Fix wrong null character stripping for FormatMessage (Nikita Kniazev)

system_error_test: Enable locale query on MinGW-w64

doc/system/reference.adoc

@@ -626,7 +626,7 @@ constexpr explicit operator bool() const noexcept;
 [none]
 * {blank}
 +
-Returns: :: `failed()`.
+Returns: :: `val_ != 0`.
 
 ```
 operator std::error_code() const;
@@ -789,7 +789,7 @@ constexpr explicit operator bool() const noexcept;
 [none]
 * {blank}
 +
-Returns: :: `failed()`.
+Returns: :: `val_ != 0`.
 
 ```
 operator std::error_condition() const;

include/boost/system/detail/system_category_win32.hpp

@@ -81,44 +81,60 @@ inline char const * system_category_message_win32( int ev, char * buffer, std::s
         return buffer;
     }
 
-#if defined(__GNUC__)
-# define BOOST_SYSTEM_ALLOCA __builtin_alloca
-#else
-# define BOOST_SYSTEM_ALLOCA _alloca
+    boost::winapi::UINT_ const code_page = message_cp_win32();
+
+    int r = 0;
+
+#if !defined(BOOST_NO_ANSI_APIS)
+
+    if( code_page == boost::winapi::CP_ACP_ )
+    {
+        using namespace boost::winapi;
+
+        DWORD_ retval = boost::winapi::FormatMessageA(
+            FORMAT_MESSAGE_FROM_SYSTEM_ | FORMAT_MESSAGE_IGNORE_INSERTS_,
+            NULL,
+            ev,
+            MAKELANGID_( LANG_NEUTRAL_, SUBLANG_DEFAULT_ ), // Default language
+            buffer,
+            static_cast<DWORD_>( len ),
+            NULL
+        );
+
+        r = static_cast<int>( retval );
+    }
+    else
+
 #endif
 
-    wchar_t * wbuffer = static_cast<wchar_t*>( BOOST_SYSTEM_ALLOCA( len * sizeof( wchar_t ) ) );
-
-#undef BOOST_SYSTEM_ALLOCA
-
-    using namespace boost::winapi;
-
-    DWORD_ retval = boost::winapi::FormatMessageW(
-        FORMAT_MESSAGE_FROM_SYSTEM_ | FORMAT_MESSAGE_IGNORE_INSERTS_,
-        NULL,
-        ev,
-        MAKELANGID_( LANG_NEUTRAL_, SUBLANG_DEFAULT_ ), // Default language
-        wbuffer,
-        static_cast<DWORD_>( len ),
-        NULL
-    );
-
-    if( retval == 0 )
     {
-        return unknown_message_win32( ev, buffer, len );
+        using namespace boost::winapi;
+
+        wchar_t * lpMsgBuf = 0;
+
+        DWORD_ retval = boost::winapi::FormatMessageW(
+            FORMAT_MESSAGE_ALLOCATE_BUFFER_ | FORMAT_MESSAGE_FROM_SYSTEM_ | FORMAT_MESSAGE_IGNORE_INSERTS_,
+            NULL,
+            ev,
+            MAKELANGID_( LANG_NEUTRAL_, SUBLANG_DEFAULT_ ), // Default language
+            (LPWSTR_) &lpMsgBuf,
+            0,
+            NULL
+        );
+
+        if( retval != 0 )
+        {
+            r = boost::winapi::WideCharToMultiByte( code_page, 0, lpMsgBuf, -1, buffer, static_cast<int>( len ), NULL, NULL );
+            boost::winapi::LocalFree( lpMsgBuf );
+            if ( r != 0 ) --r; // exclude null terminator
+        }
     }
 
-    UINT_ const code_page = message_cp_win32();
-
-    int r = boost::winapi::WideCharToMultiByte( code_page, 0, wbuffer, -1, buffer, static_cast<int>( len ), NULL, NULL );
-
     if( r == 0 )
     {
         return unknown_message_win32( ev, buffer, len );
     }
 
-    --r; // exclude null terminator
-
     while( r > 0 && ( buffer[ r-1 ] == '\n' || buffer[ r-1 ] == '\r' ) )
     {
         buffer[ --r ] = 0;

include/boost/system/error_code.hpp

@@ -155,6 +155,10 @@ template<> struct is_error_condition_enum<errc::errc_t>
 };
 
