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| author | Paul Phillips <paulp@improving.org> | 2012-09-28 14:36:42 -0700 |
|---|---|---|
| committer | Paul Phillips <paulp@improving.org> | 2012-10-09 14:17:34 -0700 |
| commit | ba36c44c31d1a1e0b5c0cf3d4775edd0ae0d5a13 (patch) | |
| tree | 8eb8caeb82afa0677a2e78291a990a9e525f3c7e /test/pending | |
| parent | 432f9368011e0fd9e89ca0e18082bfec180baf32 (diff) | |
| download | scala-ba36c44c31d1a1e0b5c0cf3d4775edd0ae0d5a13.tar.gz scala-ba36c44c31d1a1e0b5c0cf3d4775edd0ae0d5a13.tar.bz2 scala-ba36c44c31d1a1e0b5c0cf3d4775edd0ae0d5a13.zip | |
Fix for SI-4744, another variety of cycle.
I threw this in with the previous commit behind -Ybreak-cycles, but
this one is much less sketchy. Explanation: have to handle f-bounds
more deftly. Namers forces lower bounds to prevent recursion in
that direction, but a light touch is required to handle these two
situations differently:
// This is a cyclic type parameter - an error is correct
class A[T <: Comparable[_ <: T]]
// This is not cyclic - it flips the arrow
class B[T <: Comparable[_ >: T]]
Long have I been haunted by the knowledge that you can
write class B in java, but not in scala:
public class B<T extends Comparable<? super T>> {}
It's over! We've achieved parity with java.
Diffstat (limited to 'test/pending')
| -rw-r--r-- | test/pending/pos/t4744/Bar.scala | 1 | ||||
| -rw-r--r-- | test/pending/pos/t4744/Foo.java | 1 |
2 files changed, 0 insertions, 2 deletions
diff --git a/test/pending/pos/t4744/Bar.scala b/test/pending/pos/t4744/Bar.scala deleted file mode 100644 index 1fb6d78973..0000000000 --- a/test/pending/pos/t4744/Bar.scala +++ /dev/null @@ -1 +0,0 @@ -class Bar { val quux = new Foo[java.lang.Integer]() } diff --git a/test/pending/pos/t4744/Foo.java b/test/pending/pos/t4744/Foo.java deleted file mode 100644 index 6c764d0470..0000000000 --- a/test/pending/pos/t4744/Foo.java +++ /dev/null @@ -1 +0,0 @@ -public class Foo<T extends Comparable<? super T>> {} |