I'm not sure if this is related, but I can reliably segfault the 0.17 version while attempting to create a fillet on a simple shape:
From Part Design, with XY plane reference.
- create a sketch containing a circle, 2mm radius, centred on the origin
- pad it to 1.3mm
- on one side create a new sketch containing a rectangle 4.0 * 0.7mm, centred on the origin
- use that rectangle to make a pocket 0.5mm deep
One side of the two higher sections contains a vertical line. The curve on that side will accept a fillet radius 0.25mm - it will only highlight as far as the vertical line, but the fillet goes around to the valley on the other side. Attempting the same with the other arc selected (the other side of the valley) causes an immediate segfault.
OS: Linux Mint 17.2 Rafaela
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.12435 (Git)
Build type: None
Python version: 2.7.6
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 7.1.0
Locale: English/UnitedKingdom (en_GB)
I have not yet posted a bug as it looks as if this is related. There is a crashdump on the terminal but it's too large to post here.