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author | Jason Zaugg <jzaugg@gmail.com> | 2013-10-09 01:31:13 -0700 |
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committer | Jason Zaugg <jzaugg@gmail.com> | 2013-10-09 01:31:13 -0700 |
commit | 185ff4c929645a14fcfe77b6bcdea2bc28ece100 (patch) | |
tree | 9e3d37e8a950ac446b94d71d60b43d618a1fccb5 /test | |
parent | acd77803f7da7c369f4ffdc70b5eeec4a23e35ae (diff) | |
parent | 8ed7099f7db6a1060a490a594c958ca9a8b41487 (diff) | |
download | scala-185ff4c929645a14fcfe77b6bcdea2bc28ece100.tar.gz scala-185ff4c929645a14fcfe77b6bcdea2bc28ece100.tar.bz2 scala-185ff4c929645a14fcfe77b6bcdea2bc28ece100.zip |
Merge pull request #3022 from retronym/ticket/7899
Don't infer by-name types during, e.g. eta-expansion
Diffstat (limited to 'test')
-rw-r--r-- | test/files/neg/t7899.check | 6 | ||||
-rw-r--r-- | test/files/neg/t7899.scala | 7 | ||||
-rw-r--r-- | test/files/pos/t7584.scala | 11 | ||||
-rw-r--r-- | test/files/run/t7584b.scala | 14 | ||||
-rw-r--r-- | test/files/run/t7899.scala | 5 |
5 files changed, 32 insertions, 11 deletions
diff --git a/test/files/neg/t7899.check b/test/files/neg/t7899.check new file mode 100644 index 0000000000..febfe76b8a --- /dev/null +++ b/test/files/neg/t7899.check @@ -0,0 +1,6 @@ +t7899.scala:5: error: type mismatch; + found : Int => Int + required: (=> Int) => ? + foo(identity)() + ^ +one error found diff --git a/test/files/neg/t7899.scala b/test/files/neg/t7899.scala new file mode 100644 index 0000000000..f2dea3ab1f --- /dev/null +++ b/test/files/neg/t7899.scala @@ -0,0 +1,7 @@ +object Test { + def foo[B](f: (=> Int) => B): () => B = () => f(0) + + def main(args: Array[String]) { + foo(identity)() + } +} diff --git a/test/files/pos/t7584.scala b/test/files/pos/t7584.scala deleted file mode 100644 index 52d127ecb9..0000000000 --- a/test/files/pos/t7584.scala +++ /dev/null @@ -1,11 +0,0 @@ -object Test { - def fold[A, B](f: (A, => B) => B) = ??? - def f[A, B](x: A, y: B): B = ??? - def bip[A, B] = fold[A, B]((x, y) => f(x, y)) - def bop[A, B] = fold[A, B](f) - - // these work: - fold[Int, Int]((x, y) => f(x, y)) - fold[Int, Int](f) -} - diff --git a/test/files/run/t7584b.scala b/test/files/run/t7584b.scala new file mode 100644 index 0000000000..fd560f0418 --- /dev/null +++ b/test/files/run/t7584b.scala @@ -0,0 +1,14 @@ +object Test extends App { + def fold[A, B](f: (A, => B) => B) = (b: B) => f(null.asInstanceOf[A], b) + def f[A, B](x: A, y: B): B = y + def bip[A, B] = fold[A, B]((x, y) => f(x, y)) + def bop[A, B] = fold[A, B](f(_, _)) + + // these work: + fold[Int, Int]((x, y) => f(x, y))(0) + fold[Int, Int](f(_, _))(0) + + // Used to throw a ClassCastException. Since the fix for SI-7899, these issue type errors. + // fold[Int, Int](f _)(0) + // fold[Int, Int](f)(0) +} diff --git a/test/files/run/t7899.scala b/test/files/run/t7899.scala new file mode 100644 index 0000000000..5879d4b9fe --- /dev/null +++ b/test/files/run/t7899.scala @@ -0,0 +1,5 @@ +object Test extends App { + def id[A](a: => A): A = null.asInstanceOf[A] + def foo(f: (=> Int) => Int) = () => f(???) + foo(id)() // should be allowed and not throw ??? +} |