I am using Fedora Linux 43 (Workstation Edition).
I see there is a fix for unused variable error but I am getting one right now.
Installed all dependencies from dnf and compiled framework today on my machine, but it keeps creating files with unused variable and deprecated function. I am using postgresql database and this is sql file for table creation:
DROP TABLE IF EXISTS users;
CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
surname VARCHAR(100) NOT NULL,
date_of_birth DATE NOT NULL,
phone VARCHAR(20) NOT NULL
);This is the compilation command:
c++ -c -Wall -Werror -Wextra -std=c++20 -MMD -MP -I/usr/include/jsoncpp/ -Isrc/controllers/ -Isrc/entities/ -Isrc/ -Imodels models/Users.cc -o build/obj/models/Users.o
models/Users.cc: In member function ‘void drogon_model::cpp::Users::updateId(uint64_t)’:
models/Users.cc:420:37: error: unused parameter ‘id’ [-Werror=unused-parameter]
420 | void Users::updateId(const uint64_t id)
| ~~~~~~~~~~~~~~~^~
models/Users.cc: In static member function ‘static bool drogon_model::cpp::Users::validJsonOfField(size_t, const std::string&, const Json::Value&, std::string&, bool)’:
models/Users.cc:955:41: error: ‘template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc> class std::__cxx11::wstring_convert’ is deprecated [-Werror=deprecated-declaration
s]
955 | if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
| ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/15/locale:47,
from /usr/include/c++/15/iomanip:53,
from /usr/include/c++/15/bits/chrono_io.h:40,
from /usr/include/c++/15/chrono:3378,
from /usr/local/include/trantor/net/EventLoop.h:29,
from /usr/local/include/drogon/utils/coroutine.h:17,
from /usr/local/include/drogon/orm/DbClient.h:33,
from /usr/local/include/drogon/orm/BaseBuilder.h:18,
from /usr/local/include/drogon/orm/Mapper.h:17,
from models/Users.h:13,
from models/Users.cc:8:
/usr/include/c++/15/bits/locale_conv.h:262:33: note: declared here
262 | class _GLIBCXX17_DEPRECATED wstring_convert
| ^~~~~~~~~~~~~~~
models/Users.cc:975:41: error: ‘template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc> class std::__cxx11::wstring_convert’ is deprecated [-Werror=deprecated-declaration
s]
975 | if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
| ^~~~~~~~~~~~~~~
/usr/include/c++/15/bits/locale_conv.h:262:33: note: declared here
262 | class _GLIBCXX17_DEPRECATED wstring_convert
| ^~~~~~~~~~~~~~~
models/Users.cc:1007:41: error: ‘template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc> class std::__cxx11::wstring_convert’ is deprecated [-Werror=deprecated-declaratio
ns]
1007 | if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
| ^~~~~~~~~~~~~~~
/usr/include/c++/15/bits/locale_conv.h:262:33: note: declared here
262 | class _GLIBCXX17_DEPRECATED wstring_convert
| ^~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make: *** [Makefile:55: build/obj/models/Users.o] Error 1
(6 of 29): error: unused parameter ‘id’ [-Werror=unused-parameter]This is the deprecated errors function:
bool Users::validJsonOfField(size_t index,
const std::string &fieldName,
const Json::Value &pJson,
std::string &err,
bool isForCreation)
{
switch(index)
{
case 0:
if(pJson.isNull())
{
err="The " + fieldName + " column cannot be null";
return false;
}
if(isForCreation)
{
err="The automatic primary key cannot be set";
return false;
}
if(!pJson.isInt())
{
err="Type error in the "+fieldName+" field";
return false;
}
break;
case 1:
if(pJson.isNull())
{
err="The " + fieldName + " column cannot be null";
return false;
}
if(!pJson.isString())
{
err="Type error in the "+fieldName+" field";
return false;
}
if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
.from_bytes(pJson.asCString()).size() > 100)
{
err="String length exceeds limit for the " +
fieldName +
" field (the maximum value is 100)";
return false;
}
break;
case 2:
if(pJson.isNull())
{
err="The " + fieldName + " column cannot be null";
return false;
}
if(!pJson.isString())
{
err="Type error in the "+fieldName+" field";
return false;
}
if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
.from_bytes(pJson.asCString()).size() > 100)
{
err="String length exceeds limit for the " +
fieldName +
" field (the maximum value is 100)";
return false;
}
break;
case 3:
if(pJson.isNull())
{
err="The " + fieldName + " column cannot be null";
return false;
}
if(!pJson.isString())
{
err="Type error in the "+fieldName+" field";
return false;
}
break;
case 4:
if(pJson.isNull())
{
err="The " + fieldName + " column cannot be null";
return false;
}
if(!pJson.isString())
{
err="Type error in the "+fieldName+" field";
return false;
}
if(pJson.isString() && std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>{}
.from_bytes(pJson.asCString()).size() > 20)
{
err="String length exceeds limit for the " +
fieldName +
" field (the maximum value is 20)";
return false;
}
break;
default:
err="Internal error in the server";
return false;
}
return true;
}This is the unused variable errrors one:
void Users::updateId(const uint64_t id)
{
}
I am using Fedora Linux 43 (Workstation Edition).
I see there is a fix for unused variable error but I am getting one right now.
Installed all dependencies from dnf and compiled framework today on my machine, but it keeps creating files with unused variable and deprecated function. I am using postgresql database and this is sql file for table creation:
This is the compilation command:
c++ -c -Wall -Werror -Wextra -std=c++20 -MMD -MP -I/usr/include/jsoncpp/ -Isrc/controllers/ -Isrc/entities/ -Isrc/ -Imodels models/Users.cc -o build/obj/models/Users.oThis is the deprecated errors function:
This is the unused variable errrors one: