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ba0ee081c8
Problem:
CID 655469: (DEADCODE)
/build/src/nvim/auto/lua_api_c_bindings.generated.h: 7696 in nlua_api_nvim__mcursor_cascading()
7690
7691 exit_0:
7692 arena_mem_free(arena_finish(&arena));
7693 if (ERROR_SET(&err)) {
7694 luaL_where(lstate, 1);
7695 if (err_param) {
>>> CID 655469: (DEADCODE)
>>> Execution cannot reach this statement: "lua_pushstring(lstate, "Inv...".
7696 lua_pushstring(lstate, "Invalid '");
7697 lua_pushstring(lstate, err_param);
7698 lua_pushstring(lstate, "': ");
7699 }
7700 lua_pushstring(lstate, err.msg);
7701 api_clear_error(&err);
/build/src/nvim/auto/lua_api_c_bindings.generated.h: 7702 in nlua_api_nvim__mcursor_cascading()
7696 lua_pushstring(lstate, "Invalid '");
7697 lua_pushstring(lstate, err_param);
7698 lua_pushstring(lstate, "': ");
7699 }
7700 lua_pushstring(lstate, err.msg);
7701 api_clear_error(&err);
>>> CID 655469: (DEADCODE)
>>> Execution cannot reach the expression "5" inside this statement: "lua_concat(lstate, (err_par...".
7702 lua_concat(lstate, err_param ? 5 : 2);
7703 return lua_error(lstate);
7704 }
7705
7706 return 1;
7707 }
CID 655468: Null pointer dereferences (FORWARD_NULL)
/src/nvim/mcursor.c: 833 in mc_ins_cascade()
827 mc_ins_span_push(keys.items, NULL);
828 mc_ins_preview_rebase();
829 }
830 } else if (ins.data != NULL && ins.size < mc_ins_span.done_len) {
831 // Capture shrank without a restart signal, e.g. completion surgery rewrote the pending keys.
832 mc_ins_cascade_restart();
>>> CID 655468: Null pointer dereferences (FORWARD_NULL)
>>> Passing null pointer "ins.data + mc_ins_span.done_len" to "mc_ins_keys_nonliteral", which dereferences it.
833 } else if (ins.size > mc_ins_span.done_len
834 && mc_ins_keys_nonliteral(ins.data + mc_ins_span.done_len,
835 ins.size - mc_ins_span.done_len)) {
836 // Non-literal keys pending (BS, CTRL-U, ...): re-execute instead of previewing.
837 mc_ins_span_flush(&ins, false);
838 } else {
CID 655467: Uninitialized variables (UNINIT)
/src/nvim/mcursor.c: 1041 in mc_vsel_refresh()
1035 for (size_t i = 0; i < kv_size(mc_cursors); i++) {
1036 Context *ctx = &kv_A(mc_cursors, i);
1037 pos_T pos;
1038 if (!mc_ctx_resolve(ctx, &pos)) {
1039 continue;
1040 }
>>> CID 655467: Uninitialized variables (UNINIT)
>>> Using uninitialized value "pos". Field "pos.coladd" is uninitialized.
1041 curwin->w_cursor = pos;
1042 check_cursor(curwin);
1044 Visual.select = false;
1045 nvim_feedkeys(span, cstr_as_string("nix"), false);
1046 if (!Visual.active) {
Solution:
- CID 655467 UNINIT: real (minor). `mc_vsel_refresh()` copied
uninitialized local into `curwin->w_cursor`, and garbage coladd
survived into the Visual replay (`equalpos()` compares it).
- Fix: `pos_T pos = { 0 }`
- CID 655468 FORWARD_NULL: false positive
- CID 655469 DEADCODE: generated code. `nvim__mcursor_cascading`
is flagged bc it is new,
- TODO: teach `gen_api_dispatch.lua` to omit the branch for
parameterless functions.
Neovim is a project that seeks to aggressively refactor Vim in order to:
- Simplify maintenance and encourage contributions
- Split the work between multiple developers
- Enable advanced UIs without modifications to the core
- Maximize extensibility
See the Introduction wiki page and Roadmap for more information.
Features
- Modern GUIs
- API access from any language including C/C++, C#, Clojure, D, Elixir, Go, Haskell, Java/Kotlin, JavaScript/Node.js, Julia, Lisp, Lua, Perl, Python, Racket, Ruby, Rust
- Embedded, scriptable terminal emulator
- Asynchronous job control
- Shared data (shada) among multiple editor instances
- XDG base directories support
- Compatible with most Vim plugins, including Ruby and Python plugins
See :help nvim-features for the full list, and :help news for noteworthy changes in the latest version!
Install from package
Pre-built packages for Windows, macOS, and Linux are found on the Releases page.
Managed packages are in Homebrew, Debian, Ubuntu, Fedora, Arch Linux, Void Linux, Gentoo, and more!
Install from source
See BUILD.md and supported platforms for details.
The build is CMake-based, but a Makefile is provided as a convenience. After installing the dependencies, run the following command.
make CMAKE_BUILD_TYPE=RelWithDebInfo
sudo make install
To install to a non-default location:
make CMAKE_BUILD_TYPE=RelWithDebInfo CMAKE_INSTALL_PREFIX=/full/path/
make install
CMake hints for inspecting the build:
cmake --build build --target helplists all build targets.build/CMakeCache.txt(orcmake -LAH build/) contains the resolved values of all CMake variables.build/compile_commands.jsonshows the full compiler invocations for each translation unit.
Transitioning from Vim
See :help nvim-from-vim for instructions.
Project layout
├─ cmake/ CMake utils
├─ cmake.config/ CMake defines
├─ cmake.deps/ subproject to fetch and build dependencies (optional)
├─ runtime/ plugins and docs
├─ src/nvim/ application source code (see src/nvim/README.md)
│ ├─ api/ API subsystem
│ ├─ eval/ Vimscript subsystem
│ ├─ event/ event-loop subsystem
│ ├─ generators/ code generation (pre-compilation)
│ ├─ lib/ generic data structures
│ ├─ lua/ Lua subsystem
│ ├─ msgpack_rpc/ RPC subsystem
│ ├─ os/ low-level platform code
│ └─ tui/ built-in UI
└─ test/ tests (see test/README.md)
License
Neovim contributions since b17d96 are licensed under the
Apache 2.0 license, except for contributions copied from Vim (identified by the
vim-patch token). See LICENSE.txt for details.