Hello,
We found a quite strange behaviour of the gfortran 4.5.3 for
the following five examples. The first one shows heavily
increasing memomry consuption over runtime.
The error happens during the read command.
The other 4 exmples are okay.
1. example
program test1
character*200 test
REAL*8 vout
test='NH'
10 continue
read (test,*,end=20,err=22) vout
22 continue
write(*,*) vout," error"
goto 10
20 continue
write(*,*) vout
goto 10
end
#output: 6.90740463938966731E-310 .....
#heavily increasing memory
2. example
program test1
character*200 test
integer vout
test='NH'
10 continue
read (test,*,end=20,err=22) vout
22 continue
write(*,*) vout," error"
goto 10
20 continue
write(*,*) vout
goto 10
end
#output: 32750 error ....
3. example
program test1
character*200 test
integer vout
test='2'
10 continue
read (test,*,end=20,err=22) vout
22 continue
write(*,*) vout," error"
goto 10
20 continue
write(*,*) vout
goto 10
end
#output: 2 .....
#memory okay
4. example
program test1
character*200 test
REAL*8 vout
test='2'
10 continue
read (test,*,end=20,err=22) vout
22 continue
* write(*,*) vout," error"
goto 10
20 continue
write(*,*) vout
goto 10
end2.0000000000000000
#output: 2.0000000000000000 .....
#memory okay
5. example
program test1
character*200 test
REAL*8 vout
test='NH' 10 continue
read (test,'(F6.4)',end=20,err=22) vout
22 continue
write(*,*) vout," error"
goto 10
20 continue
write(*,*) vout
goto 10
end
#output: 6.94129341886360735E-310 .....
#memory okay
The system is x86_64 running gentoo.
The results didnt change for different libc, gcc versions and also
for different compiler flags.
Can anyone please help? Many thanks!
--
Plänitz
www.matcalc.de
