Hi Tomasz,

  This looks like it is a bug with ld.bfd, rather than a bug in GPaste.

  Is there a small testcase that reproduces the problem ?  Or failing
  that, please can you walk me through how to build GPaste in order to
  reproduce the bug ?  (I have never built GPaste before).

Cheers
  Nick

Just -flto in CFLAGS and -flto -fuse-linker-plugin in LDFLAGS + standard set of NM, AR and RANLIB env variables with gcc-<prog>.

Hi Tomasz,

  I have tried building gpaste-3.30.2-2.fc30.src.rpm in a rawhide mock environment,
  but it fails because the build requirement for "pkgconfig(mutter-clutter-3)" cannot
  be resolved.  I have installed the mutter-devel package, but that provides
  pkconfig(mutter-clutter-4) instead.  As far as I can see there is no package for
  rawhide that provides pkgconfig(mutter-clutter-3).  Do you have any advice on what
  I can do ?

Cheers
  Nick

Created attachment 1534787 [details]
libmutter-4 patch

Just add attached patch and change BR to pkgconfig(libmutter-4).

I forgot to mention that my case is against libmutter-4 :P

Created attachment 1534887 [details]
Proposed patch

Hi Tomasz,

  Thanks - with that I was able to reproduce the problem ... and conclude 
  that it is actually a GPaste bug!  There is an errant symbol defined in
  the libgpaste.sym file which is no longer present in the sources.  This
  symbol definition is triggering an "Invalid GType function" error from
  the gobject-introspection tool, which then leads to the link failing.
  (I am not clear on how gobject-introspection is being invoked as part
  of the link, but this does appear to be happening).

  The attached patch should fix the problem.  Please could you try it out
  and let me know if it works ?

Cheers
  Nick

PS: As for why the link works with gold, my best guess is that gold is 
  not invoking the gobject-introspection tool.  (Or maybe the plugin
  being used by gold does not invoke it).  So the link succeeds, but it
  probably includes a bogus reference to the g_paste_settings_get_type
  function somewhere.

I think that I found similar case with gtk3.
There is no issue of course as long as LTO is  not used.


