Generic Subscripts

IDE: Visual Studio X/Fire
Version: 10.0.0.2407 (develop)
Target (If relevant): OSX
Description:
Subscripts should be permitted introduce generic parameters.

Expected Behavior:
Compiles.
Actual Behavior:
"E: opening parenthesis expected, got infix operator [<file> (<line>)]
Steps:

struct S {
    subscript<T>(t: T) -> Int /*where …*/ { // Error Here
      return 5
    }
}

Thanks, logged as bugs://82684