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Thank you, guys.It seems the Serial-Tool used by me send error string to the Lua-Interpreter.When a string I typed contained '^', the Serial-Tool just sent the characters before '^'.So, it is NOT a bug/err of lua.Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> 于2020年7月13日周一 下午8:45写道：> "2^2" have NOT went into OP_TAILCALL, and also OP_POW.
> So strange...
"2^2" is computed at compile time because it's a constant _expression_.
"return 2^2" gives this bytecode:
VARARGPREP 0
LOADF 0 4
RETURN 0 2 1 ; 1 out
RETURN 0 1 1 ; 0 out
which matches your report except that you had LOADI instead of LOADF.
--龙的传人