#14839: lua-5.4.3
-------------------------+-----------------------
Reporter: renodr | Owner: renodr
Type: enhancement | Status: assigned
Priority: normal | Milestone: 10.2
Component: BOOK | Version: SVN
Severity: normal | Resolution:
Keywords: |
-------------------------+-----------------------
Comment (by renodr):
The known bugs for lua-5.4.2 that were fixed in lua-5.4.3
{{{
'table.sort' does not work for partial orders.
reported by Egor Skriptunof on 04 Jan 2021. existed since 5.3.
Example:
nan = 0/0
t = {nan, nan, 20, 10}
table.sort(t)
print(table.concat(t, ", "))
--> -nan, 20, -nan, 10
Patch: The manual is deceptive. It is necessary but not sufficient for the
sort function to define a partial order.
Parameter 'what' of 'debug.getinfo' cannot start with '>'.
reported by Xmilia Hermit on 01 Feb 2021. existed since 5.1.
Example:
-- with Lua compiled with option LUA_USE_APICHECK
debug.getinfo(0, ">")
Patch:
ldblib.c:
@@ -152,6 +152,7 @@ static int db_getinfo (lua_State *L) {
lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg+2, "flnSrtu");
checkstack(L, L1, 3);
+ luaL_argcheck(L, options[0] != '>', arg + 2, "invalid option '>'");
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
options = lua_pushfstring(L, ">%s", options); /* add '>' to
'options' */
lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */
Error message in 'string.concat' uses wrong format.
reported by no-n and Andrew Gierth on 14 Feb 2021. existed since 5.3.0.
Example:
-- the following call gives an error message with a wrong index
table.concat({}, "", math.maxinteger, math.maxinteger)
Patch:
ltablib.c:
@@ -146,7 +146,7 @@ static int tmove (lua_State *L) {
static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) {
lua_geti(L, 1, i);
if (!lua_isstring(L, -1))
- luaL_error(L, "invalid value (%s) at index %d in table for 'concat'",
+ luaL_error(L, "invalid value (%s) at index %I in table for 'concat'",
luaL_typename(L, -1), i);
luaL_addvalue(b);
}
'isinstack' wrongly assumes we can work around an undefined behavior.
reported by Yongheng Chen on 21 Feb 2021. existed since 5.3.0.
Example: This bug probably will not cause a failure in flat-memory
architectures. We can force it by compiling Lua with the gcc option
'-fsanitize=pointer-subtract' (plus what it needs to work) and running the
following code:
print(setmetatable({}, {__index = 4}).x)
}}}
[https://www.lua.org/work/diffs-lua-5.4.2-lua-5.4.3.html] contains a full
diff
[https://www.lua.org/bugs.html#5.4.2] contains bug fixes
[https://www.lua.org/work/] is the Lua work area, where more information
can be found
This should be a smooth update.
--
Ticket URL: <http://wiki.linuxfromscratch.org/blfs/ticket/14839#comment:2>
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