> > In midas.c, ...
> >
> > 1) _net_send_buffer is not set to NULL when declared.
> 
> _net_send_buffer is a global variable. All global variables are automatically 
initialized to zero before the program 
> starts.
> 
> static char*x; // = NULL; is redundant
> char*y=realloc(x, 100);  // x is NULL, usage is correct
>

Ah,okay. I was not aware of this feature of global variables.

 
> > 2) cm_disconect_experiment() calls free(_net_send_buffer) but does not set 
its 
> > value to NULL.
> 
> My copy of midas.c (svn rev 5256) sets _net_send_buffer to NULL:
> 
>    if (_net_send_buffer_size > 0) { 
>       M_FREE(_net_send_buffer); 
>       _net_send_buffer_size = 0; 
>    } 
>  
> What version of midas do you have? (svn info .)
> 
> K.O.

I have version 5256 also (matches what you posted), but I only see 
_net_send_buffer_size being set to 0, not _net_send_buffer itself. In midas.h, 
M_FREE(x) only expands to free(x) if _MEM_DBG is not defined.