Error with QNetworkSession::interface()

[ODБOï]

Hi,
i had this code running with Qt5.11

 QNetworkSession session ( conf );
 QNetworkInterface intr = session.interface();

now, with Qt5.12 this will note compile.

i have this :

main.cpp:44: erreur : expected unqualified-id before 'struct'
     QNetworkInterface intr = session.interface();
        
main.cpp:44: erreur : expected unqualified-id                              ^

Parse issue  : rpc.h:12:19:note: expanded from macro 'interface'

What is the probleme please ?

[jsulm]

@LeLev Do you have a macro in rpc.h called "interface"?

[ODБOï]

@jsulm how to find rpc.h ? this is not part of my project, it is Microsoft Remote Procedure Call.

[jsulm]

@LeLev Can you post the whole build log?

[Ratzz]

@LeLev said in Error with QNetworkSession::interface():

how to find rpc.h ?

For me its present in C:\Qt\Qt5.9.3\Tools\mingw530_32\i686-w64-mingw32\include and 12 th line says #define interface struct

[ODБOï]

@jsulm

C:/Qt/Tools/mingw730_64/bin/mingw32-make -f Makefile.Release
mingw32-make[1]: Entering directory 'C:/Users/lev/Documents/build-udp_inspector-Desktop_Qt_5_12_0_MinGW_64_bit-Release'
g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -Wall -W -Wextra -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DQT_DEPRECATED_WARNINGS -DQT_NO_DEBUG -DQT_QUICK_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_NEEDS_QMAIN -I..\CN16K_Spyer -I. -I..\LIB\SSH_Lib\SSH_files -I..\CN16K_SFTP -I..\..\..\..\Qt\5.12.0\mingw73_64\include -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtQuick -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtWidgets -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtGui -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtANGLE -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtQml -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtNetwork -I..\..\..\..\Qt\5.12.0\mingw73_64\include\QtCore -Irelease -I\include -I..\..\..\..\Qt\5.12.0\mingw73_64\mkspecs\win32-g++  -o release\main.o ..\CN16K_Spyer\main.cpp
In file included from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/oleidl.h:7:0,
                 from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/ole2.h:38,
                 from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/wtypes.h:12,
                 from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/winscard.h:10,
                 from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/windows.h:97,
                 from C:/Qt/Tools/mingw730_64/x86_64-w64-mingw32/include/winsock2.h:23,
                 from ..\LIB\SSH_Lib\SSH_files/libssh.h:64,
                 from ..\LIB\SSH_Lib\SSH_files/sftp.h:42,
                 from ..\CN16K_SFTP/cn16k_sftp.h:7,
                 from ..\CN16K_Spyer\fileloader.h:7,
                 from ..\CN16K_Spyer\main.cpp:11:
..\CN16K_Spyer\main.cpp: In function 'int qMain(int, char**)':
..\CN16K_Spyer\main.cpp:33:38: error: expected unqualified-id before 'struct'
     QNetworkInterface intr = session.interface();
                                      ^
mingw32-make[1]: *** [Makefile.Release:767: release/main.o] Error 1
mingw32-make[1]: Leaving directory 'C:/Users/lev/Documents/build-udp_inspector-Desktop_Qt_5_12_0_MinGW_64_bit-Release'
mingw32-make: *** [Makefile:36: release] Error 2
11:33:31: Le processus "C:\Qt\Tools\mingw730_64\bin\mingw32-make.exe" s'est terminé avec le code 2.
Erreur lors de la compilation/déploiement du projet udp_inspector (kit : Desktop Qt 5.12.0 MinGW 64-bit)
When executing step "Make"

[jsulm]

@LeLev said in Error with QNetworkSession::interface():

QNetworkInterface intr = session.interface();

Is it a typo? Should be int not intr.

[ODБOï]

@jsulm i named it 'intr' for 'interface'

[jsulm]

@LeLev Forget my comment, somehow I managed to read this line in a wrong way :-)

[Ratzz]

@LeLev
Error with QNetworkSession::interface():

Do you have a macro in rpc.h called "interface"?

Can you check this ?

[ODБOï]

@Ratzz yes, there is

#include <_mingw.h>

#ifndef __OBJC__
#undef interface
#define interface struct
#endif

in my C:\Qt\Tools\mingw730_64\x86_64-w64-mingw32\include

[ODБOï]

This solved the probleme

    QNetworkSession session ( conf );
    #undef interface
    QNetworkInterface intr = session.interface();

Thank you @jsulm and @Ratzz

[jsulm]

@LeLev This is strange. You're not building for MacOS.

__OBJC__

is defined when building for MacOS, see https://stackoverflow.com/questions/2054669/objc-in-objective-c

[ODБOï]

@jsulm yes i'm building for windows.

[jsulm]

@LeLev Do you have anything related to MacOS in your pro file?

[ODБOï]

@jsulm no, nothing