Hi Alex, Thanks for the quick response.
The crash typically requires several toggles (3-10) to trigger, and I reproduced it with active torrents downloading. I'm afraid I'm not a C++ developer so cannot comment on the code internals or the proposed patch. I am however familiar with deb packaging and can apt-get source and rebuild a patched package myself if that would help. I have since downgraded to 4.1.0~beta2 from trixie main to avoid the crash, but I am happy to upgrade and test if you produce a patched package, or build one myself from a patch. Regards, Jan On Mon, 16 Mar 2026 at 23:35, Alexandre Rossi <[email protected]> wrote: > Hi, > > > # Steps to reproduce > > > > 1. Open transmission-gtk with active torrents > > 2. Open Edit > Preferences > Speed > > 3. Interact repeatedly with any control in the "Scheduled times" section > (checkbox, start time, end time, day-of-week) > > 4. Crash occurs, sometimes after a few interactions > > > > The crash also occurs when the scheduled time fires automatically. > > This feature is especially useful where metered data includes > differently-priced "night-owl" data. > > I played a bit with those controls and could not reproduce the crash. > > > `Actions.cc:183` has no missing-key guard: > > ``` > > $ grep -n 'key_to_action.at\|key_to_action.find' gtk/Actions.cc > > 183: return key_to_action.at(name); > > ``` > > > > The action is registered under a hyphenated name in `Actions.cc`, but > `Application.cc` looks it up via the raw libtransmission quark string > (which uses underscores): > > ``` > > $ grep -n 'alt.speed.enabled' gtk/Actions.cc gtk/Application.cc > > Actions.cc:73: "alt-speed-enabled"sv, > > Application.cc:1302: case TR_KEY_alt_speed_enabled: > > Application.cc:1306: > gtr_action_set_toggled(std::string(tr_quark_get_string_view(key)), b); > > ``` > > From a quick look, do you mean that the following patch might fix this? > > --- i/gtk/Application.cc > +++ w/gtk/Application.cc > @@ -1275,7 +1275,7 @@ void Application::Impl::on_prefs_changed(tr_quark > const key) > { > bool const b = gtr_pref_flag_get(key); > tr_sessionUseAltSpeed(tr, b); > - > gtr_action_set_toggled(std::string(tr_quark_get_string_view(key)), b); > + > gtr_action_set_toggled(std::string(tr_quark_get_string_view(TR_KEY_alt_speed_enabled_kebab_APICOMPAT)), > b); > break; > } > > Thanks, > > Alex >
