I have used this format statement for quite a while and I don't see anything wrong with the program or data -
[dir:~/tests/gfortran] dir% gfortran -o fread01 fread01.f [dir:~/tests/gfortran] dir% fread01 < fread01.dat At line 6 of file fread01.f Fortran runtime error: Bad value during integer read [dir:~/tests/gfortran] dir% cat fread01.f program main dimension x(10),y(10),z(10) integer idt(6) character*1 it,jpr 10 read(5,1000) it,n,jpr,(idt(i),i=1,6),x(n),y(n),z(n),kn, 1 nrst,mids write (6,2002) it,n,idt,x(n),y(n),z(n),kn,nrst,mids stop 1000 format (a1,i4,a1,i4,5i5,3f10.0,3i5) 2002 format(2x,a1,2x,i5,5x,6i5,3f13.4,5x,i5,i7,i6) end [dir:~/tests/gfortran] dir% cat fread01.dat 1c 1 1 0 1 1 1 0. 1.225E-15 20.000000 1 2c 1 1 0 1 1 1 0. 1.194E-15 19.500000 1 -- Summary: incorrect run time error on formatted read Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dir at lanl dot gov CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: powerpc-apple-darwin7.8.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20108