From: Richard Biener <rguenther@suse.de>
Date: Fri, 27 Feb 2015 11:34:14 +0000 (+0000)
Subject: re PR tree-optimization/65193 (ICE: Segmentation fault with -g -flto)
X-Git-Tag: releases/gcc-4.8.5~240
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0186dd470abf457e1a86fe41fae2512aeb34a960;p=thirdparty%2Fgcc.git

re PR tree-optimization/65193 (ICE: Segmentation fault with -g -flto)

2015-02-27  Richard Biener  <rguenther@suse.de>

	PR lto/65193
	Backport from mainline
	2014-07-24  Jan Hubicka  <hubicka@ucw.cz>

	* lto-streamer-out.c (tree_is_indexable): Consider IMPORTED_DECL
	as non-indexable.

	* g++.dg/lto/pr65193_0.C: New testcase.

From-SVN: r221054
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d42bc827c97d..dce2ea05ae7b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2015-02-27  Richard Biener  <rguenther@suse.de>
+
+	PR lto/65193
+	Backport from mainline
+	2014-07-24  Jan Hubicka  <hubicka@ucw.cz>
+ 
+	* lto-streamer-out.c (tree_is_indexable): Consider IMPORTED_DECL
+	as non-indexable.
+
 2015-02-26  Peter Bergner  <bergner@vnet.ibm.com>
 
 	Backport from mainline
diff --git a/gcc/lto-streamer-out.c b/gcc/lto-streamer-out.c
index b205092f597b..c898c23d6f66 100644
--- a/gcc/lto-streamer-out.c
+++ b/gcc/lto-streamer-out.c
@@ -129,6 +129,9 @@ tree_is_indexable (tree t)
   else if (TREE_CODE (t) == VAR_DECL && decl_function_context (t)
 	   && !TREE_STATIC (t))
     return false;
+  /* IMPORTED_DECL is put into BLOCK and thus it never can be shared.  */
+  else if (TREE_CODE (t) == IMPORTED_DECL)
+    return false;
   /* Variably modified types need to be streamed alongside function
      bodies because they can refer to local entities.  Together with
      them we have to localize their members as well.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1b29c10d6fce..10317c10a3ef 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-02-27  Richard Biener  <rguenther@suse.de>
+
+	PR lto/65193
+	* g++.dg/lto/pr65193_0.C: New testcase.
+
 2015-02-26  Peter Bergner  <bergner@vnet.ibm.com>
 
 	Backport from mainline
diff --git a/gcc/testsuite/g++.dg/lto/pr65193_0.C b/gcc/testsuite/g++.dg/lto/pr65193_0.C
new file mode 100644
index 000000000000..d778fcabb7fc
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lto/pr65193_0.C
@@ -0,0 +1,71 @@
+/* { dg-lto-do link } */
+/* { dg-require-effective-target fpic } */
+/* { dg-lto-options {{-fPIC -r -nostdlib -flto -O2 -g}} } */
+
+void frexp (int, int *);
+namespace std
+{
+  int ldexp (int, int);
+  struct A
+    {
+    };
+  template <class T> T get_min_shift_value ();
+  template <class> struct min_shift_initializer
+    {
+      struct B
+	{
+	  B () { get_min_shift_value<long double> (); }
+	} static const b;
+      static void
+	  m_fn1 ()
+	    {
+	      b;
+	    }
+    };
+  template <class T>
+      const typename min_shift_initializer<T>::B min_shift_initializer<T>::b;
+  template <class T>
+      inline T
+      get_min_shift_value ()
+	{
+	  using std::ldexp;
+	  static T c = ldexp (0, 0);
+	  min_shift_initializer<T>::m_fn1;
+	}
+  template <class T, class Policy>
+      void
+      float_next_imp (T p1, Policy p2)
+	{
+	  using std::ldexp;
+	  int d;
+	  float_next (0, p2);
+	  frexp (p1, &d);
+	}
+  template <class T, class Policy>
+      int
+      float_next (const T &p1, Policy &p2)
+	{
+	  float_next_imp (p1, p2);
+	}
+  template <class T, class Policy> void float_prior_imp (T, Policy)
+    {
+      get_min_shift_value<T> ();
+    }
+  template <class T, class Policy> int float_prior (T, Policy)
+    {
+      float_prior_imp (static_cast<T> (0), 0);
+    }
+  template <class T, class U, class Policy>
+      void
+      nextafter (T p1, U p2, Policy p3)
+	{
+	  p2 ? float_next (0, p3) : float_prior (p1, 0);
+	}
+  long double e;
+  int f;
+  void
+      nextafter ()
+	{
+	  nextafter (e, f, A ());
+	}
+}