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[Romano Giannetti <romano.giannetti@xxxxxxxxx>]

I compiled ufraw-batch with -g, and this is the result:

tarting program: /home/romano/tmp/src/ufraw-0.22/ufraw-batch --embedded-image --out-type=png --size=64 p1040069.rw2 --overwrite --silent --output=uffa.png
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff71acb64 in lfModifier::~lfModifier() ()
   from /usr/lib/x86_64-linux-gnu/liblensfun.so.1
(gdb) RuntimeError: object at 0x7ff6cee868c0 of type ColumnExtension is not initialized
bt
#0  0x00007ffff71acb64 in lfModifier::~lfModifier() ()
   from /usr/lib/x86_64-linux-gnu/liblensfun.so.1
#1  0x00007ffff71acb89 in lfModifier::Destroy() ()
   from /usr/lib/x86_64-linux-gnu/liblensfun.so.1
#2  0x00005555555f5a62 in ufraw_close (uf=0x5555559ed940) at ufraw_ufraw.c:770
#3  0x00005555555f266f in main (argc=8, argv=0x7fffffffe338)
    at ufraw-batch.c:107
(gdb) quit
A debugging session is active.

So I tried to recompile it with

/* have the lensfun library */
/* #define HAVE_LENSFUN 1 */
#undef HAVE_LENSFUN

(I was unable to find a configure option to disable lensfun) and now the
resulting ufraw-batch is not segfaulting any more. Unfortunately, still
I can't generate thumbnails for raw files... I'm stuck.

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https://bugs.launchpad.net/bugs/1768855

Title:
  ufraw-batch in bionic segfault

Status in UFRaw:
  New
Status in lensfun package in Ubuntu:
  Confirmed
Status in ufraw package in Ubuntu:
  Confirmed

Bug description:
  Segmentation fault after any manipulation with any RAW files.

  Example:

  --- 
  eugene@eugene:~/Изображения$ ufraw-batch --embedded-image IMG_1375.CR2 
  ufraw-batch: Loaded IMG_1375.CR2 
  ufraw-batch: Saved /home/eugene/Изображения/IMG_1375.embedded.jpg 
  Segmentation fault (core dumped)
  ---

  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ufraw-batch 0.22-3
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu May  3 16:54:23 2018
  InstallationDate: Installed on 2017-11-15 (169 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171114)
  SourcePackage: ufraw
  UpgradeStatus: No upgrade log present (probably fresh install)

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