[PATCH v1] libstdc++: Set FMT for complete C++23 mdspan.

[Luc Grosheintz]

libstdc++-v3/ChangeLog:

        * include/bits/version.def (mdspan): Set to 202207 and remove
        no_stdname.
        * include/bits/version.h: Regenerate.
        * testsuite/23_containers/mdspan/mdspan_ftm.cc: Test presence
        of FTM.

Signed-off-by: Luc Grosheintz <luc.groshei...@gmail.com>
---
 libstdc++-v3/include/bits/version.def                     | 3 +--
 libstdc++-v3/include/bits/version.h                       | 3 ++-
 libstdc++-v3/testsuite/23_containers/mdspan/mdspan_ftm.cc | 6 ++++++
 3 files changed, 9 insertions(+), 3 deletions(-)
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/mdspan_ftm.cc

diff --git a/libstdc++-v3/include/bits/version.def 
b/libstdc++-v3/include/bits/version.def
index f4ba501c403..ad909afd20e 100644
--- a/libstdc++-v3/include/bits/version.def
+++ b/libstdc++-v3/include/bits/version.def
@@ -1007,9 +1007,8 @@ ftms = {
 
 ftms = {
   name = mdspan;
-  no_stdname = true; // FIXME: remove
   values = {
-    v = 1; // FIXME: 202207
+    v = 202207;
     cxxmin = 23;
   };
 };
diff --git a/libstdc++-v3/include/bits/version.h 
b/libstdc++-v3/include/bits/version.h
index dc8ac07be16..72f9231846e 100644
--- a/libstdc++-v3/include/bits/version.h
+++ b/libstdc++-v3/include/bits/version.h
@@ -1126,8 +1126,9 @@
 
 #if !defined(__cpp_lib_mdspan)
 # if (__cplusplus >= 202100L)
-#  define __glibcxx_mdspan 1L
+#  define __glibcxx_mdspan 202207L
 #  if defined(__glibcxx_want_all) || defined(__glibcxx_want_mdspan)
+#   define __cpp_lib_mdspan 202207L
 #  endif
 # endif
 #endif /* !defined(__cpp_lib_mdspan) && defined(__glibcxx_want_mdspan) */
diff --git a/libstdc++-v3/testsuite/23_containers/mdspan/mdspan_ftm.cc 
b/libstdc++-v3/testsuite/23_containers/mdspan/mdspan_ftm.cc
new file mode 100644
index 00000000000..fc528293e66
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/mdspan/mdspan_ftm.cc
@@ -0,0 +1,6 @@
+// { dg-do compile { target c++23 } }
+#include <mdspan>
+
+#ifndef __cpp_lib_mdspan
+#error "Missing FTM"
+#endif
-- 
2.49.0