(around|inner) motions for (next|last) object #9
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ghost
assigned 
|
I think that to implement this in a kak script, we're missing the same info described in : |
|
I wrote a kak script which seems to do the job: https://github.com/Delapouite/kakoune-text-objects |
krobelus
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Mar 12, 2023
My terminal's workspace is configured to be displayed on an external
monitor if connected. When I connect my external monitor, the workspace
switches to that monitor and Kakoune segfaults consistently.
The crash happens in "TerminalUI::Screen::output" where we access a
dangling reference
auto output_line = [&](const Line& line) {
ColumnCount pending_move = 0;
for (auto& [text, skip, face] : line.atoms)
{
/-> if (text.empty() and skip == 0)
| continue;
|
cannot access memory referenced by "text"
The stack trace is
Program received signal SIGSEGV, Segmentation fault.
0x0000555555a5f1ac in Kakoune::String::Data::is_long (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:180
(gdb) bt
#0 0x0000555555a5f1ac in Kakoune::String::Data::is_long (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:180
mawww#1 0x0000555555a5f1d6 in Kakoune::String::Data::size (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:181
mawww#2 0x0000555555de34e4 in Kakoune::String::length (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:139
mawww#3 Kakoune::StringOps<Kakoune::String, char>::empty (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:68
mawww#4 operator() (__closure=0x7fffffffba50, line=...) at terminal_ui.cc:303
mawww#5 0x0000555555de45aa in Kakoune::TerminalUI::Screen::output (this=0x5555560a7a60, force=true, synchronized=true, writer=...) at terminal_ui.cc:371
mawww#6 0x0000555555de548a in Kakoune::TerminalUI::redraw (this=0x5555560a7a40, force=true) at terminal_ui.cc:535
mawww#7 0x0000555555de579e in Kakoune::TerminalUI::refresh (this=0x5555560a7a40, force=true) at terminal_ui.cc:556
mawww#8 0x0000555555a9ae71 in Kakoune::Client::redraw_ifn (this=0x55555609f9b0) at client.cc:284
mawww#9 0x0000555555aab3db in Kakoune::ClientManager::redraw_clients (this=0x7fffffffd060) at client_manager.cc:233
mawww#10 0x0000555555c86ef8 in Kakoune::run_server (session="", server_init="", client_init="", init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal,
debug_flags=Kakoune::DebugFlags::None, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:908
mawww#11 0x0000555555c8bb76 in main (argc=2, argv=0x7fffffffe7b8) at main.cc:1263
We check for terminal resize in
TerminalUI::TerminalUI
TerminalUI::get_next_key
TerminalUI::draw
TerminalUI::suspend
I think neither of those happens when the window is moved.
Looks like TerminalUI::refresh relies on up-to-date dimensions,
so add a resize check here too, fixing the crash.
krobelus
added a commit
to krobelus/kakoune
that referenced
this issue
Mar 12, 2023
When Kakoune's terminal is shown my laptop monitor and I plug in my
external monitor, the terminal's workspace will move to that external
monitor. When this happens, Kakoune segfaults consistently.
The crash happens in "TerminalUI::Screen::output" where we access a
dangling reference
auto output_line = [&](const Line& line) {
ColumnCount pending_move = 0;
for (auto& [text, skip, face] : line.atoms)
{
/-> if (text.empty() and skip == 0)
| continue;
|
cannot access memory referenced by "text"
The stack trace is
Program received signal SIGSEGV, Segmentation fault.
