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author | Jason Zaugg <jzaugg@gmail.com> | 2014-11-08 22:50:47 +1000 |
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committer | Jason Zaugg <jzaugg@gmail.com> | 2014-11-09 09:48:39 +1000 |
commit | 5f50e0368e635db8279797095dbd34470722d5c7 (patch) | |
tree | b60350f560123f74007a5cb70b9424d417f9bd7f /test/files/specialized/spec-hlists.scala | |
parent | b431a4bd83d3bfb2b95d0426d2905b34ce1265ad (diff) | |
download | scala-5f50e0368e635db8279797095dbd34470722d5c7.tar.gz scala-5f50e0368e635db8279797095dbd34470722d5c7.tar.bz2 scala-5f50e0368e635db8279797095dbd34470722d5c7.zip |
SI-8534 Avoid crash in erroneous SelectFromTypeTree
PR #2374 changed the behaviour of `typedSingletonTypeTree` in the
presence of an error typed reference tree. It incorrectly
returns the reference tree in case on an error. However, this is
a term tree, which is an inconsistent result with the input type
tree. Consequently, a `typedSelectInternal` later fails when
using this as the qualifier of a `SelectFromTypeTree`.
Both test cases enclosed show this symptom.
This commit:
- Returns `tree` rather than `refTyped` when `refTyped` is
error typed or when it isn't suitable as a stable prefix.
- Avoids issuing a cascading "not a stable prefix" error if the
`refTyped` is error typed.
- Adds an extra layer of defense in `typedSelectFromTypeTree`
to bail out quickly if the qualifier is error typed.
The last measure is not necessary to fix this bug.
Diffstat (limited to 'test/files/specialized/spec-hlists.scala')
0 files changed, 0 insertions, 0 deletions