 // class error_category
+#if ( defined( BOOST_GCC ) && BOOST_GCC >= 40600 ) || defined( BOOST_CLANG )
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+#endif
 
 #ifdef BOOST_MSVC
 #pragma warning( push )
@@ -314,6 +318,10 @@ public:
 
 } // namespace detail
 
+#if ( defined( BOOST_GCC ) && BOOST_GCC >= 40600 ) || defined( BOOST_CLANG )
+#pragma GCC diagnostic pop
+#endif
+
 // generic_category(), system_category()
 
 #if defined(BOOST_SYSTEM_HAS_CONSTEXPR)
@@ -499,7 +507,7 @@ public:
 
     BOOST_SYSTEM_CONSTEXPR explicit operator bool() const BOOST_NOEXCEPT  // true if error
     {
-        return failed_;
+        return val_ != 0;
     }
 
 #else
@@ -509,12 +517,12 @@ public:
 
     BOOST_SYSTEM_CONSTEXPR operator unspecified_bool_type() const BOOST_NOEXCEPT  // true if error
     {
-        return failed_? unspecified_bool_true: 0;
+        return val_ != 0? unspecified_bool_true: 0;
     }
 
     BOOST_SYSTEM_CONSTEXPR bool operator!() const BOOST_NOEXCEPT  // true if no error
     {
-        return !failed_;
+        return val_ == 0;
     }
 
 #endif
@@ -640,7 +648,7 @@ public:
 
     BOOST_SYSTEM_CONSTEXPR explicit operator bool() const BOOST_NOEXCEPT  // true if error
     {
-        return failed_;
+        return val_ != 0;
     }
 
 #else
@@ -650,12 +658,12 @@ public:
 
     BOOST_SYSTEM_CONSTEXPR operator unspecified_bool_type() const  BOOST_NOEXCEPT // true if error
     {
-        return failed_? unspecified_bool_true: 0;
+        return val_ != 0? unspecified_bool_true: 0;
     }
 
     BOOST_SYSTEM_CONSTEXPR bool operator!() const BOOST_NOEXCEPT // true if no error
     {
-        return !failed_;
+        return val_ == 0;
     }
 
 #endif

test/Jamfile.v2

@@ -1,7 +1,7 @@
 # Boost System Library test Jamfile
 
 # Copyright Beman Dawes 2003, 2006
-# Copyright 2017, 2018 Peter Dimov
+# Copyright 2017-2019 Peter Dimov
 
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt
@@ -9,109 +9,37 @@
 # See library home page at http://www.boost.org/libs/system
 
 import testing ;
-import os ;
 
-project
-    : requirements
-      <library>/boost/system//boost_system
-    ;
+lib throw_test : throw_test.cpp : <link>shared:<define>THROW_DYN_LINK=1 ;
 
-   lib throw_test : throw_test.cpp : <link>shared:<define>THROW_DYN_LINK=1 ;
+lib single_instance_lib1 : single_instance_1.cpp : <link>shared:<define>SINGLE_INSTANCE_DYN_LINK ;
+lib single_instance_lib2 : single_instance_2.cpp : <link>shared:<define>SINGLE_INSTANCE_DYN_LINK ;
 
-   lib single_instance_lib1 : single_instance_1.cpp : <link>shared:<define>SINGLE_INSTANCE_DYN_LINK ;
-   lib single_instance_lib2 : single_instance_2.cpp : <link>shared:<define>SINGLE_INSTANCE_DYN_LINK ;
-
-   rule cxx03 ( properties * )
-   {
-      local result ;
-
-      if <toolset>gcc in $(properties)
-      {
-         result = <cxxflags>-std=c++98 ; # 4.4 has no 03
-      }
-      else if <toolset>clang in $(properties)
-      {
-         result = <cxxflags>-std=c++03 ;
-      }
-      else
-      {
-         result = <build>no ;
-      }
-
-      return $(result) ;
-   }
-
-   rule cxx11 ( properties * )
-   {
-      local result ;
-
-      if <toolset>gcc in $(properties)
-      {
-         result = <cxxflags>-std=c++0x ; # 4.6 has no 11
-      }
-      else if <toolset>clang in $(properties)
-      {
-         result = <cxxflags>-std=c++11 ;
-      }
-      else
-      {
-         result = <build>no ;
-      }
-
-      return $(result) ;
-   }
-
-   rule system-run- ( sources + )
-   {
-      local result ;
-
-      result += [ run $(sources) : : : <link>static : $(sources[1]:B)_static ] ;
-      result += [ run $(sources) : : : <link>shared : $(sources[1]:B)_shared ] ;
-      result += [ run $(sources) : : : -<library>/boost/system//boost_system <define>BOOST_ERROR_CODE_HEADER_ONLY : $(sources[1]:B)_header ] ;
-
-      return $(result) ;
-   }
-
-if [ os.environ UBSAN ]
+rule system-run ( sources + )
 {
-   rule system-run ( sources + )
-   {
-      # The 03/11 tests are ODR violations, no point running them under -fsanitize=undefined
-      return [ system-run- $(sources) ] ;
-   }
-}
-else
-{
-   rule system-run ( sources + )
-   {
-      local result = [ system-run- $(sources) ] ;
+    local result ;
 
