(mem_insert): Set min_heap_address and max_heap_address

if they are not yet initialized.

diff --git a/src/alloc.c b/src/alloc.c
index 5cf22eb62e77ee318dcb96afb69b5eb90cead1cf..68b490f98b573456f0fffda7202427e98d78a163 100644 (file)
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -3615,9 +3615,9 @@ mem_insert (start, end, type)
 {
   struct mem_node *c, *parent, *x;
 
-  if (start < min_heap_address)
+  if (min_heap_address == NULL || start < min_heap_address)
     min_heap_address = start;
-  if (end > max_heap_address)
+  if (max_heap_address == NULL || end > max_heap_address)
     max_heap_address = end;
 
   /* See where in the tree a node for START belongs.  In this