Segmentation fault (core dumped) when editing a spline

Bug Reports / Issues
1

banenrok_glad_tot_eerste_heupwijdte_bug.sm2d (6.0 KB) I have a segmentation fault that happens consistently with this file. I’m trying to edit the spline that runs from SplPath_d_J2, wanting to mirror it to SplPath_d_2_J2_2.

Here’s the steps that lead to the crash:

  1. Open the properties of SplPath_d_J2
  2. Select path d
  3. Enter “Line_d_g1/8” in the Length field of the Second control point.

This crashes Seamly2d every time.

Here’s my Seamly2d version info again:

Seamly2D version: Seamly2D 0.6.0.1
Build revision: unknown
Build date: Built on Wed Sep 2 2026 at 20:17:56
Qt Version: 6.11.2
CPU: x86_64
Compiler: GCC 16.2.1 20260810 64 bit
CPU: x86_64
OS: Linux
OS Version: unknown
Locale: en_US
Country: United States
Language: English
Script Name: Latin
Decimal Point: ,
Negative Sign: -
Positive Sign: +
Direction: Automatic
System Codec: UTF-8
Arguments: seamly2d
2

We need the measurement file to to open the pattern.

3

Oops, of course! This is still a bit new to me :sweat_smile:

Danckaerts_model.smis (11.9 KB)

I was able to progress a bit further, somehow, but then it crashed when I tried to put (Angle1Spl_d_d_2 - 90) in the Angle field of path d :grimacing:

4

I have no issue with the Windows build. ???

image
image813×612 45.3 KB

I can check the appimage build later later.

BTW… the angle needs to be fixed.

That said though… I’m not sure why your decimal point appears to be a comma?

image

Check your prefs and see what the separator is set at… for en_US it should be a period… setting the separtor to default forces the app to use the “c” locale using the period.

image
image809×342 38.7 KB

5

Hmm, I was afraid of that. Well, no idea then… Yes, I was trying to fix the angle, but it kept crashing :sweat_smile:

In the Netherlands, we use a comma instead of a period, so this is expected behaviour!

6

Understood… I just saw that your locale is

image

Which does not use the comma thus my confusion.

Do you have any issues with other tools or just the Interactive - Spline?

7

Yeah, I noticed that too… But the behaviour is how I want it so I haven’t really looked into it.

I’ve had the occasional crash, but none as recurring as this one. I’ll see if I can get some logs for you. Does Seamly2d have a debug command line option?

8

Not that I’m aware of for the ‘release’ builds.

9

If you open Seamly from the terminal command line whatever logging it does will be visible in the terminal.

:unicorn:

10

I checked… the qDebug() statements will appear in a 'releae" build. Most of the qDebug() statements are used to track program flow rather than reporting specific errors. For ex:

void VDrawTool::SaveOption(QSharedPointer<VGObject> &obj)
{
    qCDebug(vTool, "Saving tool options");
11

coredump.txt (196.4 KB)

I did manage to get a coredump with a little bit more information! Now it happened when I right-clicked that spline.

I also tried running the program with gdb:

gdb_output.txt (28.5 KB)

Maybe this has some useful information?