The following is a partial VHDL encryption sample that shows a valid specification of the
error_handling.
Although the commonblock specifies a value of
"srcrefs", which AMD
does not support; that value is overridden in the
AMD-specific toolblock.
In the following example, the IP author has defined the error_handling as "delegated", which
AMD supports.
`protect begin_commonblock
`protect control error_handling = "srcrefs"
`protect end_commonblock
`protect begin_toolblock
`protect key_keyowner="Xilinx",...
`protect control error_handling = "delegated"