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https://github.com/neovim/neovim.git
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cb757f2663
Problem: Build is not reproducible, because generated source files (.c/.h/) are not deterministic, mostly because Lua pairs() is unordered by design (for security). https://github.com/LuaJIT/LuaJIT/issues/626#issuecomment-707005671 https://www.lua.org/manual/5.1/manual.html#pdf-next > The order in which the indices are enumerated is not specified [...] > >> The hardening of the VM deliberately randomizes string hashes. This in >> turn randomizes the iteration order of tables with string keys. Solution: - Update the code generation scripts to be deterministic. - That is only a partial solution: the exported function (funcs_metadata.generated.h) and ui event (ui_events_metadata.generated.h) metadata have some mpack'ed tables, which are not serialized deterministically. - As a workaround, introduce `PRG_GEN_LUA` cmake setting, so you can inject a modified build of luajit (with LUAJIT_SECURITY_PRN=0) that preserves table order. - Longer-term we should change the mpack'ed data structure so it no longer uses tables keyed by strings. Closes #20124 Co-Authored-By: dundargoc <gocdundar@gmail.com> Co-Authored-By: Arnout Engelen <arnout@bzzt.net>
70 lines
1.7 KiB
Lua
70 lines
1.7 KiB
Lua
if arg[1] == '--help' then
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print('Usage: gen_events.lua src/nvim enum_file event_names_file')
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os.exit(0)
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end
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local nvimsrcdir = arg[1]
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local fileio_enum_file = arg[2]
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local names_file = arg[3]
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package.path = nvimsrcdir .. '/?.lua;' .. package.path
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local auevents = require('auevents')
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local events = auevents.events
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local aliases = auevents.aliases
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local enum_tgt = io.open(fileio_enum_file, 'w')
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local names_tgt = io.open(names_file, 'w')
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enum_tgt:write('typedef enum auto_event {')
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names_tgt:write([[
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static const struct event_name {
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size_t len;
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char *name;
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event_T event;
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} event_names[] = {]])
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for i, event in ipairs(events) do
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enum_tgt:write(('\n EVENT_%s = %u,'):format(event:upper(), i - 1))
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names_tgt:write(('\n {%u, "%s", EVENT_%s},'):format(#event, event, event:upper()))
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if i == #events then -- Last item.
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enum_tgt:write(('\n NUM_EVENTS = %u,'):format(i))
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end
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end
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for _, v in ipairs(aliases) do
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local alias = v[1]
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local event = v[2]
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names_tgt:write(('\n {%u, "%s", EVENT_%s},'):format(#alias, alias, event:upper()))
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end
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names_tgt:write('\n {0, NULL, (event_T)0},')
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enum_tgt:write('\n} event_T;\n')
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names_tgt:write('\n};\n')
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local gen_autopat_events = function(name)
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names_tgt:write(string.format('\nstatic AutoPat *%s[NUM_EVENTS] = {\n ', name))
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local line_len = 1
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for _ = 1,((#events) - 1) do
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line_len = line_len + #(' NULL,')
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if line_len > 80 then
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names_tgt:write('\n ')
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line_len = 1 + #(' NULL,')
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end
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names_tgt:write(' NULL,')
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end
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if line_len + #(' NULL') > 80 then
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names_tgt:write('\n NULL')
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else
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names_tgt:write(' NULL')
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end
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names_tgt:write('\n};\n')
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end
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gen_autopat_events("first_autopat")
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gen_autopat_events("last_autopat")
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enum_tgt:close()
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names_tgt:close()
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