Building the following code with DMD 2.059head fails in ICE.
MESSAGE: Assertion failure: '0' on line 277 in file 'tocsym.c'

DMD2.058 works.

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struct File {
  ~this(){}
}

struct ByLine
{
  File file;

  // foreach interface
  @property bool empty() const
    { return true; }
  @property char[] front()
    { return null; }
  void popFront(){}
}

void main()
{
  int dummy;
  ByLine f;
  foreach (l; f) {
    scope(failure) // 'failure' or 'success' fails, but 'exit' works
      dummy = -1;
    dummy = 0;
  }
}