CPPFLAGS="" CFLAGS="-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -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" LDFLAGS="-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -flto -fuse-linker-plugin" CC="gcc" PKG_CONFIG="/usr/bin/x86_64-redhat-linux-gnu-pkg-config" GI_HOST_OS="" DLLTOOL="false" CC="gcc" /usr/bin/g-ir-scanner   --namespace=Gtk --nsversion=3.0 --libtool="/bin/sh ../libtool"  --include=Atk-1.0 --include=xlib-2.0 --pkg-export=gtk+-3.0 --c-include=gtk/gtk.h --c-include=gtk/gtk-a11y.h --c-include=gtk/gtkx.h  --library=libgtk-3.la --library=../gdk/libgdk-3.la --warn-all --add-include-path=../gdk --include-uninstalled=../gdk/Gdk-3.0.gir --add-include-path=../gdk/x11 --cflags-begin -DG_LOG_DOMAIN=\"Gtk\" -DG_LOG_USE_STRUCTURED=1 -DGTK_VERSION=\"3.24.5\" -DGTK_BINARY_VERSION=\"3.0.0\" -DGTK_COMPILATION -DGTK_PRINT_BACKEND_ENABLE_UNSUPPORTED -DGTK_LIBDIR=\"/usr/lib64\" -DGTK_LOCALEDIR=\"/usr/share/locale\" -DGTK_DATADIR=\"/usr/share\" -DGTK_DATA_PREFIX=\"/usr\" -DGTK_SYSCONFDIR=\"/etc\" -DGTK_HOST=\"x86_64-redhat-linux-gnu\" -DGTK_PRINT_BACKENDS=\"file,cups\" -DX11_DATA_PREFIX=\"/usr\" -DISO_CODES_PREFIX=\"/usr\" -I.. -I../gtk -I.. -I../gdk -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include  -DG_DISABLE_ASSERT -DG_DISABLE_CHECKS -DG_DISABLE_CAST_CHECKS -DGLIB_MIN_REQUIRED_VERSION=GLIB_VERSION_2_52 -DGLIB_MAX_ALLOWED_VERSION=GLIB_VERSION_2_54 -fvisibility=hidden -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/atk-1.0 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libmount -I/usr/include/at-spi2-atk/2.0 -I/usr/include/libdrm -I/usr/include/fribidi -I/usr/include/gio-unix-2.0 -pthread    -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/libpng16  -DINCLUDE_IM_wayland -DGTK_TEXT_USE_INTERNAL_UNSUPPORTED_API --cflags-end  gtk.h gtk-autocleanups.h gtkx-autocleanups.h gtk-a11y.h gtkaboutdialog.h gtkaccelgroup.h gtkaccellabel.h gtkaccelmap.h gtkaccessible.h gtkactionable.h gtkactionbar.h gtkadjustment.h gtkappchooser.h gtkappchooserbutton.h gtkappchooserdialog.h gtkappchooserwidget.h gtkapplication.h gtkapplicationwindow.h gtkaspectframe.h gtkassistant.h gtkbbox.h gtkbin.h gtkbindings.h gtkborder.h gtkbox.h gtkbuilder.h gtkbuildable.h gtkbutton.h gtkcalendar.h gtkcellarea.h gtkcellareacontext.h gtkcellareabox.h gtkcelleditable.h gtkcelllayout.h gtkcellrenderer.h gtkcellrendereraccel.h gtkcellrenderercombo.h gtkcellrendererpixbuf.h gtkcellrendererprogress.h gtkcellrendererspin.h gtkcellrendererspinner.h gtkcellrenderertext.h gtkcellrenderertoggle.h gtkcellview.h gtkcheckbutton.h gtkcheckmenuitem.h gtkclipboard.h gtkcolorbutton.h gtkcolorchooser.h gtkcolorchooserwidget.h gtkcolorchooserdialog.h gtkcolorutils.h gtkcombobox.h gtkcomboboxtext.h gtkcontainer.h gtkcssprovider.h gtkcsssection.h gtkdebug.h gtkdialog.h gtkdnd.h gtkdragdest.h gtkdragsource.h gtkdrawingarea.h gtkeditable.h gtkentry.h gtkentrybuffer.h gtkentrycompletion.h gtkenums.h gtkeventbox.h gtkeventcontroller.h gtkeventcontrollerkey.h gtkeventcontrollermotion.h gtkeventcontrollerscroll.h gtkexpander.h gtkfilechooser.h gtkfilechooserbutton.h gtkfilechooserdialog.h gtkfilechoosernative.h gtkfilechooserwidget.h gtkfilefilter.h gtkfixed.h gtkflowbox.h gtkfontbutton.h gtkfontchooser.h gtkfontchooserdialog.h gtkfontchooserwidget.h gtkframe.h gtkgesture.h gtkgesturedrag.h gtkgesturelongpress.h gtkgesturemultipress.h gtkgesturepan.h gtkgesturerotate.h