[Help-bash] Is there a way to make unamed pipe nonexist upon error?

[Peng Yu]

Hi,

awk does not know there is not a file called nosuchfile.txt because
the unnamed pipe looks OK. Is there a way to make the pipe
unavailable, so that awk knows there is some error with the file `f`?
Thanks.

$ awk -v f=<(cat nosuchfile.txt) -e 'BEGIN { r = getline < f ; print r }'
cat: nosuchfile.txt: No such file or directory
0

-- 
Regards,
Peng