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

[Jakub Jelinek]

On Thu, Jun 02, 2016 at 04:49:59PM +0200, Christophe Lyon wrote:
> I'm also seeing that the new gcc.dg/cpp/source_date_epoch-1.c fails because
> the output pattern finishes with '\n' instead of the usual '(\n|\r\n|\r)'
> 
> Can I add this as obvious?

Some remote test invocations even eat the final newline from what I vaguely
remember from various complains about the asan and ubsan testsuite.

So we could just drop that ^ and \n$ from dg-output, but then, what is the
point of using dg-output at all here?

Isn't following just better?  Tested on x86_64-linux, ok for trunk?

2016-06-02  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/cpp/source_date_epoch-1.c (main): Test __DATE__ and
	__TIME__ strings with __builtin_strcmp instead of printf and
	dg-output.

--- gcc/testsuite/gcc.dg/cpp/source_date_epoch-1.c.jj	2016-06-01 21:26:27.000000000 +0200
+++ gcc/testsuite/gcc.dg/cpp/source_date_epoch-1.c	2016-06-02 17:02:06.164281564 +0200
@@ -2,10 +2,10 @@
 /* { dg-set-compiler-env-var SOURCE_DATE_EPOCH "630333296" } */
 
 int
-main(void)
+main ()
 {
-  __builtin_printf ("%s %s\n", __DATE__, __TIME__);
+  if (__builtin_strcmp (__DATE__, "Dec 22 1989") != 0
+      || __builtin_strcmp (__TIME__, "12:34:56") != 0)
+    __builtin_abort ();
   return 0;
 }
-
-/* { dg-output "^Dec 22 1989 12:34:56\n$" } */


	Jakub