#1628: warning(s) for using stolen syntax that's not currently enabled
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Reporter: Isaac Dupree | Owner:
Type: feature request | Status: new
Priority: low | Milestone: _|_
Component: Compiler | Version: 6.6.1
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Comment (by Isaac Dupree):
I meant, when your code doesn't have `-XExtension` enabled, warn when the
enabling of `-XExtension` would change/break the meaning of your code (at
least on the lexical level). You're probably right that it's difficult to
implement --> milestone `_|_`. I suppose could involve running the lexer
twice with different flags and seeing if the results are the same. Maybe
something more reasonable for a GHC API client to do?..
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1628#comment:6>
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