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Don't allow registry to be set to readonly #184

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merged 4 commits into from
Nov 8, 2021
Merged

Don't allow registry to be set to readonly #184

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ddc6ae7
Don't allow registry to be set to readonly
LoganDark Nov 8, 2021
f76b693
t == hvalue(registry(L))
LoganDark Nov 8, 2021
0fbc918
api_check
LoganDark Nov 8, 2021
ec59bf9
remove ldebug include
LoganDark Nov 8, 2021
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3 changes: 3 additions & 0 deletions VM/src/lapi.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
#include "ldo.h"
#include "lvm.h"
#include "lnumutils.h"
#include "ldebug.h"
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#include <string.h>

Expand Down Expand Up @@ -703,6 +704,8 @@ void lua_setreadonly(lua_State* L, int objindex, bool value)
const TValue* o = index2adr(L, objindex);
api_check(L, ttistable(o));
Table* t = hvalue(o);
if (value && obj2gco(t) == gcvalue(registry(L)))
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luaG_runerror(L, "Attempt to set the registry to readonly");
t->readonly = value;
return;
}
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