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| author | Jason Zaugg <jzaugg@gmail.com> | 2013-03-23 08:59:51 +0100 |
|---|---|---|
| committer | Jason Zaugg <jzaugg@gmail.com> | 2013-03-23 12:52:40 +0100 |
| commit | dd89b006218d76a74d0185392d5e427c0867a33c (patch) | |
| tree | 5d6202ccf02733a0c938fd2ccf008bff5ae84be6 /test/files/pos/t7285a.flags | |
| parent | 499962d34e83134d622fa319b84664ee2747dd72 (diff) | |
| download | scala-dd89b006218d76a74d0185392d5e427c0867a33c.tar.gz scala-dd89b006218d76a74d0185392d5e427c0867a33c.tar.bz2 scala-dd89b006218d76a74d0185392d5e427c0867a33c.zip | |
SI-7285 Fix match analysis with nested objects.
The fix for SI-6146 introduced `nestedMemberType` to
enumerate sealed subtypes based on the (prefixed) type
of the scrutinee and the symbols of its sealed subclasses.
That method needed to widen `ThisType(modSym)`s to
`ModuleTypeRef(modSym)` before calling `asSeenFrom`.
However, this could lead to confused in the match analysis,
which sees `ModuleTypeRef` as distinct from singleton types
on the same modules (after all, they aren't =:=). Spurious
warnings ensued.
This commit makes two changes:
- conditionally re-narrow the result of `asSeenFrom` in `nestedMemberType`.
- present `a.b.SomeModule.type` as `SomeModule` in warnings emitted
by the pattern matcher.
Diffstat (limited to 'test/files/pos/t7285a.flags')
| -rw-r--r-- | test/files/pos/t7285a.flags | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/test/files/pos/t7285a.flags b/test/files/pos/t7285a.flags new file mode 100644 index 0000000000..e8fb65d50c --- /dev/null +++ b/test/files/pos/t7285a.flags @@ -0,0 +1 @@ +-Xfatal-warnings
\ No newline at end of file |