Language deviation\bug: can't pass {} as a lambda

[DarkDimius]

[info] % dotc amp.scala
[info]
[info] compiling /Users/dark/workspace/dotty/tests/partest-generated/run/amp.scala
[info] options: -pagewidth 160 -Yno-deep-subtypes -Yno-double-bindings -Ycheck:tailrec,resolveSuper,mixin,restoreScopes -d ./tests/partest-generated/run/amp-run.obj
[info] /Users/dark/workspace/dotty/tests/partest-generated/run/amp.scala:19: error: method bar in object Test$ does not take more parameters
[info]   Console.println((bar{ Console.println("g called"); 42 })())
[info]                   ^
[info] /Users/dark/workspace/dotty/tests/partest-generated/run/amp.scala:20: error: method foo in object Test$ does not take more parameters
[info]   Console.println(foo()())

[odersky]

We now get a better error message:

amp.scala:5: error: not a function: => Int(f); cannot be followed by `_'
    val x = f _
            ^
amp.scala:10: error: not a function: => Int(g); cannot be followed by `_'
    g _
    ^