0x0000555555a5f1ac in Kakoune::String::Data::is_long (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:180
(gdb) bt
#0 0x0000555555a5f1ac in Kakoune::String::Data::is_long (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:180
mawww#1 0x0000555555a5f1d6 in Kakoune::String::Data::size (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:181
mawww#2 0x0000555555de34e4 in Kakoune::String::length (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:139
mawww#3 Kakoune::StringOps<Kakoune::String, char>::empty (this=0x1a) at /home/johannes/git/kakoune/src/string.hh:68
mawww#4 operator() (__closure=0x7fffffffba50, line=...) at terminal_ui.cc:303
mawww#5 0x0000555555de45aa in Kakoune::TerminalUI::Screen::output (this=0x5555560a7a60, force=true, synchronized=true, writer=...) at terminal_ui.cc:371
mawww#6 0x0000555555de548a in Kakoune::TerminalUI::redraw (this=0x5555560a7a40, force=true) at terminal_ui.cc:535
mawww#7 0x0000555555de579e in Kakoune::TerminalUI::refresh (this=0x5555560a7a40, force=true) at terminal_ui.cc:556
mawww#8 0x0000555555a9ae71 in Kakoune::Client::redraw_ifn (this=0x55555609f9b0) at client.cc:284
mawww#9 0x0000555555aab3db in Kakoune::ClientManager::redraw_clients (this=0x7fffffffd060) at client_manager.cc:233
mawww#10 0x0000555555c86ef8 in Kakoune::run_server (session="", server_init="", client_init="", init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal,
debug_flags=Kakoune::DebugFlags::None, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:908
mawww#11 0x0000555555c8bb76 in main (argc=2, argv=0x7fffffffe7b8) at main.cc:1263
We check for terminal resize in
TerminalUI::TerminalUI
TerminalUI::get_next_key
TerminalUI::draw
TerminalUI::suspend
I think neither of those happens when the window is moved.
Looks like TerminalUI::refresh relies on up-to-date dimensions,
so add a resize check here too, fixing the crash.
krobelus
added a commit
to krobelus/kakoune
that referenced
this issue
Mar 18, 2023
When Kakoune's terminal is shown on my laptop monitor and I plug in my external monitor, the terminal's workspace will move to that external monitor. When this happens, Kakoune may segfault. There are multiple resize events (SIGWINCH) in quick succession; it crashes because we handle SIGWINCH during rendering. The problem happens during execution of "TerminalUI::Screen::output" (frame mawww#18). When we receive SIGWINCH while writing to stdout, write(2) fails with EAGAIN, prompting us to handle pending events (See ae001a1 (Run EventManager whenever writing to a file descriptor would block, 2022-05-10)). We update the screen size in check_resize() here: mawww#4 Kakoune::TerminalUI::check_resize (force=<optimized out>) at terminal_ui.cc:683 mawww#5 Kakoune::TerminalUI::get_next_key () at terminal_ui.cc:719 mawww#6 operator() (__closure=0x555555984198) at terminal_ui.cc:484 mawww#7 std::__invoke_impl<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__f=...) at /usr/include/c++/12.2.1/bits/invoke.h:61 mawww#8 std::__invoke_r<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__fn=...) at /usr/include/c++/12.2.1/bits/invoke.h:111 mawww#9 std::_Function_handler<void(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode), Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)> >::_M_invoke(const std::_Any_data &, Kakoune::FDWatcher &, Kakoune::FdEvents &&, Kakoune::EventMode &&) (__functor=..., __args#0=..., __args#1=<optimized out>, __args#2=<optimized out>) at /usr/include/c++/12.2.1/bits/std_function.h:290 mawww#10 std::function<void (Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>::operator()(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode) const (__args#2=<optimized out>, __args#1=<optimized out>, __args#0=...) at /usr/include/c++/12.2.1/bits/std_function.h:591 mawww#11 Kakoune::FDWatcher::run (mode=Kakoune::EventMode::Urgent, events=<optimized out>) at event_manager.cc:28 mawww#12 Kakoune::EventManager::handle_next_events (mode=mode@entry=Kakoune::EventMode::Urgent, sigmask=sigmask@entry=0x0, block=<optimized out>, block@entry=false) at event_manager.cc:143 mawww#13 Kakoune::write (fd=1, data=...) at file.cc:273 mawww#14 Kakoune::BufferedWriter<4096>::flush () at string.hh:236 mawww#15 Kakoune::BufferedWriter<4096>::write (data="t file.hh:145 mawww#16 Kakoune::TerminalUI::Screen::set_face (face=..., writer=...) at terminal_ui.cc:255 mawww#17 operator() (line=..., __closure=<synthetic pointer>) at terminal_ui.cc:326 mawww#18 Kakoune::TerminalUI::Screen::output (force=force@entry=true, synchronized=<optimized out>, writer=...) at terminal_ui.cc:402 mawww#19 Kakoune::TerminalUI::redraw (force=force@entry=true) at terminal_ui.cc:571 mawww#20 Kakoune::TerminalUI::refresh (force=<optimized out>) at terminal_ui.cc:592 mawww#21 Kakoune::Client::redraw_ifn () at client.cc:282 mawww#22 Kakoune::ClientManager::redraw_clients () at client_manager.cc:232 mawww#23 Kakoune::run_server (session=..., server_init=..., client_init=..., init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal, debug_flags=<optimized out>, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:893 mawww#24 main (argc=<optimized out>, argv=<optimized out>) at main.cc:1243 Thereafter, "TerminalUI::Screen::output" resumes and crashes due to a buffer overflow in "lines" which has been resized.
