1) Incorrect writing of formated files:
nrp = 70 000 000
open(1, file = 'tst.dat')
do i = 1, nrp
write(1, '(6i10)') (i, k=1,6)
enddo
close(1)
end
When file size reaches 2Gb, the last record is not added to file, but
overwrites the previous one. As a result, the second half of information is
lost.
Incorrect reading. When the previous code has bee compiled with Absoft
compiler, and the tst.dat file has been correctly created, the following code
has beed compiled with gfortran and run.
integer rd(6)
nrp = 70 000 000
open(1, file = 'tst.dat')
do i = 1, nrp
read(1, '(6i10)') rd
do k = 1, 6
if (rd(k) /= i) then
write(*,*) i
write(*,*) rd
stop
endif
enddo
enddo
close(1)
end
It has reported error reading record 34636835. The read line was:
34636835 346334 0 0 0 0
Therefore, it is impossible to read files greater than 2 Gb.
--
Summary: Incorrectly writes/reads formatted ASCII files greater
than 2Gb
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: apotapov at math dot ualberta dot ca
GCC build triplet: Same
GCC host triplet: Windows XP Pro, Core2Quad Q6600, 2Gb RAM
GCC target triplet: Same
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40812