gtkgesturesingle.h gtkgesturestylus.h gtkgestureswipe.h gtkgesturezoom.h gtkglarea.h gtkgrid.h gtkheaderbar.h gtkicontheme.h gtkiconview.h gtkimage.h gtkimcontext.h gtkimcontextinfo.h gtkimcontextsimple.h gtkimmodule.h gtkimmulticontext.h gtkinfobar.h gtkinvisible.h gtklabel.h gtklayout.h gtklevelbar.h gtklinkbutton.h gtklistbox.h gtkliststore.h gtklockbutton.h gtkmain.h gtkmenu.h gtkmenubar.h gtkmenubutton.h gtkmenuitem.h gtkmenushell.h gtkmenutoolbutton.h gtkmessagedialog.h gtkmodelbutton.h gtkmodules.h gtkmountoperation.h gtknativedialog.h gtknotebook.h gtkoffscreenwindow.h gtkorientable.h gtkoverlay.h gtkpadcontroller.h gtkpagesetup.h gtkpaned.h gtkpapersize.h gtkplacessidebar.h gtkplug.h gtkpopover.h gtkpopovermenu.h gtkprintcontext.h gtkprintoperation.h gtkprintoperationpreview.h gtkprintsettings.h gtkprogressbar.h gtkradiobutton.h gtkradiomenuitem.h gtkradiotoolbutton.h gtkrange.h gtkrecentchooser.h gtkrecentchooserdialog.h gtkrecentchoosermenu.h gtkrecentchooserwidget.h gtkrecentfilter.h gtkrecentmanager.h gtkrender.h gtkrevealer.h gtkscale.h gtkscalebutton.h gtkscrollable.h gtkscrollbar.h gtkscrolledwindow.h gtksearchbar.h gtksearchentry.h gtkselection.h gtkseparator.h gtkseparatormenuitem.h gtkseparatortoolitem.h gtksettings.h gtkshortcutlabel.h gtkshortcutsgroup.h gtkshortcutssection.h gtkshortcutsshortcut.h gtkshortcutswindow.h gtkshow.h gtkstacksidebar.h gtksizegroup.h gtksizerequest.h gtksocket.h gtkspinbutton.h gtkspinner.h gtkstack.h gtkstackswitcher.h gtkstatusbar.h gtkstylecontext.h gtkstyleprovider.h gtkswitch.h gtktestutils.h gtktextattributes.h gtktextbuffer.h gtktextbufferrichtext.h gtktextchild.h gtktextiter.h gtktextmark.h gtktexttag.h gtktexttagtable.h gtktextview.h gtktogglebutton.h gtktoggletoolbutton.h gtktoolbar.h gtktoolbutton.h gtktoolitem.h gtktoolitemgroup.h gtktoolpalette.h gtktoolshell.h gtktooltip.h gtktreednd.h gtktreemodel.h gtktreemodelfilter.h gtktreemodelsort.h gtktreeselection.h gtktreesortable.h gtktreestore.h gtktreeview.h gtktreeviewcolumn.h gtktypes.h gtkviewport.h gtkvolumebutton.h gtkwidget.h gtkwidgetpath.h gtkwindow.h gtkwindowgroup.h gtktypebuiltins.h gtkversion.h a11y/gtk-a11y-autocleanups.h a11y/gtkarrowaccessible.h a11y/gtkbooleancellaccessible.h a11y/gtkbuttonaccessible.h a11y/gtkcellaccessible.h a11y/gtkcellaccessibleparent.h a11y/gtkcheckmenuitemaccessible.h a11y/gtkcomboboxaccessible.h a11y/gtkcontaineraccessible.h a11y/gtkcontainercellaccessible.h a11y/gtkentryaccessible.h a11y/gtkexpanderaccessible.h a11y/gtkflowboxaccessible.h a11y/gtkflowboxchildaccessible.h a11y/gtkframeaccessible.h a11y/gtkiconviewaccessible.h a11y/gtkimageaccessible.h a11y/gtkimagecellaccessible.h a11y/gtklabelaccessible.h a11y/gtklevelbaraccessible.h a11y/gtklinkbuttonaccessible.h a11y/gtklistboxaccessible.h a11y/gtklistboxrowaccessible.h a11y/gtklockbuttonaccessible.h a11y/gtkmenuaccessible.h a11y/gtkmenubuttonaccessible.h a11y/gtkmenuitemaccessible.h a11y/gtkmenushellaccessible.h a11y/gtknotebookaccessible.h a11y/gtknotebookpageaccessible.h a11y/gtkpanedaccessible.h a11y/gtkpopoveraccessible.h a11y/gtkprogressbaraccessible.h a11y/gtkradiobuttonaccessible.h a11y/gtkradiomenuitemaccessible.h a11y/gtkrangeaccessible.h a11y/gtkrenderercellaccessible.h a11y/gtkscaleaccessible.h a11y/gtkscalebuttonaccessible.h a11y/gtkscrolledwindowaccessible.h a11y/gtkspinbuttonaccessible.h a11y/gtkspinneraccessible.h