Error (18108): Can't place multiple pins assigned to pin location Pin_XXX in Quartus 18.1.2 for a partial reconfig design

Still no answer from Intel...

I created a very simple testcase based on blinking_led example (which I use to try root partitioning as described in UG-20135 https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-qpp-block-based-design.pdf ).

In this testcase, there is no partial reconfiguration, only a partition for u_blinking_led instance.

• Run it as is will lead to Quartus error message.
• Comment out lines 27 to 37 relative to partition will remove this error message

I hope that this testcase will help Intel support team finding the source of our problem.