[4.x]: Division by zero

[kringkaste]

What happened?

Description

If you have an image with a very small and a very large side at the same time (like 1x200px), the Image::calculateMissingDimension() creates a targetWidth of 0 and then the Raster::scaleAndCrop() generates a Division by Zero on line 330 (Craft 4.4.17). The round() function in Image::calculateMissingDimension() produces a 0 and it should always return a minimum of 1.

Steps to reproduce

1. Upload an image of 1x200px or something like that to a folder and the thumbnail generation produces the error.

Expected behavior

A thumbnail of the image or a fall back image.

Actual behavior

Division by zero.

Craft CMS version

4.4.17

PHP version

8.1

Operating system and version

No response

Database type and version

No response

Image driver and version

No response

Installed plugins and versions

[i-just]

Hi, thanks for reporting! I raised a PR to adjust this.

[brandonkelly]

Fixed for the next release via #13719.

[brandonkelly]

Craft 4.5.6 is out now with that fix.