[BUG] fopen(..., "a") does not seek to end of file until some write operation

Fri Nov 13 20:51:00 GMT 2009

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According to Salvador Fandino on 11/13/2009 1:36 PM:
> Hii
>> Using ftell() after fopen(..., "a") returns 0 even when the file open for appending is not empty. AFAIK, it should return the size of the file.

Not a bug. POSIX allows this behavior, and Linux does it as well. POSIX
also allows BSD behavior of seeking to the end, although this is less
friendly to reading back a file opened with fopen(...,"a+"). So portable
programs can't expect either situation, and you MUST use fseek when
opening for append if you expect a particular position.
- --
Don't work too hard, make some time for fun as well!
Eric Blake ebb9@byu.net
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