Not compiling with Intel 2019.3
I tried to compile with Intel 2019.3, and the procedures which extend type(xdmf_element_t) do not override the deferred TBP default_initialization. I guess that is because this TBP is private and deferred:
Thus, the compilation fails when compiling the extensions of type(xdmf_element_t) declared in different modules.
I do not know whether this should be supported ( hence it is a compiler BUG ) or it is due to the code.