https://bugs.kde.org/show_bug.cgi?id=439780
Bug ID: 439780
Summary: kio does not compile with libc++ due to the use of the
(obsolete and removed) std::mem_fun
Product: frameworks-kio
Version: 5.84.0
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: kio-bugs-n...@kde.org
Reporter: sputn...@quassel-irc.org
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
Kio 5.84.0 does not compile with libc++, causing the following error:
---------------------------------
FAILED: src/widgets/CMakeFiles/KF5KIOWidgets.dir/kpropertiesdialog.cpp.o
/usr/lib/ccache/bin/clang++
-DKCOMPLETION_DISABLE_DEPRECATED_BEFORE_AND_AT=0x054100 -DKCOREADDONS_LIB
-DKF5KIOWidgets_EXPORTS -DKF_DEPRECATED_WARNINGS_SINCE=0x060000
-DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x055100 -DKGUIADDONS_LIB
-DKIOCORE_DEPRECATED_
WARNINGS_SINCE=0x0 -DKIOCORE_DISABLE_DEPRECATED_BEFORE_AND_AT=0x0
-DKIOWIDGETS_DEPRECATED_WARNINGS_SINCE=0x0
-DKIOWIDGETS_DISABLE_DEPRECATED_BEFORE_AND_AT=0x0 -DQT_CONCURRENT_LIB
-DQT_CORE_LIB -DQT_DBUS_LIB -DQT_DEPRECATED_WARNINGS_SINCE=0x060000
-DQT_DISABLE_DEPRECATED_BEFORE=0x050f00 -DQT_GUI_LIB -DQT_NETWORK_LIB
-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_FROM_BYTEARRAY -DQT_NO_CAST_TO_ASCII
-DQT_NO_DEBUG -DQT_NO_FOREACH -DQT_NO_KEYWORDS
-DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_URL_CAST_FROM_STRING
-DQT_STRICT_ITERATORS -DQT_USE_QSTRINGBUILDER -DQT_WIDGETS_LIB -DQT_XML_LIB
-DTRANSLATION_DOMAIN=\"kio5\" -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -Isrc/widgets
-I/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/widgets
-Isrc/widgets/KF5KIOWidgets_autogen/include -Isrc/gui
-I/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/gui
-Isrc/core/..
-I/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/core/kssl
-Isrc/core
-I/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/core -isystem
/usr/include/KF5/KCoreAddons -isystem /usr/include/KF5 -isystem
/usr/include/qt5 -isystem /usr/include/qt5/QtCore -isystem
/usr/lib64/qt5/mkspecs/linux-clang -isystem /usr/include/KF5/KService -isystem
/usr/include/KF5/KConfigCore -isystem /usr/include/qt5/QtNetwork -isystem
/usr/include/qt5/QtDBus -isystem /usr/include/KF5/KWindowSystem -isystem
/usr/include/qt5/QtGui -isystem /usr/include/KF5/KJobWidgets -isystem
/usr/include/qt5/QtWidgets -isystem /usr/include/KF5/Solid -isystem
/usr/include/KF5/KCompletion -isystem /usr/include/KF5/KWidgetsAddons -isystem
/usr/include/qt5/QtConcurrent -isystem /usr/include/KF5/KI18n -isystem
/usr/include/KF5/KGuiAddons -isystem /usr/include/KF5/KIconThemes -isystem
/usr/include/KF5/KConfigWidgets -isystem /usr/include/KF5/KCodecs -isystem
/usr/include/KF5/KConfigGui -isystem /usr/include/qt5/QtXml -isystem
/usr/include/KF5/KAuth -DQT_NO_DEBUG -O3 -march=native -pipe
-fomit-frame-pointer -fno-operator-names -fno-exceptions
-Wno-gnu-zero-variadic-macro-arguments -Wall -Wextra -Wcast-align
-Wchar-subscripts -Wformat-security -Wno-long-long -Wpointer-arith -Wundef
-Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Wvla -Wdate-time
-fdiagnostics-color=always -pedantic -Wzero-as-null-pointer-constant -fPIC
-fvisibility=hidden -fvisibility-inlines-hidden -fPIC -std=c++17 -MD -MT
src/widgets/CMakeFiles/KF5KIOWidgets.dir/kpropertiesdialog.cpp.o -MF
src/widgets/CMakeFiles/KF5KIOWidgets.dir/kpropertiesdialog.cpp.o.d -o
src/widgets/CMakeFiles/KF5KIOWidgets.dir/kpropertiesdialog.cpp.o -c
/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/widgets/kpropertiesdialog.cpp
/var/tmp/portage/kde-frameworks/kio-5.84.0/work/kio-5.84.0/src/widgets/kpropertiesdialog.cpp:2275:74:
error: no member named 'mem_fun' in namespace 'std'; did you mean 'mem_fn'?
std::for_each(theNotSpecials.begin(), theNotSpecials.end(),
std::mem_fun(&QWidget::hide));
~~~~~^~~~~~~
mem_fn
/usr/include/c++/v1/functional:1410:1: note: 'mem_fn' declared here
mem_fn(_Rp _Tp::* __pm) _NOEXCEPT
^
1 error generated.
---------------------------------
std::mem_fun was deprecated in C++11 in favor of std::mem_fn and finally
removed in C++17, so while it still may be around in GCC/stdlibc++ even with
-std=c++17, it must no longer be used and cannot be expected to compile with
other toolchains.
This issue was newly introduced in 5.84.0, at least previous versions compiled
with no issues.
STEPS TO REPRODUCE
1. Compile with libc++ (Clang or GCC does not matter)
OBSERVED RESULT
Does not compile with libc++ due to use of std::mem_fun which was removed from
C++17
EXPECTED RESULT
Should compile with any standards-compliant toolchain
SOFTWARE/OS VERSIONS
KDE Frameworks Version: 5.84.0
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