fix bug in copy_string_to_graph, adjust n_free_words when copying pointers in...

fix bug in copy_string_to_graph, adjust n_free_words when copying pointers in an array (memory is allocated on the stack AND the heap)

Libraries/graph_copy/copy_string_to_graph.c

@@ -184,6 +184,12 @@ Int *copy_string_to_graph (Int *string_p,void *begin_free_heap,void *end_free_he
 							if (elem_desc==0){
 								Int i;
 
+								n_free_words-=array_size;
+								if (n_free_words<0){
+									*last_heap_pa=heap_p+array_size+(stack_end-stack_begin);
+									return (Int*)((Int)string_p+1);
+								}
+								
 								stack_p-=array_size;
 								if (stack_p<stack_begin){
 									Int extra_words;
@@ -273,6 +279,12 @@ Int *copy_string_to_graph (Int *string_p,void *begin_free_heap,void *end_free_he
 									
 									array_size*=field_size;
 
+									n_free_words-=array_size;
+									if (n_free_words<0){
+										*last_heap_pa=heap_p+array_size+(stack_end-stack_begin);
+										return (Int*)((Int)string_p+1);
+									}
+
 									stack_p-=array_size;
 									if (stack_p<stack_begin){
 										Int extra_words;