Roberto Ierusalimschy 34affe7a63 Fixed bug: 'luaD_callnoyield' called twice in a row ...

In luaD_callnoyield, when there is a possible stack overflow, it
zeros the number of CallInfos to force a check when calling the
function. However, if the "function" is not a function, the code will
raise an error before checking the stack. Then, the error handling calls
luaD_callnoyield again and nCcalls is decremented again, crossing the
stack redzone without raising an error. (This loop can only happens
once, because the error handler must be a function.  But once is enough
to cross the redzone.)

2020-07-17 14:54:26 -03:00

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