Re: problem with string.format %d and very large integers

[KHMan <keinhong@...>]

On 7/29/2011 3:22 PM, Lorenzo Donati wrote:
> On 27/07/2011 23.10, Luiz Henrique de Figueiredo wrote:
> > > > =big
> > > 2500000000
> > > > =string.format('%d', big)
> > > -2147483648
> >
> > This works fine in 5.2:
> >
> > Lua 5.2.0 Copyright (C) 1994-2011 Lua.org, PUC-Rio
> > > big=2500000000
> > > =string.format('%d', big)
> > 2500000000
> Well, now I'm really puzzled. I tested again:
> x = 2^31
> print( ("%.0f %d"):format(x,x) )
>
> on 5.2.0-alpha and all the betas (rc1 through rc7).
>
> and I keep getting the same results:
>
> --> 2147483648 -2147483648
>
> Since the issue should have been fixed in 5.2, either I'm doing
> something really silly or my toolchain has something wrong. Could
> it be that msvcrt.dll has some issue that mingw cannot work around?
>
> Is there someone else that gets the same results on WinXP (32bit)
> with (TDM) mingw?

WinXP, MinGW gcc 4.5.2 (TDM)

In luaconf.h, LUA_WIN does not define LUA_USE_LONGLONG. So in 
lstrlib.c, LUA_INTFRM uses 'l'/long instead of 'll'/long long.

IIRC, 'll' does not work for msvcrt.dll.

Behaviour is the same for official MinGW gcc 4.5.2.

Would be nice to have proper behaviour on MinGW...

--
Cheers,
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia