https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114002
Bug ID: 114002
Summary: [OpenACC][OpenACC 3.3] Add 'acc_attach'/'acc_detach'
routine
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: openacc
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
Created attachment 57466
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57466&action=edit
OpenACC run-time testcase
The problem with acc_attach is that it does not like any temporary variable.
For
call acc_attach(var%v)
We need at the end:
acc_attach(&var.v.data)
But we will easily get:
parm.v.data = var.v.data;
...
acc_attach(&parm.v.data)
which won't work
=> This requires a builtin in the GCC front end to handle this as no Fortran
semantic will handle this. Note that:
subroutine acc_attach (ptr_addr) bind(C)
type(*), dimension(*), target, optional :: ptr_addr
end subroutine
comes close but gets 'acc_attach (var.v.data)' and not '&var.v.data' as
argument.
