Every time I make a change to the structure of the catalog files,
genbki.pl produces a bunch of warnings (like "Use of uninitialized value
in string eq at genbki.pl line ..."), and produces corrupted output
files, that are then (possibly) detected later by the compiler.  Also,
getting out of that is difficult because due to the complicated
dependency relationship between the involved files, you need to remove a
bunch of files manually, or clean everything.  So error handling could
be better.

It seems that adding

diff --git a/src/backend/catalog/genbki.pl b/src/backend/catalog/genbki.pl
index ebc4825..7d66da9 100644
--- a/src/backend/catalog/genbki.pl
+++ b/src/backend/catalog/genbki.pl
@@ -19,6 +19,8 @@
 use strict;
 use warnings;
 
+local $SIG{__WARN__} = sub { die $_[0] };
+
 my @input_files;
 our @include_path;
 my $output_path = '';

would address that.

Could that cause any other problems?  Should it be added to all Perl
scripts?



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