krobelus
added a commit
to krobelus/kakoune
that referenced
this issue
Mar 18, 2023
When Kakoune's terminal is shown on my laptop monitor and I plug in my external monitor, the terminal's workspace will move to that external monitor. When this happens, Kakoune may segfault. There are multiple resize events (SIGWINCH) in quick succession; it crashes because we handle SIGWINCH during rendering. The problem happens during execution of "TerminalUI::Screen::output" (frame mawww#18). When we receive SIGWINCH while writing to stdout, write(2) fails with EAGAIN, prompting us to handle pending events (See ae001a1 (Run EventManager whenever writing to a file descriptor would block, 2022-05-10)). We update the screen size in check_resize() here: mawww#4 Kakoune::TerminalUI::check_resize (force=<optimized out>) at terminal_ui.cc:683 mawww#5 Kakoune::TerminalUI::get_next_key () at terminal_ui.cc:719 mawww#6 operator() (__closure=0x555555984198) at terminal_ui.cc:484 mawww#7 std::__invoke_impl<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__f=...) at /usr/include/c++/12.2.1/bits/invoke.h:61 mawww#8 std::__invoke_r<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__fn=...) at /usr/include/c++/12.2.1/bits/invoke.h:111 mawww#9 std::_Function_handler<void(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode), Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)> >::_M_invoke(const std::_Any_data &, Kakoune::FDWatcher &, Kakoune::FdEvents &&, Kakoune::EventMode &&) (__functor=..., __args#0=..., __args#1=<optimized out>, __args#2=<optimized out>) at /usr/include/c++/12.2.1/bits/std_function.h:290 mawww#10 std::function<void (Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>::operator()(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode) const (__args#2=<optimized out>, __args#1=<optimized out>, __args#0=...) at /usr/include/c++/12.2.1/bits/std_function.h:591 mawww#11 Kakoune::FDWatcher::run (mode=Kakoune::EventMode::Urgent, events=<optimized out>) at event_manager.cc:28 mawww#12 Kakoune::EventManager::handle_next_events (mode=mode@entry=Kakoune::EventMode::Urgent, sigmask=sigmask@entry=0x0, block=<optimized out>, block@entry=false) at event_manager.cc:143 mawww#13 Kakoune::write (fd=1, data=...) at file.cc:273 mawww#14 Kakoune::BufferedWriter<4096>::flush () at string.hh:236 mawww#15 Kakoune::BufferedWriter<4096>::write (data="t file.hh:145 mawww#16 Kakoune::TerminalUI::Screen::set_face (face=..., writer=...) at terminal_ui.cc:255 mawww#17 operator() (line=..., __closure=<synthetic pointer>) at terminal_ui.cc:326 mawww#18 Kakoune::TerminalUI::Screen::output (force=force@entry=true, synchronized=<optimized out>, writer=...) at terminal_ui.cc:402 mawww#19 Kakoune::TerminalUI::redraw (force=force@entry=true) at terminal_ui.cc:571 mawww#20 Kakoune::TerminalUI::refresh (force=<optimized out>) at terminal_ui.cc:592 mawww#21 Kakoune::Client::redraw_ifn () at client.cc:282 mawww#22 Kakoune::ClientManager::redraw_clients () at client_manager.cc:232 mawww#23 Kakoune::run_server (session=..., server_init=..., client_init=..., init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal, debug_flags=<optimized out>, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:893 mawww#24 main (argc=<optimized out>, argv=<optimized out>) at main.cc:1243 Thereafter, "TerminalUI::Screen::output" resumes and crashes due to a buffer overflow in "lines" which has been resized.
