Bug: Lua can generate wrong code when _ENV is <const>

lua · Feb 15, 2022 · 1f3c6f4 · 1f3c6f4
1 parent 25b143d
commit 1f3c6f4
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Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/lparser.c b/lparser.c
@@ -468,6  468,7 @@ static void singlevar (LexState *ls, expdesc *var) {
     expdesc key;
     singlevaraux(fs, ls->envn, var, 1);  /* get environment variable */
     lua_assert(var->k != VVOID);  /* this one must exist */
     luaK_exp2anyregup(fs, var);  /* but could be a constant */
     codestring(&key, varname);  /* key is variable name */
     luaK_indexed(fs, var, &key);  /* env[varname] */
   }

diff --git a/testes/attrib.lua b/testes/attrib.lua
@@ -434,6  434,16 @@ a.aVeryLongName012345678901234567890123456789012345678901234567890123456789 ==
 10)
 
 
 do
   -- _ENV constant
   local function foo ()
     local _ENV <const> = 11
     X = "hi"
   end
   local st, msg = pcall(foo)
   assert(not st and string.find(msg, "number"))
 end
 
 
 -- test of large float/integer indices