PR c/43893

[pf3gnuchains/gcc-fork.git] / gcc / cfgloopanal.c

diff --git a/gcc/cfgloopanal.c b/gcc/cfgloopanal.c
index 33aff6d..129ec25 100644 (file)
--- a/gcc/cfgloopanal.c
+++ b/gcc/cfgloopanal.c
@@ -175,12 +175,14 @@ num_loop_insns (const struct loop *loop)
   for (i = 0; i < loop->num_nodes; i++)
     {
       bb = bbs[i];
-      ninsns++;
       FOR_BB_INSNS (bb, insn)
        if (NONDEBUG_INSN_P (insn))
          ninsns++;
     }
-  free(bbs);
+  free (bbs);
+
+  if (!ninsns)
+    ninsns = 1;        /* To avoid division by zero.  */
 
   return ninsns;
 }
@@ -209,7 +211,7 @@ average_num_loop_insns (const struct loop *loop)
              : (bb->frequency * BB_FREQ_MAX) / loop->header->frequency;
       ninsns += binsns * ratio;
     }
-  free(bbs);
+  free (bbs);
 
   ninsns /= BB_FREQ_MAX;
   if (!ninsns)