krobelus
added a commit
to krobelus/kakoune
that referenced
this issue
Apr 16, 2023
When Kakoune's terminal is shown on my laptop monitor and I plug in my external monitor, the terminal's workspace will move to that external monitor. When this happens, Kakoune may segfault. There are multiple resize events (SIGWINCH) in quick succession; it crashes because we handle SIGWINCH during rendering. The problem happens during execution of "TerminalUI::Screen::output" (frame mawww#18). When we receive SIGWINCH while writing to stdout, write(2) fails with EAGAIN, prompting us to handle pending events (See ae001a1 (Run EventManager whenever writing to a file descriptor would block, 2022-05-10)). We update the screen size in check_resize() here: mawww#4 Kakoune::TerminalUI::check_resize (force=<optimized out>) at terminal_ui.cc:683 mawww#5 Kakoune::TerminalUI::get_next_key () at terminal_ui.cc:719 mawww#6 operator() (__closure=0x555555984198) at terminal_ui.cc:484 mawww#7 std::__invoke_impl<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__f=...) at /usr/include/c++/12.2.1/bits/invoke.h:61 mawww#8 std::__invoke_r<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__fn=...) at /usr/include/c++/12.2.1/bits/invoke.h:111 mawww#9 std::_Function_handler<void(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode), Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)> >::_M_invoke(const std::_Any_data &, Kakoune::FDWatcher &, Kakoune::FdEvents &&, Kakoune::EventMode &&) (__functor=..., __args#0=..., __args#1=<optimized out>, __args#2=<optimized out>) at /usr/include/c++/12.2.1/bits/std_function.h:290 mawww#10 std::function<void (Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>::operator()(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode) const (__args#2=<optimized out>, __args#1=<optimized out>, __args#0=...) at /usr/include/c++/12.2.1/bits/std_function.h:591 mawww#11 Kakoune::FDWatcher::run (mode=Kakoune::EventMode::Urgent, events=<optimized out>) at event_manager.cc:28 mawww#12 Kakoune::EventManager::handle_next_events (mode=mode@entry=Kakoune::EventMode::Urgent, sigmask=sigmask@entry=0x0, block=<optimized out>, block@entry=false) at event_manager.cc:143 mawww#13 Kakoune::write (fd=1, data=...) at file.cc:273 mawww#14 Kakoune::BufferedWriter<4096>::flush () at string.hh:236 mawww#15 Kakoune::BufferedWriter<4096>::write (data="t file.hh:145 mawww#16 Kakoune::TerminalUI::Screen::set_face (face=..., writer=...) at terminal_ui.cc:255 mawww#17 operator() (line=..., __closure=<synthetic pointer>) at terminal_ui.cc:326 mawww#18 Kakoune::TerminalUI::Screen::output (force=force@entry=true, synchronized=<optimized out>, writer=...) at terminal_ui.cc:402 mawww#19 Kakoune::TerminalUI::redraw (force=force@entry=true) at terminal_ui.cc:571 mawww#20 Kakoune::TerminalUI::refresh (force=<optimized out>) at terminal_ui.cc:592 mawww#21 Kakoune::Client::redraw_ifn () at client.cc:282 mawww#22 Kakoune::ClientManager::redraw_clients () at client_manager.cc:232 mawww#23 Kakoune::run_server (session=..., server_init=..., client_init=..., init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal, debug_flags=<optimized out>, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:893 mawww#24 main (argc=<optimized out>, argv=<optimized out>) at main.cc:1243 Thereafter, "TerminalUI::Screen::output" resumes and crashes due to a buffer overflow in "lines" which has been resized.