-      # Test a source file built with -std=c++03 linked with a System library built without -std=c++03
-      result += [ run $(sources) : : : <link>static <conditional>@cxx03 : $(sources[1]:B)_static_03 ] ;
-      result += [ run $(sources) : : : <link>shared <conditional>@cxx03 : $(sources[1]:B)_shared_03 ] ;
+    result += [ run $(sources) ] ;
+    result += [ run $(sources) : : : <library>/boost/system//boost_system <link>static : $(sources[1]:B)_static ] ;
+    result += [ run $(sources) : : : <library>/boost/system//boost_system <link>shared : $(sources[1]:B)_shared ] ;
+    result += [ run $(sources) : : : <define>BOOST_NO_ANSI_APIS : $(sources[1]:B)_no_ansi ] ;
+    result += [ run $(sources) : : : <define>BOOST_SYSTEM_USE_UTF8 : $(sources[1]:B)_utf8 ] ;
 
-      # Test a source file built with -std=c++11 linked with a System library built without -std=c++11
-      result += [ run $(sources) : : : <link>static <conditional>@cxx11 : $(sources[1]:B)_static_11 ] ;
-      result += [ run $(sources) : : : <link>shared <conditional>@cxx11 : $(sources[1]:B)_shared_11 ] ;
-
-      return $(result) ;
-   }
+    return $(result) ;
 }
 
 system-run error_code_test.cpp ;
 system-run error_code_user_test.cpp ;
 system-run system_error_test.cpp ;
 
-run dynamic_link_test.cpp throw_test :  :  : <link>shared : throw_test_shared ;
+run dynamic_link_test.cpp throw_test : : : <link>shared : throw_test_shared ;
 
 system-run initialization_test.cpp ;
-
-run header_only_test.cpp : : : -<library>/boost/system//boost_system ;
-run header_only_test.cpp : : : -<library>/boost/system//boost_system <define>BOOST_NO_ANSI_APIS : header_only_test_no_ansi ;
+system-run header_only_test.cpp ;
 
 run config_test.cpp : : : <test-info>always_show_run_output ;
 
-system-run- std_interop_test.cpp ;
+system-run std_interop_test.cpp ;
 system-run std_mismatch_test.cpp ;
 
 system-run single_instance_test.cpp single_instance_1.cpp single_instance_2.cpp ;
@@ -120,7 +48,7 @@ run single_instance_test.cpp single_instance_lib1 single_instance_lib2 : : : <li
 
 system-run before_main_test.cpp ;
 run-fail throws_assign_fail.cpp ;
-system-run- constexpr_test.cpp ;
+system-run constexpr_test.cpp ;
 system-run win32_hresult_test.cpp ;
 
 system-run error_category_test.cpp ;
@@ -128,9 +56,9 @@ system-run generic_category_test.cpp ;
 system-run system_category_test.cpp ;
 system-run after_main_test.cpp ;
 system-run failed_test.cpp ;
-system-run- failed_constexpr_test.cpp ;
+system-run failed_constexpr_test.cpp ;
 
