On Jun 22, 2022, Jonathan Wakely <[email protected]> wrote:
> This could be done once in testsuite_fs.h as well.
Done. Erhm, I posted the new revision of the patch for this thread in
the last_write_time thread, so I'm posting the last_write_time one here.
This one also depends on dg infrastructure added in the NO_SYMLINKS patch.
Regstrapped on x86_64-linux-gnu, also tested with a cross to
aarch64-rtems6. Ok to install?
libstdc++: testsuite: skip fs last_write_time tests if dummy
The last_write_time functions are defined in ways that are useful, or
that fail immediately, depending on various macros. When they fail
immediately, the filesystem last_write_time.cc tests fail noisily, but
the fail is entirely expected.
Define NO_LAST_WRITE_TIME in the last_write_time.cc tests, according
to the macros that select implementations of last_write_time, and use
it through the new dg-require-target-fs-lwt to skip tests that are
expected to fail.
for libstdc++-v3/ChangeLog
* testsuite/util/testsuite_fs.h (NO_LAST_WRITE_TIME): Define
when appropriate.
* testsuite/lib/libstdc++.exp
(check_v3_target_fs_last_write_time): New.
* testsuite/lib/dg-options.exp (dg-require-target-fs-lwt):
New.
* testsuite/27_io/filesystem/operations/last_write_time.cc:
Skip the test if the features are unavailable.
* testsuite/experimental/filesystem/operations/last_write_time.cc:
Likewise.
---
.../27_io/filesystem/operations/last_write_time.cc | 1 +
.../filesystem/operations/last_write_time.cc | 1 +
libstdc++-v3/testsuite/lib/dg-options.exp | 9 +++++++++
libstdc++-v3/testsuite/lib/libstdc++.exp | 8 ++++++++
libstdc++-v3/testsuite/util/testsuite_fs.h | 5 +++++
5 files changed, 24 insertions(+)
diff --git
a/libstdc++-v3/testsuite/27_io/filesystem/operations/last_write_time.cc
b/libstdc++-v3/testsuite/27_io/filesystem/operations/last_write_time.cc
index 7d6468a512424..f6460fb83d70d 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/last_write_time.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/last_write_time.cc
@@ -17,6 +17,7 @@
// { dg-do run { target c++17 } }
// { dg-require-filesystem-ts "" }
+// { dg-require-target-fs-lwt "" }
// 15.25 Permissions [fs.op.last_write_time]
diff --git
a/libstdc++-v3/testsuite/experimental/filesystem/operations/last_write_time.cc
b/libstdc++-v3/testsuite/experimental/filesystem/operations/last_write_time.cc
index 38fafc392ca9e..a0bf01ea935c5 100644
---
a/libstdc++-v3/testsuite/experimental/filesystem/operations/last_write_time.cc
+++
b/libstdc++-v3/testsuite/experimental/filesystem/operations/last_write_time.cc
@@ -18,6 +18,7 @@
// { dg-options "-DUSE_FILESYSTEM_TS -lstdc++fs" }
// { dg-do run { target c++11 } }
// { dg-require-filesystem-ts "" }
+// { dg-require-target-fs-lwt "" }
// 15.25 Permissions [fs.op.last_write_time]
diff --git a/libstdc++-v3/testsuite/lib/dg-options.exp
b/libstdc++-v3/testsuite/lib/dg-options.exp
index 81bb8f448bd44..b61c4c0cb8fcd 100644
--- a/libstdc++-v3/testsuite/lib/dg-options.exp
+++ b/libstdc++-v3/testsuite/lib/dg-options.exp
@@ -259,6 +259,15 @@ proc dg-require-target-fs-space { args } {
return
}
+proc dg-require-target-fs-lwt { args } {
+ if { ![ check_v3_target_fs_last_write_time ] } {
+ upvar dg-do-what dg-do-what
+ set dg-do-what [list [lindex ${dg-do-what} 0] "N" "P"]
+ return
+ }
+ return
+}
+
proc add_options_for_no_pch { flags } {
# This forces any generated and possibly included PCH to be invalid.
return "-D__GLIBCXX__=99999999"
diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp
b/libstdc++-v3/testsuite/lib/libstdc++.exp
index 22fdde8d66374..ca515c6f3548b 100644
--- a/libstdc++-v3/testsuite/lib/libstdc++.exp
+++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
@@ -1286,6 +1286,14 @@ proc check_v3_target_fs_space { } {
return [v3_check_preprocessor_condition fs_space $cond $inc]
}
+# Return 1 if the libstdc++ filesystem implementation of
+# last_write_time is not an always-failing dummy.
+proc check_v3_target_fs_last_write_time { } {
+ set inc "#include <testsuite_fs.h>"
+ set cond "!defined NO_LAST_WRITE_TIME"
+ return [v3_check_preprocessor_condition fs_last_write_time $cond $inc]
+}
+
# Return 1 if the "cxx11" ABI is in use using the current flags, 0 otherwise.
# Any flags provided by RUNTESTFLAGS or a target board will be used here.
# Flags added in the test by dg-options or dg-add-options will not be used.
diff --git a/libstdc++-v3/testsuite/util/testsuite_fs.h
b/libstdc++-v3/testsuite/util/testsuite_fs.h
index 89042e5534139..037d9ffc0f429 100644
--- a/libstdc++-v3/testsuite/util/testsuite_fs.h
+++ b/libstdc++-v3/testsuite/util/testsuite_fs.h
@@ -52,6 +52,11 @@ namespace test_fs = std::experimental::filesystem;
#define NO_SPACE
#endif
+#if !(_GLIBCXX_HAVE_SYS_STAT_H \
+ && (_GLIBCXX_USE_UTIMENSAT || _GLIBCXX_USE_UTIME))
+#define NO_LAST_WRITE_TIME 1
+#endif
+
namespace __gnu_test
{
#define PATH_CHK(p1, p2, fn) \
--
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>
