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program file_41
implicit none
integer :: unit, ios
character(len=*), parameter :: fname = "test_stream.txt"
character(len=*), parameter :: expected = "build"
character(len=len(expected)) :: found
! ---- Write ----
open(newunit=unit, file=fname, access="stream", action="write", iostat=ios)
if (ios /= 0) error stop "open(write) failed"
write(unit, iostat=ios) expected
if (ios /= 0) error stop "write failed"
close(unit)
! ---- Read back ----
open(newunit=unit, file=fname, access="stream", action="read", iostat=ios)
if (ios /= 0) error stop "open(read) failed"
read(unit, iostat=ios) found
if (ios /= 0) error stop "read failed"
close(unit)
! ---- Verify ----
if (found /= expected) then
print *, "EXPECTED:", expected
print *, "FOUND: ", found
error stop "content mismatch"
end if
! ---- Delete file ----
open(newunit=unit, file=fname, status="old", iostat=ios)
if (ios /= 0) error stop "reopen for delete failed"
close(unit, status="delete")
print *, "PASS: stream write/read/delete successful"
end program file_41
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