OpenEuphoria

1. ver. 4.0 FILE I/O BUG

• Posted by bernie Dec 17, 2008
• 1056 views

-- This is a example of a program for ver. 4.0 
-- You will find that if a file is open and you try to 
-- open it a second time that OPEN will return a -1 ( fail ). 
-- This does not happen if you use ver. 3.1 
-- If you commment out the include and run the same code 
-- using ver. 3.1; You will see the difference.   
-- 
include std/io.e 
-- 
integer hFile 
-- Create a junk file 
hFile = open("junkfile","w") 
-- Check to see if file open ok. 
if hFile = -1 then puts(1,"junkfile failed to OPEN\n") end if 
-- Write to the open file. 
puts(hFile,"Write some junk to the file\n") 
-- Try to open file again ! 
hFile = open("junkfile","w") 
-- Check to see if file stayed open ! 
if hFile = -1 then 
  puts(1,"junkfile FAILED to STAY OPEN\n") 
else 
  puts(1,"File should still be open\n") 
end if 
-- Pause to for view display. 
if getc(0) then end if 
-- Close the file. 
close(hFile) 
 

3. Re: ver. 4.0 FILE I/O BUG

• Posted by ChrisB (moderator) Dec 17, 2008
• 1001 views
• Last edited Dec 18, 2008

Hi

Should you be able to open an already opened file a second time, without closing it first? Imagine the case where you opened a file for "r", then opened it for "w" - the file being read would be reset to empty before being written too.

IMHO, trying to open an already open file should return -1

Chris

5. Re: ver. 4.0 FILE I/O BUG

• Posted by bernie Dec 17, 2008
• 1020 views
• Last edited Dec 18, 2008

Thats the way it works on VER 3.1 and Jim said thats the way it works on Linux.

7. Re: ver. 4.0 FILE I/O BUG

• Posted by DerekParnell (admin) Dec 17, 2008
• 1024 views
• Last edited Dec 18, 2008

-- This is a example of a program for ver. 4.0 
-- You will find that if a file is open and you try to 
-- open it a second time that OPEN will return a -1 ( fail ). 
-- This does not happen if you use ver. 3.1 
-- If you commment out the include and run the same code 
-- using ver. 3.1; You will see the difference.   

It sounds to me that the bug in in v3 and not v4. Only one process at a time should have a file open for output.