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Your problems should be due to having two separate copies of Lua core in the system. Try to make sure lua the command line executable is really dynamically linked to the lua shared library that extension modules use.

There may also be other ways to guarantee this singularity of the Lua core. If you have two cores and you do multiple threads, OS X gets confused like you showed.

For users of Lua via the fink distribution, make sure your package is >= 5.1.1-14. That has the necessary changes. Unstable has a recent one but stable still lags behind in 5.1.1-4 or so. Lanes does not work fine with that.

- Asko

Stefan Marr kirjoitti 5.10.2009 kello 14:03:

Hi Asko,
Hi list:

I tried to experiment with LuaLanes, but have some problems on my Snow Leopard installation.

Every time I try to run one of the test I get an malloc error like this:

lanes-2.0.3$ LUA_CPATH=./src/?.so LUA_PATH="src/?.lua;./tests/?.lua" lua tests/recursive.lua
depth: 0 1 2 3 4 5 6 7 8 9 10 11
lua(61739,0x7fff71085be0) malloc: *** error for object 0x1000ad1a0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

I tried to use luarocks from MacPorts to install lanes, but there is no rock spec. for the latest version, and for the 2.0 version, the download is gone, so it just failed installing.

Furthermore, I followed the hints in the README to compile Lua with LUA_USE_DLOPEN and LUA_USE_POSIX as well as using a dylib for the core and library code, as described.
However, I am still ending up with the error given above.

Any thoughts how this could be fixed?

Many thanks and best regards

BTW: On an Ubuntu, it works fine...

Stefan Marr
Software Languages Lab
Former Programming Technology Lab
Vrije Universiteit Brussel
Pleinlaan 2 / B-1050 Brussels / Belgium
Phone: +32 2 629 3956
Fax:   +32 2 629 3525