 # Quick (CI) test
 run quick.cpp ;
 
-run quick.cpp : : : <warnings>all <warnings-as-errors>on : warnings_test ;
+run warnings_test.cpp : : : <warnings>all <warnings-as-errors>on <toolset>gcc:<cxxflags>-Wnon-virtual-dtor <toolset>clang:<cxxflags>-Wnon-virtual-dtor ;

test/error_code_test.cpp

@@ -197,7 +197,8 @@ int main( int, char ** )
 #if defined(BOOST_WINDOWS_API)
   // Borland appends newline, so just check text
   BOOST_TEST( ec.message().substr(0,13) == "Unknown error" );
-  BOOST_TEST( ec_0_system.message().substr(0,36) == "The operation completed successfully" );
+  // Fails when the language isn't US English
+  // BOOST_TEST( ec_0_system.message().substr(0,36) == "The operation completed successfully" );
 #elif  defined(linux) || defined(__linux) || defined(__linux__)
   // Linux appends value to message as unsigned, so it varies with # of bits
   BOOST_TEST( ec.message().substr(0,13) == "Unknown error" );

test/failed_test.cpp

@@ -123,13 +123,13 @@ template<class Ec> void test()
 
     {
         Ec ec( 0, http_category() );
-        TEST_FAILED( ec );
+        BOOST_TEST( ec.failed() );
 
         ec.assign( 200, http_category() );
-        TEST_NOT_FAILED( ec );
+        BOOST_TEST( !ec.failed() );
 
         ec = Ec( 404, http_category() );
-        TEST_FAILED( ec );
+        BOOST_TEST( ec.failed() );
     }
 
 }

test/system_category_test.cpp

@@ -18,6 +18,16 @@
 
 //
 
+#if defined(BOOST_WINDOWS_API) && defined(BOOST_SYSTEM_USE_UTF8)
+
+#include <boost/config/pragma_message.hpp>
+
+BOOST_PRAGMA_MESSAGE( "Skipping test due to BOOST_WINDOWS_API && BOOST_SYSTEM_USE_UTF8" )
+
+int main() {}
+
+#else
+
 #if defined(BOOST_WINDOWS_API)
 
 #include <windows.h>
@@ -90,7 +100,7 @@ static void test_message( sys::error_category const & cat, int ev )
 {
     BOOST_TEST_EQ( cat.message( ev ), sys_strerror( ev ) );
 
-    char buffer[ 2048 ]; // yes, really
+    char buffer[ 4096 ]; // yes, really
     BOOST_TEST_CSTR_EQ( cat.message( ev, buffer, sizeof( buffer ) ), sys_strerror( ev ).c_str() );
 }
 
@@ -100,17 +110,12 @@ int main()
 
     // message
 
-    for( int i = -2; i < 1024; ++i )
-    {
-        test_message( cat, i );
-    }
-
-    test_message( cat, 5810 );
-
-    for( int i = 10000; i < 11032; ++i )
+    for( int i = -2; i < 16000; ++i )
     {
         test_message( cat, i );
     }
 
     return boost::report_errors();
 }
+
+#endif // #if defined(BOOST_WINDOWS_API) && defined(BOOST_SYSTEM_USE_UTF8)

test/system_error_test.cpp

@@ -37,7 +37,7 @@ namespace
     BOOST_TEST( ex.code().category() == system_category() );
 # ifdef BOOST_WINDOWS_API
     LANGID language_id;
-#   if !defined(__MINGW32__) && !defined(__CYGWIN__) && !BOOST_PLAT_WINDOWS_RUNTIME
+#   if !BOOST_PLAT_WINDOWS_RUNTIME
       language_id = ::GetUserDefaultUILanguage();
 #   else
       language_id = 0x0409; // Assume US English

test/warnings_test.cpp

@@ -0,0 +1,42 @@
+
+// Copyright 2017, 2019 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+// See library home page at http://www.boost.org/libs/system
+
+#include <boost/config.hpp>
+
+#if defined( BOOST_GCC ) && BOOST_GCC < 40600
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+#endif
+
+#include <boost/system/error_code.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <cerrno>
+
+int main()
+{
+    boost::system::error_category const & bt = boost::system::generic_category();
+
+    int ev = ENOENT;
+
+    boost::system::error_code bc( ev, bt );
+
+    BOOST_TEST_EQ( bc.value(), ev );
+    BOOST_TEST_EQ( &bc.category(), &bt );
+
+    boost::system::error_condition bn = bt.default_error_condition( ev );
+
+    BOOST_TEST_EQ( bn.value(), ev );
+    BOOST_TEST_EQ( &bn.category(), &bt );
+
+    BOOST_TEST( bt.equivalent( ev, bn ) );
+
+    BOOST_TEST( bc == bn );
+
+    return boost::report_errors();
+}