a11y/gtkstatusbaraccessible.h a11y/gtkstackaccessible.h a11y/gtkswitchaccessible.h a11y/gtktextcellaccessible.h a11y/gtktextviewaccessible.h a11y/gtktogglebuttonaccessible.h a11y/gtktoplevelaccessible.h a11y/gtktreeviewaccessible.h a11y/gtkwidgetaccessible.h a11y/gtkwindowaccessible.h deprecated/gtkactivatable.h deprecated/gtkaction.h deprecated/gtkactiongroup.h deprecated/gtkalignment.h deprecated/gtkarrow.h deprecated/gtkcolorsel.h deprecated/gtkcolorseldialog.h deprecated/gtkfontsel.h deprecated/gtkgradient.h deprecated/gtkhandlebox.h deprecated/gtkhbbox.h deprecated/gtkhbox.h deprecated/gtkhpaned.h deprecated/gtkhscale.h deprecated/gtkhscrollbar.h deprecated/gtkhseparator.h deprecated/gtkhsv.h deprecated/gtkiconfactory.h deprecated/gtkimagemenuitem.h deprecated/gtkmisc.h deprecated/gtknumerableicon.h deprecated/gtkradioaction.h deprecated/gtkrc.h deprecated/gtkrecentaction.h deprecated/gtkstatusicon.h deprecated/gtkstock.h deprecated/gtkstyle.h deprecated/gtkstyleproperties.h deprecated/gtksymboliccolor.h deprecated/gtktable.h deprecated/gtktearoffmenuitem.h deprecated/gtkthemingengine.h deprecated/gtktoggleaction.h deprecated/gtkuimanager.h deprecated/gtkvbbox.h deprecated/gtkvbox.h deprecated/gtkvscale.h deprecated/gtkvscrollbar.h deprecated/gtkvseparator.h deprecated/gtkvpaned.h a11y/gtkaccessibility.c a11y/gtkaccessibilitymisc.c a11y/gtkaccessibilityutil.c a11y/gtkarrowaccessible.c a11y/gtkbooleancellaccessible.c a11y/gtkbuttonaccessible.c a11y/gtkcellaccessible.c a11y/gtkcellaccessibleparent.c a11y/gtkcheckmenuitemaccessible.c a11y/gtkcolorswatchaccessible.c a11y/gtkcomboboxaccessible.c a11y/gtkcontaineraccessible.c a11y/gtkcontainercellaccessible.c a11y/gtkentryaccessible.c a11y/gtkexpanderaccessible.c a11y/gtkflowboxaccessible.c a11y/gtkflowboxchildaccessible.c a11y/gtkframeaccessible.c a11y/gtkiconviewaccessible.c a11y/gtkimageaccessible.c a11y/gtkimagecellaccessible.c a11y/gtklabelaccessible.c a11y/gtklevelbaraccessible.c a11y/gtklinkbuttonaccessible.c a11y/gtklistboxaccessible.c a11y/gtklistboxrowaccessible.c a11y/gtklockbuttonaccessible.c a11y/gtkmenuaccessible.c a11y/gtkmenubuttonaccessible.c a11y/gtkmenushellaccessible.c a11y/gtkmenuitemaccessible.c a11y/gtknotebookaccessible.c a11y/gtknotebookpageaccessible.c a11y/gtkpanedaccessible.c a11y/gtkpopoveraccessible.c a11y/gtkprogressbaraccessible.c a11y/gtkradiobuttonaccessible.c a11y/gtkradiomenuitemaccessible.c a11y/gtkrangeaccessible.c a11y/gtkrenderercellaccessible.c a11y/gtkscaleaccessible.c a11y/gtkscalebuttonaccessible.c a11y/gtkscrolledwindowaccessible.c a11y/gtkspinbuttonaccessible.c a11y/gtkspinneraccessible.c a11y/gtkstatusbaraccessible.c a11y/gtkstackaccessible.c a11y/gtkswitchaccessible.c a11y/gtktextcellaccessible.c a11y/gtktextviewaccessible.c a11y/gtktogglebuttonaccessible.c a11y/gtktoplevelaccessible.c a11y/gtktreeviewaccessible.c a11y/gtkwidgetaccessible.c a11y/gtkwindowaccessible.c deprecated/gtkactivatable.c deprecated/gtkaction.c deprecated/gtkactiongroup.c deprecated/gtkalignment.c deprecated/gtkarrow.c deprecated/gtkcolorsel.c deprecated/gtkcolorseldialog.c deprecated/gtkfontsel.c deprecated/gtkgradient.c deprecated/gtkhandlebox.c deprecated/gtkhbbox.c deprecated/gtkhbox.c deprecated/gtkhpaned.c deprecated/gtkhscale.c deprecated/gtkhscrollbar.c deprecated/gtkhseparator.c deprecated/gtkhsv.c deprecated/gtkiconfactory.c deprecated/gtkimagemenuitem.c deprecated/gtkmisc.c