/usr/lib64/libSDL2_image-2.0.so.0.2.3 from SDL2_image-2.0.5-7.fc35.x86_64 fails an abidiff test with the current trunk as of 8c22f5fdc91d010cefe6ba5c1078d0771d3dcd75

Starting program: /home/ben/Shared/Work/test/libabigail-x86_64/bin/abidw --abidiff /usr/lib64/libSDL2_image-2.0.so.0.2.3
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Functions changes summary: 0 Removed, 4 Changed, 0 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

4 functions with some indirect sub-type change:

  [C] 'function int IMG_isGIF(SDL_RWops*)' at IMG_gif.c:31:1 has some indirect sub-type changes:

  [C] 'function int IMG_isLBM(SDL_RWops*)' at IMG_lbm.c:58:1 has some indirect sub-type changes:

  [C] 'function int IMG_isPCX(SDL_RWops*)' at IMG_pcx.c:60:1 has some indirect sub-type changes:

  [C] 'function int IMG_isXV(SDL_RWops*)' at IMG_xv.c:82:1 has some indirect sub-type changes:

[Inferior 1 (process 306257) exited with code 01]
No stack.

Not much to go on here.