From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 14 Jun 2018 10:55:00 +0000 (+0000)
Subject: 2018-06-14  Richard Biener  <rguenther@suse.de>
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=84d334f8d3c59ab1326712b8259065ee4fee76a6;p=thirdparty%2Fgcc.git

2018-06-14  Richard Biener  <rguenther@suse.de>

	PR ipa/86124
	* tree-ssa-struct-alias.c (create_variable_info_for): Handle
	NULL cgraph_node.

	* gcc.dg/pr86124.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@261587 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ceb0d665f689..bdd94933e1c8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-06-14  Richard Biener  <rguenther@suse.de>
+
+	PR ipa/86124
+	* tree-ssa-struct-alias.c (create_variable_info_for): Handle
+	NULL cgraph_node.
+
 2018-06-14  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 
 	* config/rtems.h (STDINT_LONG32): Define.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 32d158fbf436..1286073f51de 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-06-14  Richard Biener  <rguenther@suse.de>
+
+	PR ipa/86124
+	* gcc.dg/pr86124.c: New testcase.
+
 2018-06-13  Martin Sebor  <msebor@redhat.com>
 
 	PR tree-optimization/86114
diff --git a/gcc/testsuite/gcc.dg/pr86124.c b/gcc/testsuite/gcc.dg/pr86124.c
new file mode 100644
index 000000000000..218b48295f79
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr86124.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fipa-pta" } */
+
+extern void a (void);
+
+void b (void)
+{
+  void *c;
+  c = a;
+  *(char *)c = 1;
+}
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index 73e500bb616c..ac5d4bc93fe9 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -6120,7 +6120,8 @@ create_variable_info_for (tree decl, const char *name, bool add_id)
   cgraph_node *node;
   if (in_ipa_mode
       && TREE_CODE (decl) == FUNCTION_DECL
-      && (node = cgraph_node::get (decl))->ifunc_resolver)
+      && (node = cgraph_node::get (decl))
+      && node->ifunc_resolver)
     {
       varinfo_t fi = get_vi_for_tree (node->get_alias_target ()->decl);
       constraint_expr rhs