[Patch, libfortran] PR47375 GETLOG thread safety

[Rainer Orth]

Hi Tobias,

> I have filled a tracking bug: PR 47491.

Thanks.

> And I have a question to you, Rainer: There are similar patches for ctime_r
> and for ttyname_r. Do they work as is on Solaris or is also special care
> required?
>
> See: http://gcc.gnu.org/ml/fortran/2011-01/msg00225.html and
> http://gcc.gnu.org/ml/fortran/2011-01/msg00224.html

The only difference between the two ttyname_r variants is:

* full standard:

  extern int ttyname_r(int, char *, size_t);

* draft standard:

  extern char *ttyname_r(int, char *, int);

For ctime_r it's worse:

* full standard:

  extern char *ctime_r(const time_t *, char *);

* draft standards:

  extern char *ctime_r(const time_t *, char *, int);

So we should simply make sure that the standard versions are used.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University