PANIC: unprotected error in call to Lua API (math)

Greetings,

While I have some experience writing lua scripts, I am new to implementing lua on a hardware platform. I am trying to implement lua on a Freescale Tower with a Kinetis K65 microcontroller. It has 2 MB of flash and 256 KB of SRAM on board. I have successfully built a project using IAR’s ARM IDE using one of the Tower’s simple demo projects as a launching point.

From main(), the project successfully runs the following line of code:

lua_State *L = luaL_newstate();

Next, the code attempts to open the lua libraries with this line of code:

luaL_openlibs(L);

It makes as far as the math library when the following is sent out the serial port from lua:

PANIC: unprotected error in call to Lua API (math)

I’ve stepped through the code and found that the error appears to occur in the following code:

void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {

void *newblock;

global_State *g = G(L);

size_t realosize = (block) ? osize : 0;

lua_assert((realosize == 0) == (block == NULL));

#if defined(HARDMEMTESTS)

if (nsize > realosize && g->gcrunning)

luaC_fullgc(L, 1); /* force a GC whenever possible */

#endif

newblock = (*g->frealloc)(g->ud, block, osize, nsize);

if (newblock == NULL && nsize > 0) {

api_check(L, nsize > realosize,

"realloc cannot fail when shrinking a block");

if (g->gcrunning) {

luaC_fullgc(L, 1); /* try to free some memory... */

newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */

}

if (newblock == NULL)

luaD_throw(L, LUA_ERRMEM);

}

lua_assert((nsize == 0) == (newblock == NULL));

g->GCdebt = (g->GCdebt + nsize) - realosize;

return newblock;

}

“newblock” is evidently set to NULL and the code calls luaD_throw() which deals with the error.

Anyone have any ideas to help resolve this?

Thanks,

Rick