From: Jeff Law <law@redhat.com>
Date: Fri, 7 Jun 2002 18:00:44 +0000 (-0600)
Subject: sched-deps.c (free_deps): Avoid calling free_INSN_LIST_list on empty lists.
X-Git-Tag: releases/gcc-3.3.0~4498
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f28468203d0067182fb93773233af6c1ab07a15a;p=thirdparty%2Fgcc.git

sched-deps.c (free_deps): Avoid calling free_INSN_LIST_list on empty lists.

        * sched-deps.c (free_deps): Avoid calling free_INSN_LIST_list
        on empty lists.

From-SVN: r54347
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 72a1a180c774..40e955426d52 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2002-06-07  Jeffrey Law  <law@redhat.com>
+
+	* sched-deps.c (free_deps): Avoid calling free_INSN_LIST_list
+	on empty lists.
+
 2002-06-07  H.J. Lu  (hjl@gnu.org)
 
 	* configure.in: Add --enable-__cxa_atexit.
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index ec18f9d1973d..644f1bdbd1f6 100644
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -1508,9 +1508,12 @@ free_deps (deps)
   EXECUTE_IF_SET_IN_REG_SET (&deps->reg_last_in_use, 0, i,
     {
       struct deps_reg *reg_last = &deps->reg_last[i];
-      free_INSN_LIST_list (&reg_last->uses);
-      free_INSN_LIST_list (&reg_last->sets);
-      free_INSN_LIST_list (&reg_last->clobbers);
+      if (reg_last->uses)
+	free_INSN_LIST_list (&reg_last->uses);
+      if (reg_last->sets)
+	free_INSN_LIST_list (&reg_last->sets);
+      if (reg_last->clobbers)
+	free_INSN_LIST_list (&reg_last->clobbers);
     });
   CLEAR_REG_SET (&deps->reg_last_in_use);