Description:
The problem seems to occur in the interface. The trigger is probably a problem in the extension. But since the main application does not send an exception but crashes itself, the error cannot be found in the extension. For the error message when the application crashes, see below.

Background: WritingTool is an extension written in Java that mainly performs a grammar check. Since it operates not only at the level of sentences and paragraphs, but also on the entire text, various LO interfaces are used.

I have two concerns:

1. An extension should not crash the main program. That is a bug. Instead, an exception should be sent to the extension via the interface. The extension can then react to it accordingly.

2. I need a hint as to which interface is causing the problem to be able to find the problem in the extension's code. Can anyone tell from the error output below which interface it is?

The Error output on console:

terminate called after throwing an instance of 'std::out_of_range'
  what():  basic_string_view::substr: __pos (which is 310) > __size (which is 292)
terminate called after throwing an instance of 'std::out_of_range'
  what():  basic_string_view::substr: __pos (which is 30) > __size (which is 20)


Fatal exception: Signal 6
Stack:
#0 /app/libreoffice/program/libuno_sal.so.3(_ZN3sal13backtrace_getEj+0x39) [0x78582ef5dec9]
#1 /app/libreoffice/program/libuno_sal.so.3(+0x45549) [0x78582ef69549]
#2 /app/libreoffice/program/libuno_sal.so.3(+0x4579a) [0x78582ef6979a]
#3 /usr/lib/x86_64-linux-gnu/libc.so.6(+0x41140) [0x78582ec3e140]
#4 /usr/lib/x86_64-linux-gnu/libc.so.6(+0x99db4) [0x78582ec96db4]
#5 /usr/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x78582ec3e08e]
#6 /usr/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x78582ec25882]
#7 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xadf3d) [0x78582e8adf3d]
#8 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xc365a) [0x78582e8c365a]
#9 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZSt10unexpectedv+0) [0x78582e8ad99d]
#10 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(__cxa_rethrow+0) [0x78582e8c3910]
#11 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZSt24__throw_out_of_range_fmtPKcz+0x15c) [0x78582e8b148e]
#12 /app/libreoffice/program/liblnglo.so(+0x2993a) [0x78582b55e93a]
#13 /app/libreoffice/program/liblnglo.so(+0x58899) [0x78582b58d899]
#14 /app/libreoffice/program/libuno_sal.so.3(+0x4845b) [0x78582ef6c45b]
#15 /usr/lib/x86_64-linux-gnu/libc.so.6(+0x97e0e) [0x78582ec94e0e]
#16 /usr/lib/x86_64-linux-gnu/libc.so.6(__clone+0x44) [0x78582ed197d4]

Steps to Reproduce:
It happens during major changes to the text (entering, deleting, copying, pasting, etc.)

Actual Results:
crash

Expected Results:
Throw an exception


Reproducible: Sometimes


User Profile Reset: No

Additional Info:
See description