reassign 626983 manpages-dev 3.27-1
# documentation
severity 626983 minor
retitle 626983 fclose.3: please clarify stream state after fclose
quit
Hi,
julien godin wrote:
> As described in the subject, the ferror() function return no error even if
> the stream as been previously closed
As the POSIX[1] documentation for fclose() says:
After the call to fclose(), any use of stream results in undefined
behavior.
Similarly, C99[2] says
The value of a pointer to a FILE object is indeterminate after the
associated file is closed.
which is earlier defined to mean
either an unspecified value or a trap representation
If you'd like that last behavior ("trap representation") in order to
catch bugs, valgrind can help.
I'm reassigning to manpages-dev in the hope that the system
documentation for ferror and fclose can be improved to clarify this.
I imagine help with wording would be very welcome.
Thanks for reporting,
Jonathan
[1] http://unix.org/2008edition/ (free registration required)
[2] http://www.open-std.org/jtc1/sc22/wg14/www/standards.html#9899
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