; 
PROCINFO[infile,"READ_TIMEOUT"]="5000";getline <infile; print "read 2: " 
$0}'

If I let the first read to time out, the second aborts immediately (even 
if I set it to 0 to wait forever). If I type something and hit <enter> 
before timing out, the second read works as it should.

Best Regards,

--
Alex Mendoza