Re: Allow embedded timestamps by C/C++ macros to be set externally (3)

[Dhole <dhole at openmailbox dot org>]

On 16-04-29 09:17:44, Jakub Jelinek wrote:
> > Bernd: I'll see if I can prepare a testcase; first I need to get
> > familiar with the testing framework and learn how to set environment
> > variables in tests.  Any tips on that will be really welcome!
> 
> grep for dg-set-target-env-var in various tests.

I've been looking at how the test infrastructure works, and I'm having
some difficulties with setting the env var.

I've wrote a test case which fails (when it shouldn't) and I don't see
why.

I'm attaching the test file.

I'm running it with:
$ make check-gcc RUNTESTFLAGS=cpp.exp=source_date_epoch-1.c

What I find strange, however, is that if I set the env var from the
command line, it seems to pass:
$ SOURCE_DATE_EPOCH=123456 make check-gcc RUNTESTFLAGS=cpp.exp=source_date_epoch-1.c


P.S.: I've just sent another message to the thread with the patch
implementing the other mentioned issues.  I've mistakenly sent it from
another email account of mine: <eduardsanou@openmailbox.org>

Cheers,
-- 
Dhole

/* { dg-do run } */
/* { dg-set-target-env-var SOURCE_DATE_EPOCH "123456" } */

int
main(void)
{
  __builtin_printf ("%s %s\n", __DATE__, __TIME__);
  return 0;
}

/* { dg-output "Jan  2 1970 10:17:36" } */

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