RichTextLabel::_process_line error makes Godot unresponsive during One-Click Deploy

[ondesic]

Godot version:

3.02

Issue description:

I have changed nothing in my program, but out of nowhere I can't One-Click Deploy my app to my phone without Godot freezing and the terminal goes to an endless loop saying:

"error: richtextlabel::_process_line: index line=0 out of size"

This may not be enough info, but again everything was running fine, then out of nowhere this is occurring.

[vnen]

Sounds the same as #16072.

[ondesic]

I checked 16072. the only similarity is the error code. With my error it happens every time I send the program to my phone.

[ondesic]

I am really working hard to understand this bug to help Godot. The exact looping error is:

ERROR: RichTextLabel::_process_line: Index line=0 out of size (l.offset_caches.size()=0)
   At: scene\gui\rich_text_label.cpp:117

I opened the CPP file mentioned and it states:

if (p_mode != PROCESS_CACHE) {

		ERR_FAIL_INDEX_V(line, l.offset_caches.size(), 0);
		line_ofs = l.offset_caches[line];

	}

I have painstakingly taken the only scene in my app that has any labels in it. That scene is called "HUD". It is an instance added to the MAIN scene and is a CanvasLayer that holds labels and buttons. I have deleted each child and script of the HUD scene with no luck.

Finally I changed the PAUSE_MODE of the HUD scene to "stop" instead of "inherit" and now it runs fine.
If I change it back to "inherit" or "process", the errors come back.

Could someone please look into this. I'll help however I can.

Could you make a minimal project that isolates the issue?

[vnen]

I checked 16072. the only similarity is the error code

Yes, and with that it's likely they have the same root cause. The problem is not the error per se but the infinite loop that happens when the error is shown.

[ondesic]

I have whittled down the project. In its full form it errors every time, In it's smaller form it doesn't error out every time (dang it). However, after One-Click Deploying it 3 or 4 times to the android phone, it will error loop. One time it took 10 times running it on the phone to get the error loop. Here is the simple project.
test.zip

[ondesic]

Could someone look at the little test project I put together?

[ondesic]

Did anyone try this? I know everyone is busy, but I am just trying to help Godot. It's been 25 days since I started the thread. :-(

We are all trying to help Godot. But as you can see there are more than two years old issues still open. Only way to ensure bugfix is to provide the fix yourself. (even then it still takes time to review)

I can't try this because I don't have a configured phone to do One-click deploy on.

If you're on Linux, try using gdb to breakpoint on the error line and give us stack trace. That will help pinpointing the cause. I assume nothing is wrong with the project as there's no usage of RichTextLabel.

[ondesic]

Good point about issues over 2 years. The test project consistently gives me errors is I follow the steps I outlined. It is beyond my expertise as to why the looping error is occurring or how to fix it.