build fails with gcc 11 and -Werror=nonnull
[ 18%] Building CXX object src/CMakeFiles/inkscape_base.dir/extension/system.cpp.o
cd /home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/x86_64-redhat-linux-gnu/src && /usr/bin/g++ -DHAVE_CONFIG_H -DWITH_CSSBLEND -DWITH_CSSCOMPOSITE -DWITH_MESH -DWITH_SVG2 -Dinkscape_base_EXPORTS -I/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/x86_64-redhat-linux-gnu/src -I/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src -I/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2 -I/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/x86_64-redhat-linux-gnu/include -I/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/3rdparty/adaptagrams -isystem /usr/include/harfbuzz -isystem /usr/include/pango-1.0 -isystem /usr/include/glib-2.0 -isystem /usr/lib64/glib-2.0/include -isystem /usr/include/cairo -isystem /usr/include/freetype2 -isystem /usr/include/libsoup-2.4 -isystem /usr/include/gc -isystem /usr/include/poppler -isystem /usr/include/libwpg-0.3 -isystem /usr/include/librevenge-0.0 -isystem /usr/include/libvisio-0.1 -isystem /usr/include/libcdr-0.1 -isystem /usr/include/gtkmm-3.0 -isystem /usr/lib64/gtkmm-3.0/include -isystem /usr/include/giomm-2.4 -isystem /usr/lib64/giomm-2.4/include -isystem /usr/include/glibmm-2.4 -isystem /usr/lib64/glibmm-2.4/include -isystem /usr/include/sigc++-2.0 -isystem /usr/lib64/sigc++-2.0/include -isystem /usr/include/gtk-3.0 -isystem /usr/include/gdk-pixbuf-2.0 -isystem /usr/include/atk-1.0 -isystem /usr/include/cairomm-1.0 -isystem /usr/lib64/cairomm-1.0/include -isystem /usr/include/pangomm-1.4 -isystem /usr/lib64/pangomm-1.4/include -isystem /usr/include/atkmm-1.6 -isystem /usr/lib64/atkmm-1.6/include -isystem /usr/include/gtk-3.0/unix-print -isystem /usr/include/gdkmm-3.0 -isystem /usr/lib64/gdkmm-3.0/include -isystem /usr/include/libgdl-3.0 -isystem /usr/include/libxml2 -isystem /usr/include/gtkspell-3.0 -isystem /usr/include/enchant-2 -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -flto=auto -flto-partition=none -fdata-sections -ffunction-sections -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong -Werror=format -Werror=format-security -fopenmp -O2 -g -DNDEBUG -fPIC -pthread -fPIC -std=gnu++11 -o CMakeFiles/inkscape_base.dir/extension/system.cpp.o -c /home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp: In function ‘void Inkscape::Extension::open_internal(Inkscape::Extension::Extension*, gpointer)’:
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp:177:78: error: ‘this’ pointer null [-Werror=nonnull]
177 | gchar const *ext = dynamic_cast<Input *>(in_plug)->get_extension();
| ^
In file included from /home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp:26:
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/input.h:54:19: note: in a call to non-static member function ‘gchar* Inkscape::Extension::Input::get_extension()’
54 | gchar * get_extension ();
| ^~~~~~~~~~~~~
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp: In function ‘void Inkscape::Extension::save_internal(Inkscape::Extension::Extension*, gpointer)’:
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp:387:79: error: ‘this’ pointer null [-Werror=nonnull]
387 | gchar const *ext = dynamic_cast<Output *>(in_plug)->get_extension();
| ^
In file included from /home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/system.cpp:27:
/home/tkloczko/rpmbuild/BUILD/inkscape-INKSCAPE_1_0_2/src/extension/output.h:51:18: note: in a call to non-static member function ‘gchar* Inkscape::Extension::Output::get_extension()’
51 | gchar * get_extension();
| ^~~~~~~~~~~~~
cc1plus: some warnings being treated as errors
Inkscape versions:
-
1.0.2
(original report by @kloczek) -
1.1-alpha (a3582cbcff, 2021-02-01, custom)
(tested by @speleo3 on Arch Linux)
GCC version:
-
gcc (GCC) 11.0.0 20210203 (experimental)
from git master on Arch Linux (@speleo3)
Edited by Thomas Holder