*** python2.5-2.5/Modules/pyexpat.c	2006-07-06 07:13:22.000000000 +0200
--- pyexpat.c_achim	2007-09-08 01:01:38.000000000 +0200
***************
*** 1611,1620 ****
--- 1611,1688 ----
              free(self->buffer);
              self->buffer = NULL;
          }
          return 0;
      }
+     /* added code */
+     if (strcmp(name, "buffer_size") == 0) {
+       long new_buffer_size;
+       if (PyInt_Check(v)==0) {
+ 	PyErr_SetString(PyExc_TypeError, "buffer_size must be an integer");
+ 	return -1;
+       }
+       new_buffer_size=PyInt_AS_LONG(v);
+       if (new_buffer_size<=0) {
+ 	PyErr_SetString(PyExc_ValueError, "buffer_size must be greater zero");
+ 	return -1;
+       }
+       /* trivial case */
+       if (new_buffer_size==self->buffer_size) return 0;
+ 
+       /* check maximum */
+       if (new_buffer_size>INT_MAX) {
+ 	PyErr_SetString(PyExc_ValueError, "buffer_size must not be greater than INT_MAX");
+ 	return -1;	
+       }
+       if (self->buffer!=NULL) {
+ 	/* there is a buffer */
+ 	if (self->buffer_used==0) {
+ 	  /* normal case, you can guess required size before buffer is filled */
+ 	  free(self->buffer);
+ 	  self->buffer = malloc(new_buffer_size);
+ 	  if (self->buffer == NULL) {
+ 	    PyErr_NoMemory();
+ 	    return -1;
+ 	  }	  
+ 	}
+ 	else {
+ 	  /* have to handle existing data, trying to avoid immediate flush */
+ 	  if (new_buffer_size >= self->buffer_used) {
+ 	    /* try a realloc (assume there is no trailing zero) */
+ 	    void* new_buffer=realloc((void*)self->buffer, new_buffer_size);
+ 	    if (new_buffer!=NULL) {
+ 	      self->buffer=new_buffer;
+ 	    }
+ 	    else {
+ 	      /* realloc failed, do a flush and take new buffer */
+ 	      flush_character_buffer(self);
+ 	      free(self->buffer);
+ 	      self->buffer = malloc(new_buffer_size);
+ 	      if (self->buffer == NULL) {
+ 		PyErr_NoMemory();
+ 		return -1;
+ 	      }
+ 	    }
+ 	  }
+ 	  else {
+ 	    /* simplea aproach: do a flush and take new buffer */
+ 	    flush_character_buffer(self);
+ 	    free(self->buffer);
+ 	    self->buffer = malloc(new_buffer_size);
+ 	    if (self->buffer == NULL) {
+ 	      PyErr_NoMemory();
+ 		return -1;
+ 	    }
+ 	  }
+ 	  
+ 	} /* existing data */
+ 
+       } /* buffer already allocated */
+       self->buffer_size=new_buffer_size;
+       return 0;
+     }
+     /* end added code */
      if (strcmp(name, "namespace_prefixes") == 0) {
          if (PyObject_IsTrue(v))
              self->ns_prefixes = 1;
          else
              self->ns_prefixes = 0;