`-Wincompatible-pointer-types` is now an error

[Narrat]

Hi,
GCC seems to have adjusted their handling with -Wincompatible-pointer-types. What has been a warning is now an error:

src/bimp-manipulations-gui.c: In function ‘bimp_open_editwindow’:
src/bimp-manipulations-gui.c:48:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_resize_set *)’ [-Wincompatible-pointer-types]
   48 |         save = &bimp_resize_save;
      |              ^
src/bimp-manipulations-gui.c:52:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_crop_set *)’ [-Wincompatible-pointer-types]
   52 |         save = &bimp_crop_save;
      |              ^
src/bimp-manipulations-gui.c:56:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_fliprotate_set *)’ [-Wincompatible-pointer-types]
   56 |         save = &bimp_fliprotate_save;
      |              ^
src/bimp-manipulations-gui.c:60:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_color_set *)’ [-Wincompatible-pointer-types]
   60 |         save = &bimp_color_save;
      |              ^
src/bimp-manipulations-gui.c:64:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_sharpblur_set *)’ [-Wincompatible-pointer-types]
   64 |         save = &bimp_sharpblur_save;
      |              ^
src/bimp-manipulations-gui.c:68:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_changeformat_set *)’ [-Wincompatible-pointer-types]
   68 |         save = &bimp_changeformat_save;
      |              ^
src/bimp-manipulations-gui.c:72:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_watermark_set *)’ [-Wincompatible-pointer-types]
   72 |         save = &bimp_watermark_save;
      |              ^
src/bimp-manipulations-gui.c:76:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_rename_set *)’ [-Wincompatible-pointer-types]
   76 |         save = &bimp_rename_save;
      |              ^
src/bimp-manipulations-gui.c:80:14: error: assignment to ‘void (*)(void *)’ from incompatible pointer type ‘void (*)(struct manip_userdef_set *)’ [-Wincompatible-pointer-types]
   80 |         save = &bimp_userdef_save;
      |              ^

[jeffbzrr]

Same problem here.
Add -fcommon in makefile dont work

[doing-science]

Adding "-fpermissive" to the end of the CFLAGS line in the Makefile allowed me to compile.

CFLAGS += $(GIMP_CFLAGS) -Wall -Wno-unused-variable -Wno-pointer-sign -DGIMP_DISABLE_DEPRECATED -fpermissive

[biopsin]

What gcc version is this? I build with v.13.2 for x86_64-libc and I cant trigger it.
Also closes pull #412

[doing-science]

What gcc version is this? I build with v.13.2 for x86_64-libc and I cant trigger it. Also closes pull #412

I'm using gcc 14.1.1 20240720

See the '-fpermisive' section here: https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html which specifically mentions '-Wincompatible-pointer-types'

[jeffbzrr]

hi guys, thanks so much but i install using flatpak