Hi, ipe fails to build in a test rebuild on at least amd64 and arm64 with gcc-16/g++-16, but builds properly with gcc-15/g++-15. The severity of this report will be raised before the forky release. The full build log can be found at: https://people.debian.org/~ema/gcc-16-rebuilds/output-1/ipe_arm64.build.xz The last lines of the build log are at the end of this report. To build with GCC 16, either set CC=gcc-16 CXX=g++-16 explicitly, or install the gcc, g++, gfortran, ... packages from experimental. apt-get -t=experimental install g++ Common build failures include unused (but set) variables, array subscripts partly outside array bounds, and new/dropped symbols in Debian symbols files. For other C/C++ related build failures see the porting guide at http://gcc.gnu.org/gcc-16/porting_to.html Please only close this issue after double-checking that the package can be built correctly with GCC 16. Please do not reassign this bug to another package. If a fix in another package is required, then file a bug for the other package (or clone), and mark this bug as blocked by the bug in the other package. [...] ipepdfwriter.cpp: In member function ‘void ipe::PdfWriter::createPages()’: ipepdfwriter.cpp:893:10: error: ‘iSaveFlags’ was not declared in this scope 893 | if ((iSaveFlags & SaveFlag::MarkedView) && !iDoc->page(page)->marked()) | ^~~~~~~~~~ ipepdfwriter.cpp:896:9: error: ‘iSaveFlags’ was not declared in this scope 896 | if (iSaveFlags & SaveFlag::MarkedView) { | ^~~~~~~~~~ make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipeiml.o] Error 1 ipepdfwriter.cpp: In member function ‘void ipe::PdfWriter::createBookmarks()’: ipepdfwriter.cpp:982:10: error: ‘iSaveFlags’ was not declared in this scope 982 | if ((iSaveFlags & SaveFlag::MarkedView) && !iDoc->page(pg)->marked()) | ^~~~~~~~~~ make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipereference.o] Error 1 ipepdfwriter.cpp: In member function ‘void ipe::PdfWriter::createNamedDests()’: ipepdfwriter.cpp:1053:10: error: ‘iSaveFlags’ was not declared in this scope 1053 | if ((iSaveFlags & SaveFlag::MarkedView) && !iDoc->page(pg)->marked()) | ^~~~~~~~~~ ipepdfwriter.cpp: In member function ‘void ipe::PdfWriter::createTrailer()’: ipepdfwriter.cpp:1118:13: error: ‘iSaveFlags’ was not declared in this scope 1118 | if (!(iSaveFlags & SaveFlag::MarkedView) || iDoc->page(page)->marked()) { | ^~~~~~~~~~ make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipesnap.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipebitmap.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/iperesources.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipeutils.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipepage.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipepdfparser.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipelatex.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipedoc.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipestyle.o] Error 1 make[3]: *** [../common.mak:259: ../../build/obj/ipelib/ipepdfwriter.o] Error 1 make[3]: Leaving directory '/build/reproducible-path/ipe-7.2.30/src/ipelib' make[2]: *** [Makefile:59: ipelib] Error 2 make[2]: *** Waiting for unfinished jobs.... In file included from /usr/include/aarch64-linux-gnu/qt6/QtGui/qvalidator.h:12, from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/qabstractspinbox.h:9, from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/qstyleoption.h:11, from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/qabstractitemdelegate.h:9, from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/qcombobox.h:9, from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/QComboBox:1, from ipeui_qt.cpp:37: /usr/include/aarch64-linux-gnu/qt6/QtCore/qregularexpression.h:30:21: warning: defining ‘QRegularExpression’, which previously failed to be complete in a SFINAE context [-Wsfinae-incomplete=] 30 | class Q_CORE_EXPORT QRegularExpression | ^~~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/16/vector:70, from ipeui_common.h:42, from ipeui_qt.h:35, from ipeui_qt.cpp:31: /usr/include/c++/16/bits/range_access.h:325:24: note: here. Use ‘-Wsfinae-incomplete=2’ for a diagnostic at that point 325 | -> decltype(__cont.data()) | ~~~~~~~^~~~ ipeui_qt.cpp: In member function ‘virtual bool PDialog::buildAndRun(int, int)’: ipeui_qt.cpp:337:37: warning: ‘void QCheckBox::stateChanged(int)’ is deprecated: Use checkStateChanged() instead [-Wdeprecated-declarations] 337 | connect(ch, &QCheckBox::stateChanged, [&,method=m.lua_method](int){ callLua(method); }); | ^~~~~~~~~~~~ In file included from /usr/include/aarch64-linux-gnu/qt6/QtWidgets/QCheckBox:1, from ipeui_qt.cpp:34: /usr/include/aarch64-linux-gnu/qt6/QtWidgets/qcheckbox.h:41:10: note: declared here 41 | void stateChanged(int); | ^~~~~~~~~~~~ mkdir -p ../../build/lib g++ -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libipeui.so.7.2.30 -o ../../build/lib/libipeui.so.7.2.30 ../../build/obj/ipeui/ipeui_common.o ../../build/obj/ipeui/ipeui_qt.o ../../build/obj/ipeui/moc_ipeui_qt.o -lQt6Widgets -lQt6Gui -lQt6Core -llua5.4 ln -sf libipeui.so.7.2.30 ../../build/lib/libipeui.so rm moc_ipeui_qt.cpp make[3]: Leaving directory '/build/reproducible-path/ipe-7.2.30/src/ipeui' make[2]: Leaving directory '/build/reproducible-path/ipe-7.2.30/src' dh_auto_build: error: cd src && make -j128 INSTALL="install --strip-program=true" returned exit code 2 make[1]: *** [debian/rules:14: build-arch] Error 25 make[1]: Leaving directory '/build/reproducible-path/ipe-7.2.30' make: *** [debian/rules:14: binary] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2