July 27, 2015
https://issues.dlang.org/show_bug.cgi?id=14840

          Issue ID: 14840
           Summary: [2.068.0-b2] failure to inline _trivial_ function
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: wyrlon@gmx.net

void Bug(uint val)
{
  pragma(inline, true);

  for(int i=0;i<2;++i) {}
}
void main()
{
  Bug(1);
}

dmd -inline bug.d
bug.d(1): Error: function bug.Bug cannot inline function

--