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-rw-r--r--gcc/ChangeLog4
-rw-r--r--gcc/sched-vis.c6
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dd1b4b4..dfea1b6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,4 +1,8 @@
2012-11-12 Steven Bosscher <steven@gcc.gnu.org>
+
+ * sched-vis.c (print_pattern): Handle NULL patterns.
+
+2012-11-12 Steven Bosscher <steven@gcc.gnu.org>
Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/51447
diff --git a/gcc/sched-vis.c b/gcc/sched-vis.c
index 280b33a..d4f5e95 100644
--- a/gcc/sched-vis.c
+++ b/gcc/sched-vis.c
@@ -568,6 +568,12 @@ print_pattern (char *buf, const_rtx x, int verbose)
{
char t1[BUF_LEN], t2[BUF_LEN], t3[BUF_LEN];
+ if (! x)
+ {
+ sprintf (buf, "(nil)");
+ return;
+ }
+
switch (GET_CODE (x))
{
case SET: