Bug#1127025: libsdl-perl: autopkgtest regression with sdl12-compat 1.2.74

[Simon McVittie]

Source: libsdl-perl,sdl12-compat
Control: found -1 libsdl-perl/2.548-6
Control: found -1 sdl12-compat/1.2.74-1
Severity: serious
Tags: upstream forky sid
Justification: https://release.debian.org/testing/rc_policy.txt 6a
User: debian-ci at lists.debian.org
Usertags: breaks needs-update
Forwarded: https://github.com/libsdl-org/sdl12-compat/issues/391

After the recent update of sdl12-compat to 1.2.74, libsdl-perl is 
failing one of its autopkgtests (t/core_palette.t). The failing part is:

>my $disp = SDL::Video::set_video_mode( 640, 480, 8, SDL_SWSURFACE );
>
>SKIP:
>{
>
>	skip( 'Cannot open display: ' . SDL::get_error(), 4 ) unless ($disp);
>	isa_ok( $disp->format, 'SDL::PixelFormat', 'Are we a SDL::PixelFormat?' );
>
>	isa_ok(   ### THIS FAILS ###
>		$disp->format->palette, 'SDL::Palette',
>		'Palette is SDL::Palette when BitPerPixels is 8 '
>	);

The expected result is that $disp->format->palette is a palette object, 
the actual result is that it's undef (which I think maps to 
SDL_SetVideoMode(...)->format->palette == NULL in C).

It is not yet clear whether this is considered to be a regression in 
sdl12-compat, or an overly specific test assertion in libsdl-perl. I've 
asked SDL upstream.

libsdl-perl is a binding for an obsolete version of SDL (#1038083), but 
it's still used by two remaining games (frozen-bubble, pangzero) and one 
graphics demo (dizzy).

    smcv