update ceph source to reef 18.1.2

[ceph.git] / ceph / src / boost / boost / assert / source_location.hpp

diff --git a/ceph/src/boost/boost/assert/source_location.hpp b/ceph/src/boost/boost/assert/source_location.hpp
index a85e6795260ae3fbdab2431d7dbdfdcb47dceabf..dd1cfd73dd2f858ddac68380985b8d12396d7ae5 100644 (file)
--- a/ceph/src/boost/boost/assert/source_location.hpp
+++ b/ceph/src/boost/boost/assert/source_location.hpp
@@ -1,16 +1,24 @@
 #ifndef BOOST_ASSERT_SOURCE_LOCATION_HPP_INCLUDED
 #define BOOST_ASSERT_SOURCE_LOCATION_HPP_INCLUDED
 
-//  http://www.boost.org/libs/assert
+// http://www.boost.org/libs/assert
 //
-//  Copyright 2019 Peter Dimov
-//  Distributed under the Boost Software License, Version 1.0.
-//  http://www.boost.org/LICENSE_1_0.txt
+// Copyright 2019, 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/current_function.hpp>
 #include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
 #include <boost/cstdint.hpp>
 #include <iosfwd>
+#include <string>
+#include <cstdio>
+#include <cstring>
+
+#if defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L
+# include <source_location>
+#endif
 
 namespace boost
 {
@@ -26,7 +34,7 @@ private:
 
 public:
 
-    BOOST_CONSTEXPR source_location() BOOST_NOEXCEPT: file_( "(unknown)" ), function_( "(unknown)" ), line_( 0 ), column_( 0 )
+    BOOST_CONSTEXPR source_location() BOOST_NOEXCEPT: file_( "" ), function_( "" ), line_( 0 ), column_( 0 )
     {
     }
 
@@ -34,6 +42,14 @@ public:
     {
     }
 
+#if defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L
+
+    BOOST_CONSTEXPR source_location( std::source_location const& loc ) BOOST_NOEXCEPT: file_( loc.file_name() ), function_( loc.function_name() ), line_( loc.line() ), column_( loc.column() )
+    {
+    }
+
+#endif
+
     BOOST_CONSTEXPR char const * file_name() const BOOST_NOEXCEPT
     {
         return file_;
@@ -53,40 +69,94 @@ public:
     {
         return column_;
     }
-};
 
-template<class E, class T> std::basic_ostream<E, T> & operator<<( std::basic_ostream<E, T> & os, source_location const & loc )
-{
-    os.width( 0 );
+#if defined(BOOST_MSVC)
+# pragma warning( push )
+# pragma warning( disable: 4996 )
+#endif
 
-    if( loc.line() == 0 )
-    {
-        os << "(unknown source location)";
-    }
-    else
+    std::string to_string() const
     {
-        os << loc.file_name() << ':' << loc.line();
+        unsigned long ln = line();
+
+        if( ln == 0 )
+        {
+            return "(unknown source location)";
+        }
+
+        std::string r = file_name();
+
+        char buffer[ 16 ];
+
+        std::sprintf( buffer, ":%lu", ln );
+        r += buffer;
+
+        unsigned long co = column();
 
-        if( loc.column() )
+        if( co )
         {
-            os << ':' << loc.column();
+            std::sprintf( buffer, ":%lu", co );
+            r += buffer;
         }
 
-        os << ": in function '" << loc.function_name() << '\'';
+        char const* fn = function_name();
+
+        if( *fn != 0 )
+        {
+            r += " in function '";
+            r += fn;
+            r += '\'';
+        }
+
+        return r;
     }
 
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif
+
+};
+
+template<class E, class T> std::basic_ostream<E, T> & operator<<( std::basic_ostream<E, T> & os, source_location const & loc )
+{
+    os << loc.to_string();
     return os;
 }
 
 } // namespace boost
 
-#if defined( BOOST_DISABLE_CURRENT_LOCATION )
+#if defined(BOOST_DISABLE_CURRENT_LOCATION)
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location()
+
+#elif defined(BOOST_MSVC) && BOOST_MSVC >= 1926
+
+// std::source_location::current() is available in -std:c++20, but fails with consteval errors before 19.31, and doesn't produce
+// the correct result under 19.31, so prefer the built-ins
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION(), __builtin_COLUMN())
+
+#elif defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location(::std::source_location::current())
+
+#elif defined(BOOST_CLANG) && BOOST_CLANG_VERSION >= 90000
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION(), __builtin_COLUMN())
+
+#elif defined(BOOST_GCC) && BOOST_GCC >= 70000
+
+// The built-ins are available in 4.8+, but are not constant expressions until 7
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION())
+
+#elif defined(BOOST_GCC) && BOOST_GCC >= 50000
 
-#  define BOOST_CURRENT_LOCATION ::boost::source_location()
+// __PRETTY_FUNCTION__ is allowed outside functions under GCC, but 4.x suffers from codegen bugs
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, __LINE__, __PRETTY_FUNCTION__)
 
 #else
 
-#  define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, __LINE__, BOOST_CURRENT_FUNCTION)
+// __func__ macros aren't allowed outside functions, but BOOST_CURRENT_LOCATION is
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, __LINE__, "")
 
 #endif