Test failure avif/compare_avif_to_png with libavif-0.8.2

[remicollet]

GD Warning: avif error - Could not parse image: Truncated dataavif/compare_avif_to_png.c:52: baboon: gdImageCreateFromAvifPtr failed
GD Warning: avif error - Could not parse image: Truncated dataavif/compare_avif_to_png.c:52: dice_with_alpha: gdImageCreateFromAvifPtr failed
GD Warning: avif error - Could not parse image: Truncated dataavif/compare_avif_to_png.c:52: plum_blossom_12bit: gdImageCreateFromAvifPtr failed
GD Warning: avif error - Could not parse image: Truncated dataavif/compare_avif_to_png.c:52: sunset: gdImageCreateFromAvifPtr failed
FAIL avif/compare_avif_to_png (exit status: 4)

[remicollet]

Seems related to libavif version used

• fails on Fedora 33 with version 0.8.2
• passes on Fedora 34 with version 0.8.4

[vapier]

@morsssss want to increase the requirement to 0.8.4 and call it a day?

[morsssss]

Mayyyyybe. I'm looking at distros, and if we bump up to 0.8.4:

• for Debian, buster has 0.7, buster-backports has 0.8.2, and as of bullseye it's 0.8.4.
• For Ubuntu, it doesn't matter - Xenial has 0.7, and hirsute has 0.8.4.

For Fedora, of course, it would be nice if we supported 33.

Let me see if I can quickly find out what might have changed between 0.8.2 and 0.8.4 - but I won't spend too much time on it - especially given your suggestion :)

[morsssss]

Separately, @remicollet , I started talking to PHP project maintainers this weekend about introducing this support into PHP. It looks like you're quite involved in PHP! Let me know if you have interest here....

[morsssss]

@wantehchung and I have a simple patch that, at least in his tests, makes this work on v0.8.2. I will submit it.