The following program computes the wrong result for a WHERE where
different sections of the same array are in both the WHERE and
ELSEWHERE section. It's "as if" the ELSEWHERE block were
ignored.
Dick Hendrickson
program RG0023
! fails on Windows XP
! gcc version 4.4.0 20080312 (experimental) [trunk revision 133139]
integer UDA1L(6)
integer :: UDA1R(6), expected(6) = (/2,0,5,0,3,0/)
LOGICAL LDA(5)
UDA1L(1:6) = 0
uda1r = (/1,2,3,4,5,6/)
lda = (/ (i/2*2 .ne. I, i=1,5) /)
WHERE (LDA) ! expected
UDA1L(1:5) = UDA1R(2:6) ! uda1l = 2,0,4,0,6,0
ELSEWHERE
UDA1L(2:6) = UDA1R(6:2:-1) !uda1l = 2,0,5,0,3,0
ENDWHERE
print *, 'expected = ',expected
print *, 'computed = ', uda1l
END
gfortran:gfortran rg0023.f
gfortran:a
expected = 2 0 5 0 3
0
computed = 2 0 4 0 6
0
--
Summary: WHERE with overlap with ELSEWHERE error
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dick dot hendrickson at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35759
