I compiled Emacs-29 with PGTK (USE=-X gtk) and without toolkit-scroll-bars, and whenever I went to drag the scroll bar with my mouse it crashed Emacs. I submitted the bug to Emacs, and the dev I spoke with resolved it by disallowing this configuration. The thread for that bug report is here, though it seems to include only the first and last message: https://lists.gnu.org/archive/html/emacs-bug-tracker/2022-03/msg00569.html They asked me to ask the Gentoo developers to similarly disallow this configuration in the ebuild, and also to disallow PGTK by default as "it should not be used with X". This is a quote of their explanation of the issue, and their request: ''' This is because the PGTK port assumes toolkit scroll bars are always available, but compiling without them causes the wrong code to be enabled in keyboard.c, which then aborts upon "unexpected" scroll bar events. I will update the configure script to disallow this specific configuration, but in the meantime, please tell the Gentoo developers to fix their build script. Please tell them to also turn PGTK off by default, people shouldn't be using it on X. ''' Please let me know if I can provide anything else. Reproducible: Always Steps to Reproduce: 1.Compile emacs with PGTK and without 'toolkit-scroll-bars' 2.run 'emacs -Q' 3.try to drag scroll bar with mouse Actual Results: Emacs crashes Expected Results: The contents of the window scroll up or down.
Sorry, but I just found the full bug report thread: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=54629
Thanks for the report. I'm pretty sure pgtk is off by default though. ulm put a fair amount of thought into the logic and it's only on with USE="gtk -X": ># Emacs supports these window systems: ># X11, pure GTK (without X11), or Nextstep (Aqua/Cocoa). ># General GUI support is enabled by the "gui" USE flag, then ># the window system is selected as follows: ># "aqua" -> Nextstep ># "gtk -X" -> pure GTK ># otherwise -> X11 ># For X11 there is the further choice of toolkits GTK, Motif, ># Athena (Lucid), or no toolkit. They are enabled (in order of ># preference) with the "gtk", "motif", "Xaw3d", and "athena" flags. from https://gitweb.gentoo.org/repo/gentoo.git/tree/app-editors/emacs/emacs-29.0.9999.ebuild#n214.
Indeed we currently have this (for the USE="gui gtk -X" case): elif use gtk && ! use X; then einfo "Configuring to build with pure GTK (without X11) support" # [...] myconf+=" $(use_with toolkit-scroll-bars)" IIUC it needs to be changed to an unconditional --with-toolkit-scroll-bars.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=badb974e4774dc877ff652fc712114c9d1b5f6d9 commit badb974e4774dc877ff652fc712114c9d1b5f6d9 Author: Ulrich Müller <ulm@gentoo.org> AuthorDate: 2022-03-30 07:17:27 +0000 Commit: Ulrich Müller <ulm@gentoo.org> CommitDate: 2022-03-30 07:18:37 +0000 app-editors/emacs: Always enable toolkit-scroll-bars with pure GTK Closes: https://bugs.gentoo.org/836392 Signed-off-by: Ulrich Müller <ulm@gentoo.org> app-editors/emacs/emacs-29.0.9999.ebuild | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Thanks for reporting!
