Warn when tracing is enabled with big-bang?
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- Dominant language
- Racket
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Description
Racket 8.4
Language -> Choose Language -> Show Details -> [X] Enable tracing
Would it be possible for big-bang to generate a warning if run when the "Enable tracing" option is selected under Output Syntax?
The error caused by my (non-minimal) sample is currently:
expr-iterator: unknown expression (phase #false): #<syntax:/usr/local/share/racket/collects/racket/private/kw.rkt:1392:76 (#%variable-reference proc>6)> (#%variable-reference proc>6)
This might not be worth pursuing, since there is a clear indication that the language is not standard.
However, turning on tracing is nice for debugging when working with lists / recursive functions, so it's possible for students to end up with tracing enabled "by accident".
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- Read the whole issue, then the project's contributing guide.
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Research direction
Reproduce the linked sample with DrRacket's Language → Choose Language → Show Details tracing option enabled, then compare the behavior with tracing disabled. Start by locating the big-bang entry point and the existing tracing or error-reporting path. Done means the incompatibility produces a clear warning instead of the reported expr-iterator error.
Written by the indexing model from the issue text.
Assessment
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100