As P2286R8 and P2585R1 as now fully implemented, we now define
__cpp_lib_format_ranges feature test macro with __cpp_lib_format_ranges.
This macro is provided only in <format>.

Uses of internal __glibcxx_format_ranges are also updated.

        PR libstdc++/109162

libstdc++-v3/ChangeLog:

        * include/bits/version.def (format_ranges): Remove no_stdname and
        update value.
        * include/bits/version.h: Regenerate.
        * src/c++23/std.cc.in: Replace __glibcxx_format_ranges with
        __cpp_lib_format_ranges.
        * testsuite/std/format/formatter/lwg3944.cc: Likewise.
        * testsuite/std/format/parse_ctx.cc: Likewise.
        * testsuite/std/format/string.cc: Likewise.
        * testsuite/std/format/ranges/feature_test.cc: New test.
---
This is followup to be merged as separate commit with:
[PATCH v2] libstdc++: Implement formatters for queue, priority_queue and stack 
[PR109162]

OK for trunk and 15.2 with previous patch, once 15.1 will be released?

 libstdc++-v3/include/bits/version.def                    | 3 +--
 libstdc++-v3/include/bits/version.h                      | 3 ++-
 libstdc++-v3/src/c++23/std.cc.in                         | 6 ++----
 libstdc++-v3/testsuite/std/format/formatter/lwg3944.cc   | 2 +-
 libstdc++-v3/testsuite/std/format/parse_ctx.cc           | 2 +-
 libstdc++-v3/testsuite/std/format/ranges/feature_test.cc | 9 +++++++++
 libstdc++-v3/testsuite/std/format/string.cc              | 2 +-
 7 files changed, 17 insertions(+), 10 deletions(-)
 create mode 100644 libstdc++-v3/testsuite/std/format/ranges/feature_test.cc

diff --git a/libstdc++-v3/include/bits/version.def 
b/libstdc++-v3/include/bits/version.def
index 0afaf0dec24..737b3f421bf 100644
--- a/libstdc++-v3/include/bits/version.def
+++ b/libstdc++-v3/include/bits/version.def
@@ -1416,9 +1416,8 @@ ftms = {
   // 202207 P2286R8 Formatting Ranges
   // 202207 P2585R1 Improving default container formatting
   // LWG3750 Too many papers bump __cpp_lib_format
-  no_stdname = true; // TODO remove
   values = {
-    v = 1; // TODO 202207
+    v = 202207;
     cxxmin = 23;
     hosted = yes;
   };
diff --git a/libstdc++-v3/include/bits/version.h 
b/libstdc++-v3/include/bits/version.h
index 980fee641e9..59ff0cee043 100644
--- a/libstdc++-v3/include/bits/version.h
+++ b/libstdc++-v3/include/bits/version.h
@@ -1562,8 +1562,9 @@
 
 #if !defined(__cpp_lib_format_ranges)
 # if (__cplusplus >= 202100L) && _GLIBCXX_HOSTED
-#  define __glibcxx_format_ranges 1L
+#  define __glibcxx_format_ranges 202207L
 #  if defined(__glibcxx_want_all) || defined(__glibcxx_want_format_ranges)
+#   define __cpp_lib_format_ranges 202207L
 #  endif
 # endif
 #endif /* !defined(__cpp_lib_format_ranges) && 
defined(__glibcxx_want_format_ranges) */
diff --git a/libstdc++-v3/src/c++23/std.cc.in b/libstdc++-v3/src/c++23/std.cc.in
index 5e18ad73908..6da6d382914 100644
--- a/libstdc++-v3/src/c++23/std.cc.in
+++ b/libstdc++-v3/src/c++23/std.cc.in
@@ -1315,8 +1315,7 @@ export namespace std
   using std::format_to_n;
   using std::format_to_n_result;
   using std::formatted_size;
-// FIXME __cpp_lib_format_ranges
-#if __cplusplus > 202002L
+#if __cpp_lib_format_ranges
   using std::formattable;
 #endif
   using std::formatter;
@@ -1332,8 +1331,7 @@ export namespace std
   using std::wformat_context;
   using std::wformat_parse_context;
   using std::wformat_string;
-// FIXME __cpp_lib_format_ranges
-#ifdef __glibcxx_format_ranges
+#ifdef __cpp_lib_format_ranges
   using std::format_kind;
   using std::range_format;
   using std::range_formatter;
diff --git a/libstdc++-v3/testsuite/std/format/formatter/lwg3944.cc 
b/libstdc++-v3/testsuite/std/format/formatter/lwg3944.cc
index 1f3edc9cb03..07e63af5652 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/lwg3944.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/lwg3944.cc
@@ -18,7 +18,7 @@ void test_lwg3944()
   std::format(L"{}", "hello"); // { dg-error "here" }
   std::format(L"{}", std::string_view("hello")); // { dg-error "here" }
   std::format(L"{}", std::string("hello")); // { dg-error "here" }
-#ifdef __glibcxx_format_ranges
+#ifdef __cpp_lib_format_ranges
   // LWG 3944 does not change this, it's still valid.
   std::format(L"{}", std::vector{'h', 'e', 'l', 'l', 'o'});
 #endif
diff --git a/libstdc++-v3/testsuite/std/format/parse_ctx.cc 
b/libstdc++-v3/testsuite/std/format/parse_ctx.cc
index b338ac7b762..b5dd7cdba78 100644
--- a/libstdc++-v3/testsuite/std/format/parse_ctx.cc
+++ b/libstdc++-v3/testsuite/std/format/parse_ctx.cc
@@ -108,7 +108,7 @@ is_std_format_spec_for(std::string_view spec)
   }
 }
 
-#if __glibcxx_format_ranges
+#if __cpp_lib_format_ranges
 constexpr bool escaped_strings_supported = true;
 #else
 constexpr bool escaped_strings_supported = false;
diff --git a/libstdc++-v3/testsuite/std/format/ranges/feature_test.cc 
b/libstdc++-v3/testsuite/std/format/ranges/feature_test.cc
new file mode 100644
index 00000000000..80d2cea80ca
--- /dev/null
+++ b/libstdc++-v3/testsuite/std/format/ranges/feature_test.cc
@@ -0,0 +1,9 @@
+// { dg-do preprocess { target c++23 } }
+
+#include <format>
+
+#ifndef __cpp_lib_format_ranges
+# error "Feature-test macro __cpp_lib_format_ranges missing in <format>"
+#elif __cpp_lib_format_ranges != 202207L
+# error "Feature-test macro __cpp_lib_format_ranges has wrong value in 
<format>"
+#endif
diff --git a/libstdc++-v3/testsuite/std/format/string.cc 
b/libstdc++-v3/testsuite/std/format/string.cc
index 76614d4bc3e..ee987a15ec3 100644
--- a/libstdc++-v3/testsuite/std/format/string.cc
+++ b/libstdc++-v3/testsuite/std/format/string.cc
@@ -62,7 +62,7 @@ test_indexing()
   VERIFY( ! is_format_string_for("{} {0}", 1) );
 }
 
-#if __glibcxx_format_ranges
+#if __cpp_lib_format_ranges
 constexpr bool escaped_strings_supported = true;
 #else
 constexpr bool escaped_strings_supported = false;
-- 
2.49.0

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