deprecated/gtknumerableicon.c deprecated/gtkradioaction.c deprecated/gtkrc.c deprecated/gtkrecentaction.c deprecated/gtkstatusicon.c deprecated/gtkstock.c deprecated/gtkstyle.c deprecated/gtkstyleproperties.c deprecated/gtksymboliccolor.c deprecated/gtktable.c deprecated/gtktearoffmenuitem.c deprecated/gtkthemingengine.c deprecated/gtktoggleaction.c deprecated/gtkuimanager.c deprecated/gtkvbbox.c deprecated/gtkvbox.c deprecated/gtkvscale.c deprecated/gtkvscrollbar.c deprecated/gtkvseparator.c deprecated/gtkvpaned.c inspector/action-editor.c inspector/actions.c inspector/cellrenderergraph.c inspector/css-editor.c inspector/css-node-tree.c inspector/data-list.c inspector/general.c inspector/gestures.c inspector/graphdata.c inspector/gtkstackcombo.c inspector/gtktreemodelcssnode.c inspector/init.c inspector/inspect-button.c inspector/magnifier.c inspector/menu.c inspector/misc-info.c inspector/object-hierarchy.c inspector/object-tree.c inspector/prop-editor.c inspector/prop-list.c inspector/resource-list.c inspector/selector.c inspector/signals-list.c inspector/size-groups.c inspector/statistics.c inspector/strv-editor.c inspector/treewalk.c inspector/visual.c inspector/window.c gtkactionmuxer.c gtkactionobserver.c gtkactionobservable.c gtkactionable.c gtkquery.c gtksearchbar.c gtksearchentry.c gtksearchengine.c gtksearchenginesimple.c gtksearchenginemodel.c fnmatch.c gtkaboutdialog.c gtkaccelgroup.c gtkaccellabel.c gtkaccelmap.c gtkaccessible.c gtkactionbar.c gtkactionhelper.c gtkadjustment.c gtkallocatedbitmask.c gtkappchooser.c gtkappchooserwidget.c gtkappchooserbutton.c gtkappchooserdialog.c gtkapplication.c gtkapplicationaccels.c gtkapplicationimpl.c gtkapplicationwindow.c gtkaspectframe.c gtkassistant.c gtkbbox.c gtkbin.c gtkbindings.c gtkbookmarksmanager.c gtkborder.c gtkbox.c gtkboxgadget.c gtkbuildable.c gtkbuilder.c gtkbuilderparser.c gtkbuilder-menus.c gtkbuiltinicon.c gtkbutton.c gtkcairoblur.c gtkcalendar.c gtkcellarea.c gtkcellareabox.c gtkcellareaboxcontext.c gtkcellareacontext.c gtkcelleditable.c gtkcelllayout.c gtkcellrenderer.c gtkcellrendereraccel.c gtkcellrenderercombo.c gtkcellrendererpixbuf.c gtkcellrendererprogress.c gtkcellrendererspin.c gtkcellrendererspinner.c gtkcellrenderertext.c gtkcellrenderertoggle.c gtkcellview.c gtkcheckbutton.c gtkcheckmenuitem.c gtkcolorbutton.c gtkcolorchooser.c gtkcolorchooserwidget.c gtkcolorchooserdialog.c gtkcoloreditor.c gtkcolorpicker.c gtkcolorpickerkwin.c gtkcolorpickerportal.c gtkcolorpickershell.c gtkcolorplane.c gtkcolorscale.c gtkcolorswatch.c gtkcolorutils.c gtkcombobox.c gtkcomboboxtext.c gtkcomposetable.c gtkcontainer.c gtkcssanimation.c gtkcssanimatedstyle.c gtkcssarrayvalue.c gtkcssbgsizevalue.c gtkcssbordervalue.c gtkcsscalcvalue.c gtkcsscolorvalue.c gtkcsscornervalue.c gtkcsscustomgadget.c gtkcsscustomproperty.c gtkcssdimensionvalue.c gtkcsseasevalue.c gtkcssenumvalue.c gtkcssenginevalue.c gtkcssgadget.c gtkcssiconthemevalue.c gtkcssimage.c gtkcssimagebuiltin.c gtkcssimagecrossfade.c gtkcssimagefallback.c gtkcssimagegradient.c gtkcssimageicontheme.c gtkcssimagelinear.c gtkcssimageradial.c gtkcssimagesurface.c gtkcssimageurl.c gtkcssimagerecolor.c gtkcssimagescaled.c gtkcssimagevalue.c gtkcssinheritvalue.c gtkcssinitialvalue.c gtkcsskeyframes.c gtkcsslookup.c gtkcssmatcher.c gtkcssnode.c gtkcssnodedeclaration.c gtkcssnodestylecache.c gtkcssnumbervalue.c gtkcsspalettevalue.c