HOOK_RET bug?

["Jan-Eric Duden" <jeduden@...>]

Hi!

 

I guess, I found a bug again in the debugging interface:

Consider this piece of code:

 

k=0;
function secondcall()  
   return 2;                //LUA_HOOKRET *is* called for this line
end

 

function firstcall()
   return secondcall(); //LUA_HOOKRET is *not* called for this line
end

 

k=firstcall();
k=0;
k=1;

 

the bug seems to be in lvm.c,v 1.284 2003/04/03 13:35:34, line 662:

 

When the first part of the if-statement is called, then the LUA_HOOKRET hook is omitted.

 

/* previous function was running `here'? */

if (!(ci->state & CI_CALLING)) {
          lua_assert((ci->state & CI_C) || ci->u.l.pc != &pc);
          return ra;  /* no: return */
        }

else

{ /* yes: continue its execution */

    ...

}

 

Does anyone have suggestions for a fix?

The else-branch calls a function luaD_poscall to process the debug return hooks.

Is that the appropriate function that needs to be called in order to fix the bug?

 

Jan-Eric Duden