// Distributed under the terms of the MIT license
// Test case submitted to project by https://github.com/practicalswift (practicalswift)
// Test case found by fuzzing

struct B<T {
{
{
}
{
{
}
}
{
}
{ { }
{
}
}
{
{
}
}
}
{
}
func b ( c
{
}
struct c<S: SequenceType, T where Optional<T> = S.Generator.Element
