From 3eb63272c5bb09fd96de95ed4b357f97803a39e4 Mon Sep 17 00:00:00 2001
From: Richard Biener <rguenther@suse.de>
Date: Tue, 6 Nov 2018 15:46:42 +0000
Subject: [PATCH] re PR tree-optimization/86850 (ubsan: runtime error: member
 call on null pointer)

2018-11-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/86850
	* vec.h (vec<T, va_heap, vl_ptr>::splice): Check src.length ()
	instead of src.m_vec.

From-SVN: r265848
---
 gcc/ChangeLog | 6 ++++++
 gcc/vec.h     | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 56809ca..6807a68 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-11-06  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/86850
+	* vec.h (vec<T, va_heap, vl_ptr>::splice): Check src.length ()
+	instead of src.m_vec.
+ 
 2018-11-06  Jan Hubicka  <jh@suse.cz>
 
 	* tree.c (fld_simplified_type_name): Break out form ...
diff --git a/gcc/vec.h b/gcc/vec.h
index f8c0397..407269c5 100644
--- a/gcc/vec.h
+++ b/gcc/vec.h
@@ -1688,7 +1688,7 @@ template<typename T>
 inline void
 vec<T, va_heap, vl_ptr>::splice (const vec<T, va_heap, vl_ptr> &src)
 {
-  if (src.m_vec)
+  if (src.length ())
     m_vec->splice (*(src.m_vec));
 }
 
-- 
2.7.4