In some cases, a bugbox is generated when compiling an example
that references X'Image, where X is a constrained object of a
discriminated protected type.
gcc/ada/
* sem_ch3.adb (Constrain_Corresponding_Record): When copying
information from the unconstrained record type to a newly
constructed constrained record subtype, the
Direct_Primitive_Operations attribute must be copied.
git://gcc.gnu.org / gcc.git / commit