https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95551
Bug ID: 95551
Summary: [OpenMP, OpenACC] -fopenmp/-fopenacc also with
-foffload=disable fails with: (.gnu.offload_vars+0x0):
undefined reference to `A.10.2'
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: openacc, openmp, wrong-code
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
Loosely related to PR 95550 (for a variant of this test case, which fails with
an ICE).
The following test case fails to compile with -fopenmp or -fopenacc with:
(.gnu.offload_vars+0x0): undefined reference to `A.10.2'
at least when offloading to AMDGCN (for nvidia, one runs into PR 65181) and
also with "-foffload=disable -O3".
Note: In order to reproduce this issue, an offloading compiler has to be
configured (configure-time set ENABLE_OFFLOADING has to evaluate to true) as
otherwise no .gnu.offload_vars is generated.
program main
implicit none (type, external)
integer :: j
integer, allocatable :: A(:)
A = [(3*j, j=1, 10)]
call bar (A)
deallocate (A)
contains
subroutine bar (array)
integer :: i
integer :: array(:)
!$omp target map(from:array)
!$acc parallel copyout(array)
array = [(-2*i, i = 1, size(array))]
!$omp do private(array)
!$acc loop gang private(array)
do i = 1, 10
array(i) = 9*i
end do
if (any (array /= [(-2*i, i = 1, 10)])) error stop 2
!$omp end target
!$acc end parallel
end subroutine bar
end
