SVG import segfault

[radl]

Hi!

I have problem with libexpat but on Fedora 28. Does anyone know how to do the process described by Chris_G ??




OS: Linux
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.Unknown
Build type: Unknown
Python version: 2.7.15
Qt version: 4.8.7
Coin version: 3.1.3
OCC version: 6.9.1.oce-0.18
Locale: Polish/Poland (pl_PL)

[Kunda1]

OS: Linux
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.Unknown
Build type: Unknown
Python version: 2.7.15
Qt version: 4.8.7
Coin version: 3.1.3
OCC version: 6.9.1.oce-0.18
Locale: Polish/Poland (pl_PL)

An aside, your OCC version is also very inferior

[radl]

is there any version that will have no problem with importing svg?

OS: Linux
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.Unknown
Build type: Unknown
Python version: 2.7.15
Qt version: 4.8.7
Coin version: 3.1.3
OCC version: 6.9.1.oce-0.18
Locale: Polish/Poland (pl_PL)

An aside, your OCC version is also very inferior

[NormandC]

OCE/OCC has no relation to the libexpat issue. Kunda1 was just mentioning that your OCC version is extremely old. Many features in FreeCAD won't be available, or have bugs.

Chris_G's fix on Ubuntu installs libexpat version 2.1.0 (as is clearly shown in his post). So you need to downgrade your expat package to this version. I do not know if you can find it packaged on Fedora, nor what is the recommended procedure. For that you should ask advice on a forum dedicated to Fedora.

[radl]

OCE/OCC has no relation to the libexpat issue. Kunda1 was just mentioning that your OCC version is extremely old. Many features in FreeCAD won't be available, or have bugs.

Chris_G's fix on Ubuntu installs libexpat version 2.1.0 (as is clearly shown in his post). So you need to downgrade your expat package to this version. I do not know if you can find it packaged on Fedora, nor what is the recommended procedure. For that you should ask advice on a forum dedicated to Fedora.

thanks for explanation

[sgrogan]

thanks for explanation

FreeCADer @PrzemoF provides Fedora packages via copr: https://forum.freecadweb.org/viewtopic. ... 90#p251319
I think he takes care of this.

[mrvanes]

Ubuntu 18.10 (Cosmic) just received a wayland update that depends on a more recent version of libexpat1:

Code: Select all

dpkg: dependency problems prevent configuration of libwayland-bin:
 libwayland-bin depends on libexpat1 (>= 2.0.1); however:
  Package libexpat1:amd64 is not configured yet.

So it officially became a bit harder to keep libexpat1 downgraded

[Kunda1]

Has the bug been reported upstream (https://github.com/libexpat/libexpat)?
I can't seem to find it

[NormandC]

IIRC the problem is not with the libexpat library itself, but with libcoin, which embeds its own obsolete version of libexpat that clashes with the system one. kkremitzki announced an upcoming new package of libcoin, I wonder if this version will fix the issue.

Edit: this answer was already given by wmayer in this very same topic in page 2!

https://forum.freecadweb.org/viewtopic. ... 10#p208769

[NormandC]

Coin3D Transition in Debian; Pivy 0.6.4 finally uploaded

Changes:
coin3 (4.0.0~CMake~6f54f1602475+ds1-1~exp1) experimental; urgency=medium
.
(...)
* Use of system expat library. Added as build dependency. (Closes: #884947)

Will be fixed in Debian soon, we'll be able to backport it to the Ubuntu PPA.

As for other distros:

Part of the problem was already reported to coin3d by an expat developer - and it doesn't look like anybody there is listening:
https://bitbucket.org/Coin3D/coin/issue ... pat-please

Unfortunately the Coin project is more or less dead so that nobody will fix it upstream. Besides this it's not a long-term solution anyway because as soon as the system version of expat increases you have the same problem again. So, the best is to fix by the maintainers of each distribution.