[Bug] Built-in PNG & JPEG patterns not working - "array expanded past end of the data" - even for provided test files

[miking7]

Operating System

MacOS

What's the issue you encountered?

The built-in PNG + JPEG patterns are throwing errors on all PNG or JPEG files I have tried (even the provided test files):

• Error: "array expanded past end of the data"

How can the issue be reproduced?

• Fresh (DMG) installation of ImHex on MacOS
• Download test PNG & JPEG files - ie: jpeg.hexpat.jpeg and png.hexpat.png from: https://github.com/WerWolv/ImHex-Patterns/tree/master/tests/patterns/test_data
• Open either of these files in ImHex.
• Accept the "png.hexpat" or "jpeg.hexpat" compatible pattern that pops up when file is opened.
• Pattern execution fails with runtime error: "Array expanded past end of the data". (PNG on line 117, JPEG on line 147 of their respective pattern files)

ImHex Version

1.33.2

ImHex Build Type

• Nightly or built from sources

Installation type

DMG

Additional context?

• Apple M1 MacBook Pro 2021, running Sonoma 14.3.1
• Similiar issue to this one (which pointed me to location of test files): How to use pattern syntax highlighting #1167 (comment)
• The desire for some context to debug this error has been highlighted here: [Feature] More information to debug "array expanded past end of the data" #758