Re: [Bug-gnulib] Patch proposal: 1-gary-safe-xfree.patch

[Bruno Haible]

Paul Eggert wrote:

> > This is too conservative. This test succeeds only on glibc systems,
> > and fails on Solaris, IRIX, HP-UX, OSF/1, AIX, Woe32.
>
> OK, how about if we change it to plain '#ifndef _POSIX_VERSION'?  That
> should work on all the systems that you mentioned, except perhaps
> Woe32

#include <unistd.h>
#ifndef _POSIX_VERSION
#error "'free (NULL)' is not known to work"
#endif

succeeds on all of Linux, Solaris, IRIX, HP-UX, OSF/1, AIX, and fails on
Woe32 (mingw32, msvc) because this platform doesn't have <unistd.h>. But
the test also succeeds on SunOS 4 [1] and instead fails on NeXT [2].

So it's still not the right test against SunOS 4...

Bruno

[1] http://www.octave.org/octave-lists/archive/bug-octave.1996/msg00100.html
[2] http://www.geocrawler.com/archives/3/379/1993/11/50/2087637/