gtkcssparser.c gtkcsspathnode.c gtkcsspositionvalue.c gtkcssprovider.c gtkcssrepeatvalue.c gtkcssrgbavalue.c gtkcsssection.c gtkcssselector.c gtkcssstringvalue.c gtkcssstyle.c gtkcssstylechange.c gtkcssshadowsvalue.c gtkcssshadowvalue.c gtkcssshorthandproperty.c gtkcssshorthandpropertyimpl.c gtkcssstaticstyle.c gtkcssstylefuncs.c gtkcssstyleproperty.c gtkcssstylepropertyimpl.c gtkcsstransformvalue.c gtkcsstransientnode.c gtkcsstransition.c gtkcsstypedvalue.c gtkcssunsetvalue.c gtkcsstypes.c gtkcssvalue.c gtkcsswidgetnode.c gtkcsswin32sizevalue.c gtkdialog.c gtkdragsource.c gtkdrawingarea.c gtkeditable.c gtkemojichooser.c gtkemojicompletion.c gtkentry.c gtkentrybuffer.c gtkentrycompletion.c gtkeventbox.c gtkeventcontroller.c gtkeventcontrollerkey.c gtkeventcontrollermotion.c gtkeventcontrollerscroll.c gtkexpander.c gtkfilechooser.c gtkfilechooserbutton.c gtkfilechooserdialog.c gtkfilechooserembed.c gtkfilechooserentry.c gtkfilechoosernative.c gtkfilechoosernativeportal.c gtkfilechooserutils.c gtkfilechooserwidget.c gtkfilefilter.c gtkfilesystem.c gtkfilesystemmodel.c gtkfixed.c gtkflowbox.c gtkfontbutton.c gtkfontchooser.c gtkfontchooserdialog.c gtkfontchooserutils.c gtkfontchooserwidget.c gtkframe.c gtkgladecatalog.c gtkgesture.c gtkgesturedrag.c gtkgesturelongpress.c gtkgesturemultipress.c gtkgesturepan.c gtkgesturerotate.c gtkgesturesingle.c gtkgesturestylus.c gtkgestureswipe.c gtkgesturezoom.c gtkglarea.c gtkgrid.c gtkheaderbar.c gtkhsla.c gtkicon.c gtkiconcache.c gtkiconcachevalidator.c gtkiconhelper.c gtkicontheme.c gtkiconview.c gtkimage.c gtkimagedefinition.c gtkimcontext.c gtkimcontextsimple.c gtkimmodule.c gtkimmulticontext.c gtkinfobar.c gtkinvisible.c gtkkeyhash.c gtkkineticscrolling.c gtklabel.c gtklayout.c gtklevelbar.c gtklinkbutton.c gtklistbox.c gtkliststore.c gtklockbutton.c gtkmain.c gtkmagnifier.c gtkmenu.c gtkmenubar.c gtkmenubutton.c gtkmenuitem.c gtkmenusectionbox.c gtkmenushell.c gtkmenutracker.c gtkmenutrackeritem.c gtkmenutoolbutton.c gtkmessagedialog.c gtkmnemonichash.c gtkmodelmenuitem.c gtkmodelbutton.c gtkmodifierstyle.c gtkmodules.c gtkmountoperation.c gtknativedialog.c gtknotebook.c gtkoffscreenwindow.c gtkorientable.c gtkoverlay.c gtkpadcontroller.c gtkpagesetup.c gtkpaned.c gtkpango.c gtkpapersize.c gtkpathbar.c gtkplacessidebar.c gtkplacesview.c gtkplacesviewrow.c gtkprintcontext.c gtkprintoperation.c gtkprintoperationpreview.c gtkprintsettings.c gtkprintutils.c gtkprivate.c gtkprogressbar.c gtkprogresstracker.c gtkpixelcache.c gtkpopover.c gtkpopovermenu.c gtkradiobutton.c gtkradiomenuitem.c gtkradiotoolbutton.c gtkrange.c gtkrbtree.c gtkrecentchooserdefault.c gtkrecentchooserdialog.c gtkrecentchoosermenu.c gtkrecentchooserwidget.c gtkrecentchooserutils.c gtkrecentchooser.c gtkrecentfilter.c gtkrecentmanager.c gtkrender.c gtkrenderbackground.c gtkrenderborder.c gtkrendericon.c gtkrevealer.c gtkroundedbox.c gtkscale.c gtkscalebutton.c gtkscrollable.c gtkscrollbar.c gtkscrolledwindow.c gtkselection.c gtkseparator.c gtkseparatormenuitem.c gtkseparatortoolitem.c gtksettings.c gtkshortcutsgroup.c gtkshortcutlabel.c gtkshortcutsshortcut.c gtkshortcutssection.c gtkshortcutswindow.c gtksidebarrow.c gtksizegroup.c gtksizerequest.c gtksizerequestcache.c gtkshow.c gtkstacksidebar.c gtkspinbutton.c gtkspinner.c gtkstack.c gtkstackswitcher.c gtkstatusbar.c gtkstyleanimation.c gtkstylecascade.c gtkstylecontext.c gtkstyleproperty.c