1 GCC HEAD regressions, 1 new, with your patch on 2005-01-07T15:37:24Z.

[Andrew Pinski]

On Jan 8, 2005, at 7:04 AM, GCC regression checker wrote:

> With your recent patch, GCC HEAD has some regression test failures,
> which used to pass.  There are 1 new failures, and 0
> failures that existed before and after that patch; 0 failures
> have been fixed.
>
> The new failures are:
> native libstdc++.sum 18_support/numeric_limits.cc

I almost think this was caused by:
+2005-01-06  Geoffrey Keating  <geoffk@apple.com>
+
+	* c-cppbuiltin.c (builtin_define_float_constants): Set __*_EPSILON__
+	for IBM long double format correctly.

The error message from that failure:
/Users/regress/tbox/cvs-gcc/gcc/libstdc++-v3/testsuite/18_support/ 
numeric_limits.cc:81: failed assertion `one != (one + epsilon)'

And the code from that testcase:
template<typename T>
void test_epsilon()
{
   bool test __attribute__((unused)) = true;
   T epsilon = std::numeric_limits<T>::epsilon();
   T one = 1;

   VERIFY( one != (one + epsilon) );
}

So to me, this looks like the epsilon is not correct after this
change or is this just invoking undefined behavior (which I really
doubt it because of the definition of epsilon is what this test is
testing, well it is testing to make sure that it is at least bigger
than the real epsilon).

-- Pinski