From 67124cb62dd566664aa53183821957fa97b27e54 Mon Sep 17 00:00:00 2001
From: Eric Botcazou <ebotcazou@adacore.com>
Date: Thu, 8 Nov 2018 14:57:47 +0000
Subject: [PATCH] re PR middle-end/87916 (ICE in dwarf2out_abstract_function,
 at dwarf2out.c:22479 since r264943)

	PR middle-end/87916
	* cgraphclones.c (duplicate_thunk_for_node): Also set DECL_IGNORED_P.

From-SVN: r265916
---
 gcc/ChangeLog                        |  5 ++++
 gcc/cgraphclones.c                   |  4 ++++
 gcc/testsuite/ChangeLog              |  4 ++++
 gcc/testsuite/g++.dg/other/pr87916.C | 45 ++++++++++++++++++++++++++++++++++++
 4 files changed, 58 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/other/pr87916.C

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 46efe5d..c83df0b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-11-08  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR middle-end/87916
+	* cgraphclones.c (duplicate_thunk_for_node): Also set DECL_IGNORED_P.
+
 2018-11-08  David Malcolm  <dmalcolm@redhat.com>
 
 	* cgraph.c: Include "selftest.h".
diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
index e17959c..0fbc7a9 100644
--- a/gcc/cgraphclones.c
+++ b/gcc/cgraphclones.c
@@ -321,6 +321,10 @@ duplicate_thunk_for_node (cgraph_node *thunk, cgraph_node *node)
 						       "artificial_thunk");
   SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl));
 
+  /* We need to force DECL_IGNORED_P because the new thunk is created after
+     early debug was run.  */
+  DECL_IGNORED_P (new_decl) = 1;
+
   new_thunk = cgraph_node::create (new_decl);
   set_new_clone_decl_and_node_flags (new_thunk);
   new_thunk->definition = true;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f6c36f3..63019e1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2018-11-08  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* g++.dg/other/pr87916.C: New test.
+
 2018-11-08  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/87929
diff --git a/gcc/testsuite/g++.dg/other/pr87916.C b/gcc/testsuite/g++.dg/other/pr87916.C
new file mode 100644
index 0000000..5c69478
--- /dev/null
+++ b/gcc/testsuite/g++.dg/other/pr87916.C
@@ -0,0 +1,45 @@
+// PR middle-end/87916
+// Testcase by Martin Liška <marxin@gcc.gnu.org>
+
+// { dg-do compile }
+// { dg-options "-O2 -g" }
+// { dg-additional-options "-fPIC" { target fpic } }
+
+struct a {
+  virtual ~a();
+};
+template <typename b> class c {
+public:
+  class d {
+  public:
+    d(c);
+    b *operator->();
+  };
+};
+int e, f;
+class g {
+public:
+  class h {
+  public:
+    virtual void j(g &, int &, bool) = 0;
+  };
+  c<h> k();
+  int *l();
+  int *m();
+};
+int *g::l() try {
+  for (c<h>::d i(k());;)
+    i->j(*this, e, true);
+} catch (int) {
+  return 0;
+}
+int *g::m() try {
+  for (c<h>::d i(k());;)
+    i->j(*this, f, false);
+} catch (int) {
+  return 0;
+}
+struct n : a, g::h {
+  void o();
+  void j(g &, int &, bool) { o(); }
+};
-- 
2.7.4