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Feature #1330 ยป 0027-Apply-patch-6-for-lua-5.4.7.patch

Marko Lindqvist, 04/30/2025 08:28 PM

View differences:

dependencies/lua-5.4/Version.txt
(http://www.lua.org/ftp/lua-5.4.7.tar.gz)
Upstream bug fixes from https://www.lua.org/bugs.html applied:
2, 3, 5
2, 3, 5, 6
Upstream bug fixes not applicable to our tree:
1
dependencies/lua-5.4/src/ldo.c
setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */
break;
}
case LUA_ERRERR: {
setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling"));
break;
}
case LUA_OK: { /* special case only for closing upvalues */
setnilvalue(s2v(oldtop)); /* no error message */
break;
......
/* some space for error handling */
#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200)
/* raise an error while running the message handler */
l_noret luaD_errerr (lua_State *L) {
TString *msg = luaS_newliteral(L, "error in error handling");
setsvalue2s(L, L->top.p, msg);
L->top.p++; /* assume EXTRA_STACK */
luaD_throw(L, LUA_ERRERR);
}
/*
** Reallocate the stack to a new size, correcting all pointers into it.
** In ISO C, any pointer use after the pointer has been deallocated is
......
a stack error; cannot grow further than that. */
lua_assert(stacksize(L) == ERRORSTACKSIZE);
if (raiseerror)
luaD_throw(L, LUA_ERRERR); /* error inside message handler */
luaD_errerr(L); /* error inside message handler */
return 0; /* if not 'raiseerror', just signal it */
}
else if (n < LUAI_MAXSTACK) { /* avoids arithmetic overflows */
dependencies/lua-5.4/src/ldo.h
/* type of protected functions, to be ran by 'runprotected' */
typedef void (*Pfunc) (lua_State *L, void *ud);
LUAI_FUNC l_noret luaD_errerr (lua_State *L);
LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode);
dependencies/lua-5.4/src/lstate.c
if (getCcalls(L) == LUAI_MAXCCALLS)
luaG_runerror(L, "C stack overflow");
else if (getCcalls(L) >= (LUAI_MAXCCALLS / 10 * 11))
luaD_throw(L, LUA_ERRERR); /* error while handling stack error */
luaD_errerr(L); /* error while handling stack error */
}
    (1-1/1)