[PATCH] libstdc++: testsuite: fs rename to self may fail

[Alexandre Oliva]

On Jun 23, 2022, Jonathan Wakely <jwakely@redhat.com> wrote:

>> Regstrapped on x86_64-linux-gnu, also tested with a cross to
>> aarch64-rtems6.  Ok to install?

> OK, thanks.

Sorry, I failed to refresh this one too.
Here's what I'm going to install:

libstdc++: xfail rename tests on rtems

From: Alexandre Oliva <oliva@adacore.com>

::rename on RTEMS does not meet several POSIX requirements, despite
compliance with C and C++ standards.  ::std::filesystem::rename, in
turn, has requirements borrowed from POSIX, so it would have to be a
lot more than a simple wrapper around ::rename on RTEMS, and even then
fall short.

Until RTEMS reimplements ::rename for POSIX compliance, expect
filesystem rename tests to fail on it.


for  libstdc++-v3/ChangeLog

	* testsuite/27_io/filesystem/operations/rename.cc: xfail on
	rtems.
	* testsuite/experimental/filesystem/operations/rename.cc:
	Likewise.
---
 .../27_io/filesystem/operations/rename.cc          |    1 +
 .../experimental/filesystem/operations/rename.cc   |    1 +
 2 files changed, 2 insertions(+)

diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/rename.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/rename.cc
index b74e1133a7618..983374f42e448 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/rename.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/rename.cc
@@ -17,6 +17,7 @@
 
 // { dg-do run { target c++17 } }
 // { dg-require-filesystem-ts "" }
+// { dg-xfail-run-if "rename is not POSIX-compliant" { *-*-rtems* } }
 
 #include <filesystem>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/rename.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/rename.cc
index 37e743b770fdf..762b943888f9e 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/rename.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/rename.cc
@@ -18,6 +18,7 @@
 // { dg-options "-DUSE_FILESYSTEM_TS -lstdc++fs" }
 // { dg-do run { target c++11 } }
 // { dg-require-filesystem-ts "" }
+// { dg-xfail-run-if "rename is not POSIX-compliant" { *-*-rtems* } }
 
 #include <experimental/filesystem>
 #include <testsuite_hooks.h>


-- 
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>