Re: [Bug-gnulib] Re: access to Solaris2.5 system? [Re: strftime merge from Emacs

[Jim Meyering]

Paul Eggert <address@hidden> wrote:
> Jim Meyering <address@hidden> writes:
>
>> +/* This is a wrapper for tzset. It is used only on systems for which
>> +   tzset may clobber the static buffer used for localtime's result.
>> +   Save and restore the contents of the buffer used for localtime's
>> +   result around the call to tzset.  */
>> +void
>> +rpl_tzset (void)
>> +{
>> +  struct tm save;
>> +
>> +  if (! localtime_buffer_addr)
>> +    {
>> +      time_t t = 0;
>> +      localtime_buffer_addr = localtime (&t);
>> +    }
>> +
>> +  save = *localtime_buffer_addr;
>> +  tzset ();
>> +  *localtime_buffer_addr = save;
>>  }
>
> Don't we still have the problem the first time that rpl_tzset is
> called?  rpl_tzset still clobbers the localtime buffer in that case.

Yes, but who could be using it if no one has called localtime yet?