[Libreoffice] Fwd: warning: the use of `tmpnam' is dangerous, better use `mkstemp'
serval2412 at yahoo.fr
Sat Jun 11 06:37:06 PDT 2011
I leafed through the definition of createTempFile in
sal/inc/osl/file.hxx. I read this too :
"mktemp - generate temporary file name (unique)
mkstemp - also create the file
mkstemps - generate temporary file name with suffix
mkdtemp - create a directory
" and of course "no equivalent of these functions in Windows" for example.
So I thought this :
1) for common part between Windows and other systems (Unix/Linux/BSD and
Mac) or for Windows specific, only createTempFile should be used.
2) for Unix/Linux/BSD and Mac only part, mkstemp/mktemp should be used
(to avoid overhead)
So tmpnam shouldn't be used at all.
Is this ok ?
-------- Message original --------
Sujet: warning: the use of `tmpnam' is dangerous, better use `mkstemp'
Date : Thu, 09 Jun 2011 23:24:16 +0200
De : Julien Nabet <serval2412 at yahoo.fr>
Pour : libreoffice at lists.freedesktop.org
I had this warning by compiling hwpfilter during some cppcheck cleaning.
I knew nothing about it so I read some links given by Google.
It seems mkstemp is safer since it permits "to avoid race conditions".
In the Unix man of tmpnam, we can read this :
Never use this function. Use mkstemp(3) or tmpfile(3) instead.
I'm just a beginner in C++ so what's your opinion about it ?
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