[patch,fortran] Fix corner case where consecutive calls to date_and_time can return times out of sequence (PR30015)

[Andreas Schwab]

Tobias Burnus <burnus@net-b.de> writes:

> Hi Andreas, hi all,
>
>
> +#if HAVE_GETTIMEOFDAY  [...]
> +#if GETTIMEOFDAY_ONE_ARGUMENT
> +    if (!gettimeofday (&tp))
> +#else [...]
> +#if HAVE_STRUCT_TIMEZONE
> +    if (!gettimeofday (&tp, &tzp))
> +#else
> +    if (!gettimeofday (&tp, (void *) 0))
> +#endif /* HAVE_STRUCT_TIMEZONE  */
>
> Andreas Schwab wrote:
>> The timezone information is never used, why not always passing NULL for
>> it?  This is the only use of gettimeofday in libgfortran, it would also
>> make it possible to eliminate a runtime configure check.
>>   
> I don't know what you mean by runtime configure check.

AC_TRY_RUN.  Runtime checks are bad for cross compiling.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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