Re: Faults on Raspberry Pi and PPC Linux with Lua 5.4.0 RC 5 in lobjects.c/str2num

[Alexander Walz <agena.info@...>]

Adrew,

exactly that: trying to cast a negative integral.

I will now remain silent.

Sorry,

Alex

Andrew Gierth wrote:
> > > > > > "Alexander" == Alexander Walz <agena.info@t-online.de> writes:
>   Alexander> Hi,
>
>   Alexander> when merging Lua 5.4 code into a Lua 5.1 fork, I noticed
>   Alexander> problems on my Raspberry Pi 4 and also on Power PC with
>   Alexander> lobjects.c/str2num returning 2^32 with integral arguments
>   Alexander> that are within its range, when reading values from files.
>
> What values, and in what way did you modify l_str2int? And what types
> are you using for lua_Integer, lua_Unsigned etc? It all works fine for
> me on my ARM systems.
>
> (A common error that shows up on ARM platforms is if you try and cast a
> negative float value to an unsigned integer; this is undefined in C.)