Use O0 for better debug experience
- Dominant language
- C
- Stars
- 4.9k
- Forks
- 3k
- PR merge metrics
- No merged PRs in 30d
Description
Summary of changes
Make Debug profile use optimization level -O0 instead of -O1.
Impact of changes
Previously variables in scope could have been optimized out in Mbed Studio when building with the Debug profile.
Now their values should remain visible.
> I'll close this as it can't be accepted currently due to the breaking change. Please use custom profile meanwhile.
>
> @rotu Please create a tracking issue for this change
>
> I'll close this pull request now.
>
_Originally posted by @0xc0170 in https://github.com/ARMmbed/mbed-os/issues/14562#issuecomment-871265318_
Contributor guide
Research direction
Start by locating how the Debug profile selects its compiler optimization level for Mbed Studio and compare the current -O1 setting with the requested -O0 behavior. Confirm that variables remain visible during debugging, and check the breaking-change concern before considering the work done.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- build-system, operating-systems
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100