gtkstyleprovider.c gtkstyleproviderprivate.c gtkswitch.c gtktestutils.c gtktextattributes.c gtktextbtree.c gtktextbuffer.c gtktextbufferrichtext.c gtktextbufferserialize.c gtktextchild.c gtktextdisplay.c gtktexthandle.c gtktextiter.c gtktextlayout.c gtktextmark.c gtktextsegment.c gtktexttag.c gtktexttagtable.c gtktexttypes.c gtktextutil.c gtktextview.c gtktogglebutton.c gtktoggletoolbutton.c gtktoolbar.c gtktoolbutton.c gtktoolitem.c gtktoolitemgroup.c gtktoolpalette.c gtktoolshell.c gtktooltip.c gtktooltipwindow.c gtktrashmonitor.c gtktreedatalist.c gtktreednd.c gtktreemenu.c gtktreemodel.c gtktreemodelfilter.c gtktreemodelsort.c gtktreeselection.c gtktreesortable.c gtktreestore.c gtktreeview.c gtktreeviewcolumn.c gtkutils.c gtkvolumebutton.c gtkviewport.c gtkwidget.c gtkwidgetpath.c gtkwindow.c gtkwindowgroup.c gtkwin32draw.c gtkwin32theme.c gdkpixbufutils.c language-names.c script-names.c gtkclipboard.c gtkdnd.c gtkdragdest.c gtkprintoperation-unix.c gtktypebuiltins.c gtksocket.c gtkplug.c /usr/bin/g-ir-scanner libgtk-3.la ../gdk/Gdk-3.0.gir Makefile --output Gtk-3.0.gir
g-ir-scanner: link: /bin/sh ../libtool --mode=link --tag=CC gcc -o /home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/Gtk-3.0 -export-dynamic -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -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 /home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/Gtk-3.0.o -L. libgtk-3.la ../gdk/libgdk-3.la -lgio-2.0 -lgobject-2.0 -Wl,--export-dynamic -pthread -lgmodule-2.0 -lglib-2.0 -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -flto -fuse-linker-plugin
libtool: link: gcc -o /home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/.libs/Gtk-3.0 -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -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 /home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/Gtk-3.0.o -Wl,--export-dynamic -pthread -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -flto -fuse-linker-plugin -Wl,--export-dynamic  -L. ./.libs/libgtk-3.so /home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gdk/.libs/libgdk-3.so -latk-1.0 -latk-bridge-2.0 -lharfbuzz -lpangoft2-1.0 ../gdk/.libs/libgdk-3.so -lpangocairo-1.0 -lpango-1.0 -lgdk_pixbuf-2.0 -lcairo-gobject -lXinerama -lXi -lXrandr -lXcursor -lXcomposite -lXdamage -lXfixes -lxkbcommon -lwayland-cursor -lwayland-egl -lwayland-client -lcairo -lpixman-1 -lfontconfig -lfreetype -lpng16 -lz -lxcb-shm -lxcb -lxcb-render -lXrender -lX11 -lXext -lepoxy -lfribidi -lm -lrt -lgio-2.0 -lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -pthread
Invalid GType function: 'gtk_accel_group_get_type'
Failed to find symbol 'gtk_accel_group_get_type'
gtkentry.c:2104: Warning: Gtk: multiple comment blocks documenting 'GtkEntry:inner-border:' identifier (already seen at gtkentry.c:888).
Command '['/home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/Gtk-3.0', '--introspect-dump=/home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/functions.txt,/home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk/tmp-introspect_5ficxd7/dump.xml']' returned non-zero exit status 1.
make[3]: *** [/usr/share/gobject-introspection-1.0/Makefile.introspection:156: Gtk-3.0.gir] Error 1
make[3]: Leaving directory '/home/tkloczko/rpmbuild/BUILD/gtk+-3.24.5/gtk'
make[2]: *** [Makefile:3151: all] Error 2
make[1]: *** [Makefile:723: all-recursive] Error 1

