* integrate.c (mark_hard_reg_initial_vals): Check for NULL.

From-SVN: r43487

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f5f601be078cbc92c712a05c1639052073ff6051..fe47e2f639c5f385a2a3288ea898e7ab422eec3f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
 2001-06-21  DJ Delorie  <dj@redhat.com>
 
+       * integrate.c (mark_hard_reg_initial_vals): Check for NULL.
+       
        * integrate.c (ggc.h): Include.
        (initial_value_pair, initial_value_struct,
        setup_initial_hard_reg_value_integration): Add prototypes.

diff --git a/gcc/integrate.c b/gcc/integrate.c
index 7cc6002520cb6a0531727dbf092b9340e49587c8..88b8c9f1f88a1dd0e495598d416b3ada5a3bb969 100644 (file)
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -2977,6 +2977,9 @@ mark_hard_reg_initial_vals (fun)
   struct initial_value_struct *ivs = fun->hard_reg_initial_vals;
   int i;
 
+  if (ivs == 0)
+    return;
+
   for (i = 0; i < ivs->num_entries; i ++)
     {
       ggc_mark_rtx (ivs->entries[i].hard_reg);