When long double is wider than double, but from_chars is implemented
in terms of double, tests that involve the full precision of long
double are expected to fail.  Mark them as such on x86_64-*-vxworks*.

Tested on x86_64-vxworks7r2 with gcc-12.  Ok to install?


for  libstdc++-v3/ChangeLog

        * testsuite/20_util/from_chars/4.cc: Skip long double test06
        on x86_64-vxworks.
        * testsuite/20_util/to_chars/long_double.cc: Xfail run on
        x86_64-vxworks.
---
 libstdc++-v3/testsuite/20_util/from_chars/4.cc     |    2 +-
 .../testsuite/20_util/to_chars/long_double.cc      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/20_util/from_chars/4.cc 
b/libstdc++-v3/testsuite/20_util/from_chars/4.cc
index c3594f9014bd3..63a32b511be4e 100644
--- a/libstdc++-v3/testsuite/20_util/from_chars/4.cc
+++ b/libstdc++-v3/testsuite/20_util/from_chars/4.cc
@@ -18,7 +18,7 @@
 // <charconv> is supported in C++14 as a GNU extension
 // { dg-do run { target c++14 } }
 // { dg-add-options ieee }
-// { dg-additional-options "-DSKIP_LONG_DOUBLE" { target aarch64-*-vxworks* } }
+// { dg-additional-options "-DSKIP_LONG_DOUBLE" { target aarch64-*-vxworks* 
x86_64-*-vxworks* } }
 
 #include <charconv>
 #include <string>
diff --git a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc 
b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
index 08363d9d04003..df02dff935f40 100644
--- a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
+++ b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
@@ -36,7 +36,7 @@
 
 // On systems that use double-precision from_chars for long double,
 // this is expected to fail.
-// { dg-xfail-run-if "from_chars limited to double-precision" { 
aarch64-*-vxworks* i*86-*-vxworks* } }
+// { dg-xfail-run-if "from_chars limited to double-precision" { 
aarch64-*-vxworks* i*86-*-vxworks* x86_64-*-vxworks* } }
 
 // { dg-require-effective-target ieee_floats }
 // { dg-require-effective-target size32plus }


-- 
Alexandre Oliva, happy hacker                https://FSFLA.org/blogs/lxo/
   Free Software Activist                       GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts.  Ask me about <https://stallmansupport.org>

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