From 4f6a5f07a0b8d3a90ec3c9bc93f5fb5c547f219a Mon Sep 17 00:00:00 2001
From: nathan <nathan@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 3 Jan 2018 16:01:31 +0000
Subject: [PATCH] [PR c++/83667] Fix tree_dump ICE

https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00148.html
	PR c++/83667
	* method.c (make_alias_for): Copy DECL_CONTEXT.

	PR c++/83667
	* g++.dg/ipa/pr83667.C: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256179 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/ChangeLog                   |  5 +++++
 gcc/cp/method.c                    |  2 +-
 gcc/testsuite/ChangeLog            |  5 +++++
 gcc/testsuite/g++.dg/ipa/pr83667.C | 23 +++++++++++++++++++++++
 4 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/g++.dg/ipa/pr83667.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 506684aeb47..4f8f8394273 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-03  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/83667
+	* method.c (make_alias_for): Copy DECL_CONTEXT.
+
 2018-01-03  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/83592
diff --git a/gcc/cp/method.c b/gcc/cp/method.c
index 6b080c04fa2..55c84f12399 100644
--- a/gcc/cp/method.c
+++ b/gcc/cp/method.c
@@ -206,7 +206,7 @@ make_alias_for (tree target, tree newid)
 			   TREE_CODE (target), newid, TREE_TYPE (target));
   DECL_LANG_SPECIFIC (alias) = DECL_LANG_SPECIFIC (target);
   cxx_dup_lang_specific_decl (alias);
-  DECL_CONTEXT (alias) = NULL;
+  DECL_CONTEXT (alias) = DECL_CONTEXT (target);
   TREE_READONLY (alias) = TREE_READONLY (target);
   TREE_THIS_VOLATILE (alias) = TREE_THIS_VOLATILE (target);
   TREE_PUBLIC (alias) = 0;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f389dea6971..e252ae0f080 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-03  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/83667
+	* g++.dg/ipa/pr83667.C: New.
+
 2018-01-03  Martin Liska  <mliska@suse.cz>
 
 	PR tree-optimization/83593
diff --git a/gcc/testsuite/g++.dg/ipa/pr83667.C b/gcc/testsuite/g++.dg/ipa/pr83667.C
new file mode 100644
index 00000000000..5fbfa8eb0e4
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ipa/pr83667.C
@@ -0,0 +1,23 @@
+/* { dg-options "-fdump-ipa-inline" } */
+// c++/83667 ICE dumping a static thunk
+
+struct a
+{
+  virtual ~a ();
+};
+
+struct b
+{
+  virtual void d (...);
+};
+
+struct c : a, b
+{
+  void d (...)
+  {
+  }
+};
+
+c c;
+
+// { dg-final { scan-ipa-dump "summary for void c::\\*.LTHUNK0" "inline" } }
-- 
2.11.4.GIT