I'm curious .. if it is as same bug in gtk why using LTO exposes such bugs or why it is not possible to expose such bugs using LTO?

(In reply to Nick Clifton from comment #5)
> Created attachment 1534887 [details]
> Proposed patch
[..]
>   The attached patch should fix the problem.  Please could you try it out
>   and let me know if it works ?
> 
> PS: As for why the link works with gold, my best guess is that gold is 
>   not invoking the gobject-introspection tool.  (Or maybe the plugin
>   being used by gold does not invoke it).  So the link succeeds, but it
>   probably includes a bogus reference to the g_paste_settings_get_type
>   function somewhere.

Nick patch which you made does not work because this symbol is used in G_PASTE_TYPE_SETTINGS define which is used in another define and  g_object_new() param. I'm not familiar with glib gobject interface so I've asked gpaste maintainer to have look om the code.
At the moment I think that is the issue with gpaste code however other half of the story is that such source code a bit wrong coding is only possible to find when LTO is used.
In other words I think that kind of bug(s) may may be on both areas.

Sorry do you have any update about this LTO related issue? :)

(In reply to Tomasz Kłoczko from comment #9)

Not really. :-}

The "Invalid GType function: 'g_paste_settings_get_type'" error message is not actually
coming from the linker (either ld.bfd or ld.gold) but rather the gobject-introspection
tool.  (Which I think is part of the gtk build environment, but I could well be wrong
about this).  The tool is being invoked by the gpaste build system, in its command line
form (called "g-ir-scanner"), and this tool is *also* invoking the linker to link 
together the output file(s) that it creates with the other object files that make up
gpaste.  The problem is that the error message from g-ir-scanner is getting mixed in
with the output describing the link step, so it looks like a linker error message,
rather than a g-ir-scanner error message.

As for why enabling LTO is causing this - well my guess would be that when LTO is used
the libgpaste.la library is different from when LTO is not used.  (With LTO enabled
a lot of extra information is stored in the object files that make up the library).
The g-ir-scanner program includes the libgaste.la library as part of its scan, so a
change in the library's contents might affect its output.  (This is all guesswork on
my part however).

Note - the g_paste_settings_get_type function really does appear to be missing from
the gpaste sources.  It is referenced gpaste-settings.h and gpaste-settings.c sure,
but it does not appear to be defined anywhere.

Now for the linker part of this conundrum.  The "Failed to find symbol 'g_paste_settings_get_type'"
error message is there because the gpaste sources include a special file that tells
the linker which version numbers should be associated with which symbols exported by
the libgaste library.  (This is the src/libgpaste/libgpaste.sym file).  This file
includes an entry for g_paste_get_type, but since this function does not actually
exist, no version can be associated with it.  The bfd linker generates an error
message for this, the gold linker does not.  (It can be argued either way as to 
which linker is correct.  Personally I go with the bfd linker).

My theory is that the g_paste_settings_get_type function should not be missing,
and that it needs to be added (or re-added) to the gpaste sources.

Does this help ?

Cheers
  Nick

g-i-r scanner .. hmm. Theoretically it should only scan :/
I must check what exactly it does and how exactly linking may be affected by what this tool is doing when LTO is used.
Will try to have look on this a bit closer from exactly that angle.

I think that I more more than one case when g-i-r is involved :/
Nevertheless in all those cases after disable LTO whole package is building correctly.

Nick Thx for update :)

Note, LTO is by default (unless using -ffat-lto-objects) generating thin objects during normal compilation, that contain pretty much just the LTO bytecode and nothing else, so if there is some other tool that processes the archives and tries to do something with them, it will not see anything of interest there (unless using the LTO linker plugin and is prepared to deal with that).

In my experiments with LTO I'm using AR=gcc-ar NM=gcc-nm RANLIB=gcc-ranlib in build env and I'm adding to CFLAGS -flto and to LDFLAGS flto -fuse-linker-plugin.
Jakub if it is any easier method please let me know :)

That is fine if it propagates down through the Makefiles or whatever build system it has.
The question is what that tool does.  Try that -ffat-lto-objects and see if it makes it happy (though of course that would make build time somewhat slower).

Only kind of update.
When I've switched to gold ld I was able to link gpaste and I was able to pas that point in gtk3 where g-i-r scanner been failing.

Now I have in gtk linking issue:

/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libcairo.so: error: undefined reference to 'pthread_mutexattr_init'
/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libcairo.so: error: undefined reference to 'pthread_mutexattr_destroy'
/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libcairo.so: error: undefined reference to 'pthread_mutexattr_settype'

But that looks like bug ion linking cairo (missing -lpthread).

(In reply to Tomasz Kłoczko from comment #15)

> But that looks like bug ion linking cairo (missing -lpthread).

Exactly.

This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to '31'.

This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to 31.

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