This same program seg fault with MySQL. SQL statements are slightly modified to satisfy mySQL syntax. Tested on Windows XP.

use strict;
use warnings;
use Test::More tests => 4;
use DBI;

my $database = 'allwords.sqlite-v3';
unlink $database;

my( %forward, %backward );
my $dbh = DBI->connect( "DBI:mysql:test",
                        '', '',
                        { RaiseError => 1,
                          AutoCommit => 0 }
);

#diag "Using DBD::SQLite $DBD::SQLite::VERSION";

diag "Creating database\n";
my @words = split /\s+/, <DATA>;
@forward{ @words } = reverse @words;
#$dbh->do('drop table wordtable');

diag "Creating word-pair database...\n";
$dbh->do('create table wordtable(a varchar(10),b varchar(10))');
my $sth = $dbh->prepare(
            "INSERT INTO wordtable(a, b) VALUES ( ?, ? )"
);
while ( my( $left, $right ) = each %forward ) {
            $sth->execute( $left, $right );
}
$sth->finish;
$dbh->commit;
diag "Database created.\n";

diag "Selecting (static value, 1st)\n";
my $value;
$sth = $dbh->prepare( "SELECT b FROM wordtable WHERE a = 'shine'" );

undef $value;
eval {
  $value = $dbh->selectrow_array( $sth,
                                   {},
            );
};
is( $value, 'shine', 'Got "shine"');

diag "Selecting (static value, 2nd)\n";
undef $value;
eval {
  $value = $dbh->selectrow_array( $sth,
                                {},
         );
};
is( $value, 'shine', "Got 'shine' and didn't crash");

diag "Selecting (placeholder, 1st round)\n";
my $value;
$sth = $dbh->prepare( "SELECT b FROM wordtable WHERE a = ?" );

undef $value;
eval {
  $value = $dbh->selectrow_array( $sth,
                                   {},
                                   'shine'
            );
};
diag $@ if $@;
is( $value, 'shine', 'Got "shine"');

# This one crashes
diag "Selecting (placeholder, 2nd round)\n";
undef $value;
eval {
  $value = $dbh->selectrow_array( $sth,
                                {},
                                   'shine'
         );
};
diag $@ if $@;
is( $value, 'shine', "Got 'shine' and didn't crash");

$sth->finish();
$dbh->disconnect();
__DATA__
shine    shine

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In reply to Re: New way to segfault: selectrow_array() with placeholders, DBD::SQLite by pg
in thread New way to segfault: selectrow_array() with placeholders, DBD::SQLite by davido

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