[Wxlua-users] Re: wxLua updated to lua 5.1, please test, NOTES for programmers

[Francesco M. <f18...@ya...>]

Hi,

John Labenski ha scritto:
> I came across what seemed to be a bug in the garbage collector in
> 5.0.2. In the printing sample  "virtual" functions are set for the
> wxLuaPrintout which get called instead of the c++ functions. However
> in the print preview if you changed the size of the preview a few
> times the functions you set (even if global, not local) would get
> garbage collected.
weird...

> Anyway, this prompted to me try 5.1 and so far the results are very
> good, this bug was fixed and it's MUCH FASTER! (yes using capitals is
> appropriate, it's pretty impressive)
very good news !


> It compiles and runs using the "Makefiles" in the src dir of the
> apps/XXX dirs. All the samples have been updated, but not thoroughly
> tested.
I've updated bakefiles but now, when I try to run wxluaedit I get a 
segmentation fault... (this with wx2.6.3 and with an up2date 
wxStedit...); other apps and samples I've tried work fine.


> -------------------------
> 
> Some notes on the changes for 5.1 that I've come across, there's more...
> 
> 1) lua 5.1 does not have an "include" dir so I faked it by copying the
> pertinent headers that we use into it.
if you want to keep the header files in lua/src/ folder it's fine for me 
as it's not a problem for bakefiles ;)


> 2) All the sources are in lua/src, even the lua and luac programs.
> Please see modules/luaINSTALL for the list of files for each.
> (Francesco, could you update the bakefiles? I don't think your *.c
> trick will work anymore)
I've updated the bakefiles using the list of source files provided in 
lua/INSTALL...

Francesco


> 3) DO NOT CALL luaopen_XXX (eg luaopen_io for the io.XXX table). IT
> WILL CRASH after some invalid reads. You have to open the libs a
> little differently, I'm just using the function "luaL_openlibs" in
> lua/src/linit.c which loads them all, but shows you how to do it
> individually.
> 
> 4) "for k, v in sometable do" is now "for k, v in pairs(sometable) do"
> 
> 5) table.getn and table.setn are gone, use the #sometable to get the
> count of the consecutive integer indexes in a table.
> 
> 6) math.mod -> math.fmod and string.gfind -> string.gmatch
> 
> etc, see bottom of
> http://www.lua.org/manual/5.1/manual.html
> 
> Regards,
>     John Labenski
> 
> 
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