Spurious compilation failure when sketch code file has "UTF-8 with BOM" encoding #3015
Description
Describe the problem
Recently I've found that simple alpha-numeric multi-line comments (no back slashes etc) are sometimes the cause of build failure in unpredictable ways. It appears to be associated with any white space lines between the comment block and code. Deleting blank lines always cures the problem but that is the only reproducible effect.
Examining the hex edit of an offending sketch reveals that in some cases (but not all) the UTF-8-BOM encoding header characters are the cause. If these characters are cut then the .ino builds just fine.
In other cases there are no such rogue characters yet the problem remains.
To reproduce
Appears random in my experience so not reproducible by me.
Expected behavior
I expect a
/* comment */
to have no impact on the build.
I expect a
/* multi
line
comment */
to have no impact on the build.
I expect that added white-space helping the readability of the code will have no impact on the build.
Arduino CLI version
Original report
1.2.0 (Arduino IDE 2.3.6)
Last verified with
Operating system
Windows
Operating system version
11
Additional context
Additional reports
Related
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