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1--- a/src/lparser.c 2+++ b/src/lparser.c 3@@ -301,6 +301,7 @@ 4 expdesc key; 5 singlevaraux(fs, ls->envn, var, 1); /* get environment variable */ 6 lua_assert(var->k == VLOCAL || var->k == VUPVAL); 7+ luaK_exp2anyregup(fs, var); /* but could be a constant */ 8 codestring(ls, &key, varname); /* key is variable name */ 9 luaK_indexed(fs, var, &key); /* env[varname] */ 10 }