[gcc r11-8570] libstdc++: Only run Filesystem TS test if supported

[Jonathan Wakely]

https://gcc.gnu.org/g:ded9ba1c0624d729456a65468a0f9c7b24b2d9cf

commit r11-8570-gded9ba1c0624d729456a65468a0f9c7b24b2d9cf
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Jun 14 14:22:07 2021 +0100

    libstdc++: Only run Filesystem TS test if supported
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
            Add dg-require-filesystem-ts directive.
    
    (cherry picked from commit a40d2293a7a417fc7711f8f4e52dbd4c48c2a43f)

Diff:
---
 libstdc++-v3/testsuite/experimental/filesystem/path/native/conv_c++23.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/testsuite/experimental/filesystem/path/native/conv_c++23.cc b/libstdc++-v3/testsuite/experimental/filesystem/path/native/conv_c++23.cc
index f3c3f884965..81f57549ac9 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/path/native/conv_c++23.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/path/native/conv_c++23.cc
@@ -1,5 +1,6 @@
 // { dg-options "-std=gnu++23" }
 // { dg-do compile { target c++23 } }
+// { dg-require-filesystem-ts "" }
 
 #include <experimental/filesystem>