Re: LPEG on Solaris
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- Subject: Re: LPEG on Solaris
- From: Roberto Ierusalimschy <roberto@...>
- Date: Thu, 2 Jun 2016 16:49:13 -0300
> On illumos and similar systems...
>
> #include <stdio.h>
> #include <stdint.h>
>
> int main() {
> char foo[32];
> printf("%llx\n", (uintptr_t)foo);
> return 0;
> }
>
> will result in a perfectly reasonable pointer of:
>
> fffffd7fffdffb80
>
> this is what makes it problematic.
Either I don't understand what you are saying or you did not understand
what I said.
It does not matter the value of '&foo'. As long as it differ by at
most 2^30 from some base stack address (easily saved on start up),
all LuaJIT has to store is that 2^30 offset plus one bit to tell
that the address refers to the stack (and therefore must be added
to that base stack address when queried).
-- Roberto