http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51250
Bug #: 51250
Summary: [4.7 Regression] Bug with SUM(,dim,mask)
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: anl...@gmx.de
The following program produces a wrong result:
program gfcbug115
implicit none
integer :: n_obstype = 2
integer :: nboxes = 1
integer :: nprocs = 1
integer :: nbox, j
integer, allocatable :: nbx(:,:), pes(:)
allocate (pes(nboxes))
allocate (nbx(n_obstype,nboxes))
nbx(:,:) = 1
do j = 1, nboxes
pes(j) = modulo (j-1, nprocs)
end do
do nbox=1, nboxes
print '(20i4)', nbox, nbx(:,nbox)
end do
do j = 0, nprocs-1
print '(i4,20l4)', j, spread (pes==j,dim=1,ncopies=n_obstype)
print '(20i4)', j, &
sum (nbx,dim=2,mask=spread (pes==j,dim=1,ncopies=n_obstype)), &
shape (sum (nbx,dim=2,mask=spread (pes==j,dim=1,ncopies=n_obstype)))
end do
end program gfcbug115
gfortran 4.7 svn rev. 181390:
1 1 1
0 T T
0 1 1
gfortran 4.6 and earlier:
1 1 1
0 T T
0 1 1 2
The latter is correct.
