[Patch: libcpp, c-family, Fortran] Re: Warning about __DATE__ and __TIME__

[Tobias Burnus]

Tobias Burnus wrote:
> Gerald Pfeifer wrote:
>> To make it easier to reproduce builds of software and entire GNU/Linux
>> distributions, RMS had the idea of adding a warning to GCC that warns
>> about the use of __DATE__ and __TIME__.
>
> I assume that he also likes to have a warning for __TIMESTAMP__.
>
>> I was thinking a new warning -Wdate-time or similar could address
>> this. Any volunteers implementing this?
> Do you mean something like the attached patch? (Only lightly tested.)

Updated version attached – after bootstrapping and regtesting on 
x86-64-gnu-linux
OK?

Tobias
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