JUCE bug: SEGV on unknown address 0x000000000968

[distrho]

JUCE bug: SEGV on unknown address 0x000000000968

[Fak3]

More info: updated to current master, bug is still here. I even updated to latest JUCE 4.0.1, and still experience same bug.

I installed libx11 debug symbols, and it show that XInternAtom is called with NULL display.

#0  0x00007f10bd6ad95a in XInternAtom (dpy=0x0, name=0x7f1056e6de9a "_NET_WORKAREA", onlyIfExists=1) at IntAtom.c:174
#1  0x00007f1056dd9ee8 in juce::Atoms::getIfExists(char const*) (name=0x7f1056e6de9a "_NET_WORKAREA") at ../source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp:104
#2  0x00007f1056ddb6ed in juce::DisplayGeometry::queryDisplayInfos(_XDisplay*, double) (this=0x6eb6be0, dpy=0x0, masterScale=1) at ../source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp:1275
#3  0x00007f1056ddaf06 in juce::DisplayGeometry::DisplayGeometry(_XDisplay*, double) (this=0x6eb6be0, dpy=0x0, masterScale=1) at ../source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp:783
#4  0x00007f1056ddb53a in juce::DisplayGeometry::getOrCreateInstance(_XDisplay*, double) (dpy=0x0, masterScale=1) at ../source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp:924
#5  0x00007f1056da529c in juce::Desktop::Displays::findDisplays(float) (this=0x366b720, masterScale=1) at ../source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp:3758

If Ardour is built without address-sanitizer, it crashes at that point.
In Qtractor everything works fine for me.
I think suil may be involved in this issue. (i noticed suil_instance_new() call in backtrace)

[Fak3]

Oh, more info: vst version of TAL-Reverb-III works just fine in Ardour. Only LV2 crashes.

[falkTX]

Thanks for the report.
Took me a little time but I found the case.
Fix is coming after I confirm the updated juce code works.