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Hi Thanks Roberto & Markus for the replies. As a quick workaround for the Swig issue I put an ugly macro into lauxlib.h #define lua_pushvalue(L,LUA_GLOBALSINDEX) lua_getglobal(L,"_G") This looks a valid fix to me, that meant I can now compile and link without errors. Unfortunately, things are still a bit of a crashfest. I found one issue, but still suffering a crash after I fixed it. Issue 1) I am running this 5.2 build on an oddball OS that hasnt got a realloc() function, so I had to write my own a while back. This new 5.2 showed up a weakness in my realloc implementation. 5.2 does something rather odd though that presumably 5.1 didnt. The first time a memory alloc occurs static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) The calling params are: ptr=NULL, but osize=8 nsize=368 The oldsize param doesnt seem to really mean the old memory allocation block size any longer, its seems to be a LUA enum, 5,6,7,8 etc. I had used osize to decided if a memcpy was needed and was now causing a crash with 5.2. This was trivial to fix such that if ptr==NULL then it doesnt try and use osize now. The Lua code is kind of confusing here though, why an enum ? Issue 2) I still get a crash in the Swig auto generated code SWIGEXPORT int SWIG_init(lua_State* L) { int i; /* start with global table */ lua_pushvalue(L,LUA_GLOBALSINDEX); /* SWIG's internal initalisation */ SWIG_InitializeModule((void*)L); SWIG_PropagateClientData(); /* add a global fn */ SWIG_Lua_add_function(L,"swig_type",SWIG_Lua_type); <-- !! Crashes here !! where the swig add function is defined as #define SWIG_Lua_add_function(L,n,f) \ (lua_pushstring(L, n), \ lua_pushcfunction(L, f), \ lua_rawset(L,-3)) switching on the api check function seems to indicate its not finding the globals table on the stack Assertion failed: (((((t))->u.i.tt__) == (0x7FF7A500 | (((5) | (1 << 6)))))) && "table expected", file c:\lapi.c, line 781 which I guess puts doubt into the earlier LUA_GLOBALSINDEX fix is actually working ? not sure how to make progress on this issue at the moment, any thoughts gratefully received Regards Geoff > From: willhelm.schmid@googlemail.com > To: lua-l@lists.lua.org > Subject: Re: Lua 5.2 & SWIG compatibility problem > > Try this: > > -- Temporary swig hack. Convert from Lua 5.1 to 5.2 > local function fixSwig(data) > data="">> data="">> return data > end > |