Perl stopped working

Thu Apr 17 15:52:43 GMT 2025

After running cygwin-setup and updating all cygwin-packages, perl no longer seems to work (or maybe a coincidence).
Executing "perl" without any argument normally let perl wait for input from stdin/keyboard.
But it immediately returns to the prompt (same behavior as 'echo ""').
I can do
perl
perl -v
perl -e 'print "Hello Perl\n"'
same result for all 3 of them (equal to 'echo ""').
$ which perl
/usr/bin/perl
$ file `which perl`
/usr/bin/perl: PE32+ executable (console) x86-64, for MS Windows, 12 sections
$ cygcheck -c perl
Cygwin Package Information
Package              Version    Status
perl                 5.40.2-1       OK
downgraded to previous version - same result.
$ cygcheck -c perl
Cygwin Package Information
Package              Version    Status
perl                 5.40.1-1       OK
executing e.g. sed or awk return the "Usage:"-page as normal
any idea?