[PATCH 6/6] libstdc++: Bump __cpp_lib_format value for std::runtime_format

[Jonathan Wakely]

Tested x86_64-linux.

-- >8 --

We already supported this feature, but couldn't set the feature test
macro accordingly because we were missing support for older features.
Now that we support all the older <format> changes, we can set this to
the correct value.

libstdc++-v3/ChangeLog:

        * include/bits/version.def (format): Update value for C++26.
        * include/bits/version.h: Regenerate.
        * include/std/format (runtime_format, wruntime_format): Check
        __cpp_lib_format instead of __cplusplus.
        * testsuite/std/format/functions/format.cc: Update expected
        value of macro for C++26 mode.
---
 libstdc++-v3/include/bits/version.def                 | 2 +-
 libstdc++-v3/include/bits/version.h                   | 4 ++--
 libstdc++-v3/include/std/format                       | 2 +-
 libstdc++-v3/testsuite/std/format/functions/format.cc | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/libstdc++-v3/include/bits/version.def 
b/libstdc++-v3/include/bits/version.def
index ec330911d66..ee0a9e45c44 100644
--- a/libstdc++-v3/include/bits/version.def
+++ b/libstdc++-v3/include/bits/version.def
@@ -1171,7 +1171,7 @@ ftms = {
   // 202306 P2637R3 Member visit
   // 202311 P2918R2 Runtime format strings II
   values = {
-    v = 202306;
+    v = 202311;
     cxxmin = 26;
     hosted = yes;
   };
diff --git a/libstdc++-v3/include/bits/version.h 
b/libstdc++-v3/include/bits/version.h
index 148ee87e087..cee497d7443 100644
--- a/libstdc++-v3/include/bits/version.h
+++ b/libstdc++-v3/include/bits/version.h
@@ -1310,9 +1310,9 @@
 
 #if !defined(__cpp_lib_format)
 # if (__cplusplus >  202302L) && _GLIBCXX_HOSTED
-#  define __glibcxx_format 202306L
+#  define __glibcxx_format 202311L
 #  if defined(__glibcxx_want_all) || defined(__glibcxx_want_format)
-#   define __cpp_lib_format 202306L
+#   define __cpp_lib_format 202311L
 #  endif
 # elif (__cplusplus >= 202002L) && _GLIBCXX_HOSTED
 #  define __glibcxx_format 202304L
diff --git a/libstdc++-v3/include/std/format b/libstdc++-v3/include/std/format
index f1a1f736a80..838cc18a78a 100644
--- a/libstdc++-v3/include/std/format
+++ b/libstdc++-v3/include/std/format
@@ -155,7 +155,7 @@ namespace __format
       = basic_format_string<wchar_t, type_identity_t<_Args>...>;
 #endif
 
-#if __cplusplus > 202302L
+#if __cpp_lib_format >= 202311L // >= C++26
   [[__gnu__::__always_inline__]]
   inline __format::_Runtime_format_string<char>
   runtime_format(string_view __fmt) noexcept
diff --git a/libstdc++-v3/testsuite/std/format/functions/format.cc 
b/libstdc++-v3/testsuite/std/format/functions/format.cc
index 0549d171e5a..7fc42017045 100644
--- a/libstdc++-v3/testsuite/std/format/functions/format.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/format.cc
@@ -8,7 +8,7 @@
 # error "Feature test macro for std::format is missing in <format>"
 #elif __cpp_lib_format < 202110L
 # error "Feature test macro for std::format has wrong value in <format>"
-#elif __cplusplus > 202302L && __cpp_lib_format < 202306L
+#elif __cplusplus > 202302L && __cpp_lib_format < 202311L
 # error "Feature test macro for std::format has wrong value in <format>"
 #endif
 
@@ -24,7 +24,7 @@
 # error "Feature test macro for std::format is missing in <version>"
 #elif __cpp_lib_format < 202110L
 # error "Feature test macro for std::format has wrong value in <version>"
-#elif __cplusplus > 202302L && __cpp_lib_format < 202306L
+#elif __cplusplus > 202302L && __cpp_lib_format < 202311L
 # error "Feature test macro for std::format has wrong value in <version>"
 #endif
 
-- 
2.45.2