Compilation fails spuriously until I retype semicolon

[carotechsolutions]

Describe the problem

Same thing has happened to me a few times this week.

I have a semi colon at the end of my line but I get this error with the line number:

error: expected ';' before '}' token

I go to the line above that curly bracket, which does have a semicolon, and I erase the semicolon and retype it and it compiles.

The last time it happened, I compiled 3 times in a row without changing anything and it still error'd so I don't think it ran the code before autosave completed.

To reproduce

Just happens randomly.

I tried erasing the semicolon, typing it again and hitting CTRL+SHIFT+U to compile and upload really fast and beat the autosave but seems like it saves before compile anyway.

Expected behavior

No error when there is a semicolon at the end of the line

Arduino IDE version

2.3.8

Operating system

Windows

Operating system version

Windows 11

Additional context

I didn't verify on nightly build because I can't reproduce it.

Related

• https://forum.arduino.cc/t/problem-with-using-saveas/1191801
• https://forum.arduino.cc/t/ide-adding-garbage-to-end-of-sketch/1202097
• https://forum.arduino.cc/t/sketch-corruption-in-the-ide-editor/1269713
• https://forum.arduino.cc/t/ide-bug-displayed-code-does-not-match-what-is-actually-there/1280993
• https://forum.arduino.cc/t/ide-2-3-3-randomly-corrupting-files-while-editing/1290146/1
• https://forum.arduino.cc/t/ide-2-3-3-randomly-corrupting-files-while-editing/1290146/7
• Sketch content sometimes lost on save to Synology Cloud Drive #2819

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details

[per1234]

Thanks for your report @carotechsolutions. A common pattern I have noticed in similar reports is the sketch being saved to a folder that is either using a cloud storage service (e.g., Microsoft OneDrive, Dropbox), or a network drive.

Is your sketch saved to a folder that is synced with a cloud storage service or a network drive?

[carotechsolutions]

It is not on a cloud storage drive but it is on an external hard drive.