New comment by yopito on void-packages repository

https://github.com/void-linux/void-packages/issues/12595#issuecomment-504553657
Comment:
I saw this bug too while packaging FreeCAD 0.18 (related to qt).

@pullmoll:  change stack size already been tried (issue #8909) without success, but without rebuilding qt. I've tried `sudo chelf -s 82099200 /usr/bin/FreeCAD` for instance.

One possible alternate workaround: disable the startWorkBench on startup in the user's setting file:

```
$ diff -bu ~/.FreeCAD/ORIG/user.cfg ~/.FreeCAD/user.cfg 
--- .FreeCAD/ORIG/user.cfg      2019-03-03 13:28:58.546387911 +0100
+++ .FreeCAD/user.cfg   2019-03-03 14:10:19.245254436 +0100
@@ -9,7 +9,7 @@
	   <FCParamGroup Name="Preferences">
		 <FCParamGroup Name="General">
		   <FCText Name="FileOpenSavePath">/home/yopito</FCText>
-          <FCText Name="AutoloadModule">StartWorkbench</FCText></FCParamGroup>
+          <FCText Name="AutoloadModule">NoneWorkbench</FCText></FCParamGroup>
		 <FCParamGroup Name="Units"/>
		 <FCParamGroup Name="Macro"/>
		 <FCParamGroup Name="Mod">
```
This way, FreeCAD is launched on musl. However, I don't know if it's sufficient for real-word usage, if FreeCAD uses qt5-webkit functionalities somewhere else.