Re: A strange error found (x^y == x)

[Long Z <zandzx02cn@...>]

When a string I typed contained '^', the Serial-Tool(Serial for Mac) ONLY sent the characters before '^'.

When I typed "2 \^ 2", the result was 4.0.

So, it is NOT a bug/err of lua.

Long Z <zandzx02cn@gmail.com> 于2020年7月13日周一 下午9:59写道：

Checked

When I typed "2 \^ 2", the result was 4.0 ...

Long Z <zandzx02cn@gmail.com> 于2020年7月13日周一 下午9:51写道：

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.

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