[system.error.syn] Use \libglobal for indexing

Author: jensmaurer

source/diagnostics.tex

@@ -713,9 +713,6 @@
 \indexlibraryglobal{error_code}%
 \indexlibraryglobal{error_condition}%
 \indexlibraryglobal{system_error}%
-\indexlibraryglobal{is_error_code_enum}%
-\indexlibraryglobal{is_error_condition_enum}%
-\indexlibraryglobal{errc}%
 \begin{codeblock}
 #include <compare>              // see \ref{compare.syn}
 
@@ -729,12 +726,12 @@
   class system_error;
 
   template<class T>
-    struct is_error_code_enum : public false_type {};
+    struct @\libglobal{is_error_code_enum}@ : public false_type {};
 
   template<class T>
-    struct is_error_condition_enum : public false_type {};
+    struct @\libglobal{is_error_condition_enum}@ : public false_type {};
 
-  enum class errc {                                                     // freestanding
+  enum class @\libglobal{errc}@ {                                                     // freestanding
     address_family_not_supported,       // \tcode{EAFNOSUPPORT}
     address_in_use,                     // \tcode{EADDRINUSE}
     address_not_available,              // \tcode{EADDRNOTAVAIL}
@@ -837,7 +834,7 @@
 
   // \ref{syserr}, system error support
   template<class T>
-    constexpr bool is_error_code_enum_v = is_error_code_enum<T>::value;
+    constexpr bool @\libglobal{is_error_code_enum_v}@ = is_error_code_enum<T>::value;
   template<class T>
     constexpr bool is_error_condition_enum_v = is_error_condition_enum<T>::value;
 }