The commit 15388716f29d ("tests: disable lua_dump_test"). 1. https://github.com/ligurio/lua-c-api-tests/issues/19

CITATION.cff files are plain text files with human- and machine-readable citation information for software (and datasets). Code developers can include them in their repositories to let others know how to correctly cite their software, see [1] and [2]. The patch adds a citation information for the project. 1. https://citation-file-format.github.io/ 2. https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-citation-files

The patch adds a shared library that implements a custom mutation and crossover functions for LibFuzzer. These functions allows to implement mutation and crossover logic with Lua programming language and thus replace the default mutation and crossover functions: `LLVMFuzzerCustomMutator` and `LLVMFuzzerCustomCrossover`. For implementing custom mutation function in Lua one need to create a Lua script with function `LLVMFuzzerCustomMutator` and set a path to the script in environment variable with name `LIBFUZZER_LUA_SCRIPT`. When this environment variable is not set default script name `libfuzzer_lua_script.lua` will be used. The same with custom crossover function - one need create a Lua script with defined Lua function `LLVMFuzzerCustomCrossover` and set a path to the script in environment variable `LIBFUZZER_LUA_SCRIPT`. Pay attention that both functions uses its own Lua state internally. Note, `libluamut` is unused now and building is disabled by default. Follows up #19

``` [60/62] Building CXX object tests/capi/luaL_loadbuffer_proto/CMakeFiles/luaL_loadbuffer_proto_test.dir/luaL_loadbuffer_proto_test.cc.o /home/runner/work/lua-c-api-tests/lua-c-api-tests/tests/capi/luaL_loadbuffer_proto/luaL_loadbuffer_proto_test.cc:308:30: warning: missing field 'B' initializer [-Wmissing-field-initializers] struct str_Writer state = {0}; ^ 1 warning generated. ```

The commit 366c85564874 ("lua.c loads 'readline' dynamically") [1] breaks a build. The proposed patches fixes that. 1. https://github.com/lua/lua/commit/366c85564874d560b3608349f752e9e490f9002d

The patch updates integration of Undefined Behaviour Sanitizer with LuaJIT: some suppressions removed, some suppressions added per file, not project-wide. The patch is based on the patch made by Sergey Kaplun [1]. 1. https://github.com/tarantool/luajit/commit/b9ff5ae8ea60516f630a380948bfd140c237385a

- clamp before cleaning string because cleaning is not cheap (O(n), where max n is equal to kMaxStrLength) - call cleaning for identifiers only, there is no sense to cleaning string literals - replace symbols disallowed by Lua grammar in indentifier's names with '_' The patch saves 16 sec on 145k samples (401 sec before the patch and 385 sec after the patch). It is actually not so much, but it is about 2.5 min per hour.