!{ dg-do run } ! PR26464 File I/O error related to buffering and BACKSPACE ! Test case derived from case by Dale Ranta. ! Submitted by Jerry DeLisle program test integer,parameter :: datasize = 1000 dimension idata(datasize) idata = -42 open (11, status="scratch", form="unformatted") idata(1) = -1 idata( datasize) = -2 write(11)idata idata(1) = -2 idata( datasize) = -3 write(11)idata idata(1) = -3 idata( datasize) = -4 write(11)idata idata(1) = -4 idata( datasize) = -5 write(11)idata read(11,end= 1000 )idata call abort() 1000 continue backspace 11 backspace 11 backspace 11 read(11,end= 1001 )idata if(idata(1).ne.-3 .or. idata(datasize).ne.-4) call abort() stop 1001 continue call abort() 1010 stop end