Why doesn't tmpfile() honor $TMPDIR?

[Ulrich Drepper]

Joel Klecker <espy@debian.org> writes:

> In stdio-common/tmpfile{,64}.c, __path_search is called with the 
> fifth argument set to 0, which causes tmpfile(), and tmpfile64() to 
> use P_tmpdir.
> 
> Is there a particular reason why tmpfile() and tmpfile64() should not 
> be changed to call __path_search with the fifth argument set to 1, so 
> that the functions do honor $TMPDIR?

Yes:

- compatibility with other systems and earlier versions

- newly introduced security risks

> I am asking because there is a long-standing bug 
> ( http://www.debian.org/Bugs/db/12/12240.html ) in the Debian Bug 
> Tracking System regarding this.

This is no bug in glibc.

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