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Groups > linux.debian.bugs.dist > #1270847

Bug#939155: libgnustep-gui0.27: Uses GifQuantizeBuffer - binary stops working with newer giflib

From Yavor Doganov <yavor@gnu.org>
Newsgroups linux.debian.bugs.dist
Subject Bug#939155: libgnustep-gui0.27: Uses GifQuantizeBuffer - binary stops working with newer giflib
Date 2025-11-19 20:30 +0100
Message-ID <LSW2l-ecvi-1@gated-at.bofh.it> (permalink)
References <yBBd7-1PT-5@gated-at.bofh.it> <LSlm9-dNuJ-1@gated-at.bofh.it> <LSJRw-e4fH-3@gated-at.bofh.it> <yBBd7-1PT-5@gated-at.bofh.it> <LSJRw-e4fH-3@gated-at.bofh.it>
Organization The GNU Emacs Church (Bulgarian Eparchy)

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Control: severity -1 minor
Control: retitle -1 gnustep-gui: NSBitmapImageRep -representationUsingType:properties: will return nil for GIF with newer giflib

Andreas Metzler wrote:
> On 2025-11-18 Yavor Doganov <yavor@gnu.org> wrote:
> > $ objdump -T /usr/lib/x86_64-linux-gnu/libgif.so.7.2.0 | grep GifQuantizeBuffer
> > 00000000000069d0 g    DF .text	0000000000000707  Base        GifQuantizeBuffer
> 
> > Right?
> 
> Upstream giflib has dropped the symbol. The Debian packages have been
> patched to re-introduce it.

Oh, thanks for the pointer.  I took a closer look and it's an
obscure feature lost which is already marked as experimental and
basically unused.  GNUstep upstream is aware of the change in giflib.

To verify, I rebuilt giflib with

  revert-GifQuantizeBuffer-remove-from-lib.patch
  giflib_quantize-header.patch

removed and GifQuantizeBuffer deleted from the .symbols file.  Then
rebuilt gnustep-gui and installed the library package.  Viewing GIF
files with preview.app and price.app works and that's what is
important.

So you can safely exclude gnustep-gui from the list of problematic
packages that are affected by this change.

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Thread

Bug#939155: libgnustep-gui0.27: Uses GifQuantizeBuffer - binary stops working with newer giflib Yavor Doganov <yavor@gnu.org> - 2025-11-18 05:20 +0100
  Bug#939155: libgnustep-gui0.27: Uses GifQuantizeBuffer - binary stops working with newer giflib Andreas Metzler <ametzler@bebt.de> - 2025-11-19 07:30 +0100
    Bug#939155: libgnustep-gui0.27: Uses GifQuantizeBuffer - binary stops working with newer giflib Yavor Doganov <yavor@gnu.org> - 2025-11-19 20:30 +0100

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