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Re: [PATCHES] Bad bug in fopen() wrapper code

This is a discussion on Re: [PATCHES] Bad bug in fopen() wrapper code within the pgsql Hackers forums, part of the PostgreSQL category; --> "Claudio Natoli" <claudio.natoli@memetrics.com> writes: > Magnus Hagander writes: >> Now, I still twist my head around the lines: >> ...


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Old 04-12-2008, 06:03 AM
Tom Lane
 
Posts: n/a
Default Re: [PATCHES] Bad bug in fopen() wrapper code

"Claudio Natoli" <claudio.natoli@memetrics.com> writes:
> Magnus Hagander writes:
>> Now, I still twist my head around the lines:
>> if ((fd = _open_osfhandle((long) h, fileFlags & O_APPEND)) < 0
>> ||
>> (fileFlags & (O_TEXT | O_BINARY) && (_setmode(fd,
>> fileFlags & (O_TEXT | O_BINARY)) < 0)))


> Without having studied it closely, it might also highlight a bug on failure of the second clause -- if the _setmode fails, shouldn't _close be called instead of CloseHandle, and -1 returned? (CloseHandle would still be called on failure of the _open_osfhandle, obviously)


I agree that this code is both wrong and unreadable (although in
practice the _setmode will probably never fail, which is why our
attention hasn't been drawn to it). Is someone going to submit a
patch? I'm hesitant to change the code myself since I'm not in
a position to test it.

regards, tom lane

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