#1002477
  • Created on
    2015-05-31 17:21
  • Reported by
    robby@santoslab.org
  • Status
    Fixed
  • Priority
    Normal (3)
  • Assigned to
    wpopielarski769697
  • Milestone
    Lithium 4.3
  • Plan Level
    -
  • Permission type
    Public
  • Due Date
    -

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Spurious compile errors when disabling/enabling useScopesCompiler with -Ybackend:GenBCode presents in Scala IDE 4.1

I have a weird issue with Scala IDE 4.1 useScopesCompiler and -Ybackend:GenBCode that result in compile errors; I observed that disabling/enabling useScopesCompiler with -Ybackend:GenBCode cause spurious compile errors.

Here are the steps to reproduce the issue:

1. Freshly Install and launch Scala IDE 4.1 with a fresh workspace
2. Add -Ybackend:GenBCode in the Scala compiler preference
3. Import the attached Team Project Set File
4. Disable useScopesCompiler (this triggers recompilation)
5. Enable useScopesCompiler (this triggers another recompilation)

After Step 5, some of the imported projects have compile errors (sometimes the compile errors also happen in Step 4); no amount of project cleaning help to rid of the errors.
To remove them, I have to (temporarily) take out -Ybackend:GenBCode, which then triggered another recompilation.
I can then add back -Ybackend:GenBCode without causing the compile errors to appear.
If I do Step 4 and 5 again, the errors reappear.
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  on 2015-05-31 17:21 *
By robby@santoslab.org
Attachment scalaide-test.psf added
file:b70a02b7Kr5z3dacwqjQYw
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  on 2015-06-02 06:33 *
By wpopielarski769697
Status changed from New to Accepted
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  on 2015-06-02 06:33 *
By wpopielarski769697
Assigned to set to wpopielarski769697
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  on 2015-09-23 08:06 *
By wpopielarski769697
Milestone set to Lithium 4.2.1
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  on 2015-10-21 15:45 *
By wpopielarski769697
The -Ybackend:GenBCode alone is actually working from version 4.2.0
the combination of -Ybackend:GenBCode -Ydelambdafy:method needs a change in scala compiler. PR is open https://github.com/scala/scala/pull/4809
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  on 2015-10-21 15:45 *
By wpopielarski769697
Status changed from Accepted to Fixed
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  on 2015-10-22 07:57 *
By Iulian Dragos
Status changed from Fixed to Accepted
Let's keep this open until the upstream PR is actually merged. Then also please set the 'fixed in version' field ;-)
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  on 2015-10-22 08:08 *
By wpopielarski769697
sorry, I was too fast, anyway maybe set the status to 'test' as a notification that right now dev is done and ticket waits for a sort of confirmation?
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  on 2015-12-01 11:52 *
By wpopielarski769697
Status changed from Accepted to Fixed