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⭐ Starred 2013 / Test2::Util::Table
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CVE-2026-57432 (2026-07-13)

Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-of-bounds heap read in pack and unpack. S_measure_struct adds each item's size times its repeat count to a running total with no overflow check, so a large repeat count in a pack or unpack template wraps the signed SSize_t total negative. The @, X, and x position codes then guard their moves with a signed length comparison that passes when the length is negative, advancing the buffer pointer out of bounds. A template derived from untrusted input can read heap memory past the buffer and return it to the caller.

CVE-2026-8376 (2026-05-25)

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CVE-2026-13221 (2026-07-13)

Perl versions through 5.43.9 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

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CVE-2025-40909 (2025-05-30)

Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6

NAME

Test2::Util::Table - Format a header and rows into a table

DESCRIPTION

This is used by some failing tests to provide diagnostics about what has gone wrong. This module is able to generic format rows of data into tables.

SYNOPSIS

use Test2::Util::Table qw/table/;

my @table = table(
    max_width => 80,
    collapse => 1, # Do not show empty columns
    header => [ 'name', 'age', 'hair color' ],
    rows => [
        [ 'Fred Flinstone',  2000000, 'black' ],
        [ 'Wilma Flinstone', 1999995, 'red' ],
        ...,
    ],
);

# The @table array contains each line of the table, no newlines added.
say $_ for @table;

This prints a table like this:

+-----------------+---------+------------+
| name            | age     | hair color |
+-----------------+---------+------------+
| Fred Flinstone  | 2000000 | black      |
| Wilma Flinstone | 1999995 | red        |
| ...             | ...     | ...        |
+-----------------+---------+------------+

EXPORTS

@rows = table(...)

The function returns a list of lines, lines do not have the newline \n character appended.

Options:

header => [ ... ]

If you want a header specify it here. This takes an arrayref with each columns heading.

rows => [ [...], [...], ... ]

This should be an arrayref containing an arrayref per row.

collapse => $bool

Use this if you want to hide empty columns, that is any column that has no data in any row. Having a header for the column will not effect collapse.

max_width => $num

Set the maximum width of the table, the table may not be this big, but it will be no bigger. If none is specified it will attempt to find the width of your terminal and use that, otherwise it falls back to 80.

sanitize => $bool

This will sanitize all the data in the table such that newlines, control characters, and all whitespace except for ASCII 20 ' ' are replaced with escape sequences. This prevents newlines, tabs, and similar whitespace from disrupting the table.

Note: newlines are marked as '\n', but a newline is also inserted into the data so that it typically displays in a way that is useful to humans.

Example:

my $field = "foo\nbar\nbaz\n";

print join "\n" => table(
    sanitize => 1,
    rows => [
        [$field,      'col2'     ],
        ['row2 col1', 'row2 col2']
    ]
);

Prints:

+-----------------+-----------+
| foo\n           | col2      |
| bar\n           |           |
| baz\n           |           |
|                 |           |
| row2 col1       | row2 col2 |
+-----------------+-----------+

So it marks the newlines by inserting the escape sequence, but it also shows the data across as many lines as it would normally display.

mark_tail => $bool

This will replace the last whitespace character of any trailing whitespace with its escape sequence. This makes it easier to notice trailing whitespace when comparing values.

my $cols = term_size()

Attempts to find the width in columns (characters) of the current terminal. Returns 80 as a safe bet if it cannot find it another way.

NOTE ON UNICODE/WIDE CHARACTERS

Some unicode characters, such as 婧 (U+5A67) are wider than others. These will render just fine if you use utf8; as necessary, and Unicode::GCString is installed, however if the module is not installed there will be anomalies in the table:

+-----+-----+---+
| a   | b   | c |
+-----+-----+---+
| 婧 | x   | y |
| x   | y   | z |
| x   | 婧 | z |
+-----+-----+---+

SOURCE

The source code repository for Test2-Suite can be found at https://github.com/Test-More/Test2-Suite/.

MAINTAINERS

Chad Granum <exodist@cpan.org>

AUTHORS

Chad Granum <exodist@cpan.org>

COPYRIGHT

Copyright 2018 Chad Granum <exodist@cpan.org>.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://dev.perl.org/licenses/