krobelus
added a commit
to krobelus/kakoune
that referenced
this issue
Apr 24, 2023
When Kakoune's terminal is shown on my laptop monitor and I plug in my external monitor, the terminal's workspace will move to that external monitor. When this happens, Kakoune may segfault. There are multiple resize events (SIGWINCH) in quick succession; it crashes because we handle SIGWINCH during rendering. The problem happens during execution of "TerminalUI::Screen::output" (frame mawww#18). When we receive SIGWINCH while writing to stdout, write(2) fails with EAGAIN, prompting us to handle pending events (See ae001a1 (Run EventManager whenever writing to a file descriptor would block, 2022-05-10)). We update the screen size in check_resize() here: mawww#4 Kakoune::TerminalUI::check_resize (force=<optimized out>) at terminal_ui.cc:683 mawww#5 Kakoune::TerminalUI::get_next_key () at terminal_ui.cc:719 mawww#6 operator() (__closure=0x555555984198) at terminal_ui.cc:484 mawww#7 std::__invoke_impl<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__f=...) at /usr/include/c++/12.2.1/bits/invoke.h:61 mawww#8 std::__invoke_r<void, Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>&, Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode> (__fn=...) at /usr/include/c++/12.2.1/bits/invoke.h:111 mawww#9 std::_Function_handler<void(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode), Kakoune::TerminalUI::TerminalUI()::<lambda(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)> >::_M_invoke(const std::_Any_data &, Kakoune::FDWatcher &, Kakoune::FdEvents &&, Kakoune::EventMode &&) (__functor=..., __args#0=..., __args#1=<optimized out>, __args#2=<optimized out>) at /usr/include/c++/12.2.1/bits/std_function.h:290 mawww#10 std::function<void (Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode)>::operator()(Kakoune::FDWatcher&, Kakoune::FdEvents, Kakoune::EventMode) const (__args#2=<optimized out>, __args#1=<optimized out>, __args#0=...) at /usr/include/c++/12.2.1/bits/std_function.h:591 mawww#11 Kakoune::FDWatcher::run (mode=Kakoune::EventMode::Urgent, events=<optimized out>) at event_manager.cc:28 mawww#12 Kakoune::EventManager::handle_next_events (mode=mode@entry=Kakoune::EventMode::Urgent, sigmask=sigmask@entry=0x0, block=<optimized out>, block@entry=false) at event_manager.cc:143 mawww#13 Kakoune::write (fd=1, data=...) at file.cc:273 mawww#14 Kakoune::BufferedWriter<4096>::flush () at string.hh:236 mawww#15 Kakoune::BufferedWriter<4096>::write (data="t file.hh:145 mawww#16 Kakoune::TerminalUI::Screen::set_face (face=..., writer=...) at terminal_ui.cc:255 mawww#17 operator() (line=..., __closure=<synthetic pointer>) at terminal_ui.cc:326 mawww#18 Kakoune::TerminalUI::Screen::output (force=force@entry=true, synchronized=<optimized out>, writer=...) at terminal_ui.cc:402 mawww#19 Kakoune::TerminalUI::redraw (force=force@entry=true) at terminal_ui.cc:571 mawww#20 Kakoune::TerminalUI::refresh (force=<optimized out>) at terminal_ui.cc:592 mawww#21 Kakoune::Client::redraw_ifn () at client.cc:282 mawww#22 Kakoune::ClientManager::redraw_clients () at client_manager.cc:232 mawww#23 Kakoune::run_server (session=..., server_init=..., client_init=..., init_buffer="fish-rust/src/ast.rs", init_coord=..., flags=Kakoune::ServerFlags::None, ui_type=Kakoune::UIType::Terminal, debug_flags=<optimized out>, files=ArrayView<Kakoune::StringView> = {...}) at main.cc:893 mawww#24 main (argc=<optimized out>, argv=<optimized out>) at main.cc:1243 Thereafter, "TerminalUI::Screen::output" resumes and crashes due to a buffer overflow in "lines" which has been resized.
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for whole or inner object, when expansion fails, and
opener_tokenwas specified, it will search the buffer backwards for the block or, ifcloser_tokenwas specified, it will search the buffer forwards.The text was updated successfully, but these errors were encountered: