From: dmalcolm <dmalcolm@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 20 Aug 2014 01:54:35 +0000 (+0000)
Subject: Fix issue with NULL as_a in duplicate_insn_chain
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=502fc714b05f99a88493fa64e74dc215597f7594;p=thirdparty%2Fgcc.git

Fix issue with NULL as_a in duplicate_insn_chain

2014-08-20  David Malcolm  <dmalcolm@redhat.com>

	* cfgrtl.c (duplicate_insn_chain): Convert the checked cast on
	"insn" from an as_a to a safe_as_a, for the case when "insn" is
	NULL.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@214207 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c1132d4628a1..e1b655f1e5de 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-08-20  David Malcolm  <dmalcolm@redhat.com>
+
+	* cfgrtl.c (duplicate_insn_chain): Convert the checked cast on
+	"insn" from an as_a to a safe_as_a, for the case when "insn" is
+	NULL.
+
 2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
 	PR preprocessor/51303
diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c
index 9c115ba03ceb..fd94a03eed0e 100644
--- a/gcc/cfgrtl.c
+++ b/gcc/cfgrtl.c
@@ -4166,7 +4166,7 @@ duplicate_insn_chain (rtx from, rtx to)
     }
   insn = NEXT_INSN (last);
   delete_insn (last);
-  return as_a <rtx_insn *> (insn);
+  return safe_as_a <rtx_insn *> (insn);
 }
 
 /* Create a duplicate of the basic block BB.  */