cosmopolitan/third_party/lua/test/big.lua
Michael Lenaghan 0dbf01bf1d
Bring Lua to 5.4.6. (#1214)
This essentially re-does the work of #875 on top of master.

This is what I did to check that Cosmo's Lua extensions still worked:

```
$ build/bootstrap/make MODE=aarch64 o/aarch64/third_party/lua/lua
$ ape o/aarch64/third_party/lua/lua
>: 10
10
>: 010
8
>: 0b10
2
>: string.byte("\e")
27
>: "Hello, %s" % {"world"}
Hello, world
>: "*" * 3
***
```

`luaL_traceback2` was used to show the stack trace with parameter
values; it's used in `LuaCallWithTrace`, which is used in Redbean to run
Lua code. You should be able to see the extended stack trace by running
something like this: `redbean -e "function a(b)c()end a(2)"` (with
"params" indicating the extended stack trace):

```
stack traceback:
 [string "function a(b)c()end a(2)"]:1: in function 'a', params: b = 2;
 [string "function a(b)c()end a(2)"]:1: in main chunk
```
@pkulchenko confirmed that I get the expected result with the updated
code.

This is what I did to check that Lua itself still worked:

```
$ cd third_party/lua/test/
$ ape ../../../o/aarch64/third_party/lua/lua all.lua
```

There's one test failure, in `files.lua`:

```
***** FILE 'files.lua'*****
testing i/o
../../../o/aarch64/third_party/lua/lua: files.lua:84: assertion failed!
stack traceback:
[C]: in function 'assert'
files.lua:84: in main chunk
(...tail calls...)
all.lua:195: in main chunk
[C]: in ?
.>>> closing state <<<
```

That isn't a result of these changes; the same test is failing in
master.

The failure is here:

```lua
if not _port then   -- invalid seek
  local status, msg, code = io.stdin:seek("set", 1000)
  assert(not status and type(msg) == "string" and type(code) == "number")
end
```

The test expects a seek to offset 1,000 on stdin to fail — but it
doesn't. `status` ends up being the new offset rather than `nil`.

If I comment out that one test, the remaining tests succeed.
2024-06-15 20:13:08 -04:00

82 lines
2.1 KiB
Lua

-- $Id: test/big.lua $
-- See Copyright Notice in file all.lua
if _soft then
return 'a'
end
print "testing large tables"
local debug = require"debug"
local lim = 2^18 + 1000
local prog = { "local y = {0" }
for i = 1, lim do prog[#prog + 1] = i end
prog[#prog + 1] = "}\n"
prog[#prog + 1] = "X = y\n"
prog[#prog + 1] = ("assert(X[%d] == %d)"):format(lim - 1, lim - 2)
prog[#prog + 1] = "return 0"
prog = table.concat(prog, ";")
local env = {string = string, assert = assert}
local f = assert(load(prog, nil, nil, env))
f()
assert(env.X[lim] == lim - 1 and env.X[lim + 1] == lim)
for k in pairs(env) do env[k] = undef end
-- yields during accesses larger than K (in RK)
setmetatable(env, {
__index = function (t, n) coroutine.yield('g'); return _G[n] end,
__newindex = function (t, n, v) coroutine.yield('s'); _G[n] = v end,
})
X = nil
local co = coroutine.wrap(f)
assert(co() == 's')
assert(co() == 'g')
assert(co() == 'g')
assert(co() == 0)
assert(X[lim] == lim - 1 and X[lim + 1] == lim)
-- errors in accesses larger than K (in RK)
getmetatable(env).__index = function () end
getmetatable(env).__newindex = function () end
local e, m = pcall(f)
assert(not e and m:find("global 'X'"))
-- errors in metamethods
getmetatable(env).__newindex = function () error("hi") end
local e, m = xpcall(f, debug.traceback)
assert(not e and m:find("'newindex'"))
f, X = nil
coroutine.yield'b'
if 2^32 == 0 then -- (small integers) {
print "testing string length overflow"
local repstrings = 192 -- number of strings to be concatenated
local ssize = math.ceil(2.0^32 / repstrings) + 1 -- size of each string
assert(repstrings * ssize > 2.0^32) -- it should be larger than maximum size
local longs = string.rep("\0", ssize) -- create one long string
-- create function to concatenate 'repstrings' copies of its argument
local rep = assert(load(
"local a = ...; return " .. string.rep("a", repstrings, "..")))
local a, b = pcall(rep, longs) -- call that function
-- it should fail without creating string (result would be too large)
assert(not a and string.find(b, "overflow"))
end -- }
print'OK'
return 'a'