Fix SI-3836 not-really-ambiguous import detection.

Normalize types before declaring that two imports are ambiguous,
because they might be the same thing.  Review by @moors.

1 files changed, 13 insertions, 0 deletions

diff --git a/test/files/neg/t3836.check b/test/files/neg/t3836.check
new file mode 100644
index 0000000000..ff2fc36ae9
--- /dev/null
+++ b/test/files/neg/t3836.check
@@ -0,0 +1,13 @@
+t3836.scala:17: error: reference to IOException is ambiguous;
+it is imported twice in the same scope by
+import foo.bar._
+and import java.io._
+    def f = new IOException // genuinely different
+                ^
+t3836.scala:26: error: reference to Bippy is ambiguous;
+it is imported twice in the same scope by
+import baz._
+and import bar._
+    def f: Bippy[Int] = ???
+           ^
+two errors found