[PATCH] PR libstdc++/78179 run long double tests separately

[Christophe Lyon]

On Mon, 3 Sep 2018 at 16:54, Jonathan Wakely <jwakely@redhat.com> wrote:
>
> Split the long double testing into a separate file, so that we can XFAIL
> targets where the long double precision doesn't meet the expected
> tolerances. The float and double tests are still expefted to PASS for
> all targets.
>
>         PR libstdc++/78179
>         * testsuite/26_numerics/headers/cmath/hypot-long-double.cc: New test
>         that runs the long double part of hypot.cc.
>         * testsuite/26_numerics/headers/cmath/hypot.cc: Disable long double
>         tests unless TEST_HYPOT_LONG_DOUBLE is defined.
>
> Tested x86_64-linux, committed to trunk.
>

Hi,

I have noticed failures on hypot-long-double.cc on arm, so I suggest we add:

diff --git a/libstdc++-v3/testsuite/26_numerics/headers/cmath/hypot-long-double.cc
b/libstdc++-v3/testsuite/26_numerics/headers/cmath/hypot-long-double.cc
index 8a05473..4c2e33b 100644
--- a/libstdc++-v3/testsuite/26_numerics/headers/cmath/hypot-long-double.cc
+++ b/libstdc++-v3/testsuite/26_numerics/headers/cmath/hypot-long-double.cc
@@ -17,7 +17,7 @@

 // { dg-options "-std=gnu++17" }
 // { dg-do run { target c++17 } }
-// { dg-xfail-run-if "PR 78179" { powerpc-ibm-aix* hppa-*-linux* nios2-*-* } }
+// { dg-xfail-run-if "PR 78179" { powerpc-ibm-aix* hppa-*-linux*
nios2-*-* arm*-*-* } }

 // Run the long double tests from hypot.cc separately, because they fail on a
 // number of targets. See PR libstdc++/78179 for details.

OK?

Christophe