Fix build with libc++ by importing r178240.

Submitted by:	tijl (via commit to devel/llvm)

2 files changed, 87 insertions, 1 deletions

diff --git a/devel/llvm32/Makefile b/devel/llvm32/Makefile
index 46c681f76c52..ddff1ae159e4 100644
--- a/devel/llvm32/Makefile
+++ b/devel/llvm32/Makefile
@@ -2,7 +2,7 @@
 
 PORTNAME=	llvm
 PORTVERSION=	3.2
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel lang
 MASTER_SITES=	http://llvm.org/releases/${PORTVERSION}/
 DISTNAME=	${PORTNAME}-${PORTVERSION}.src
diff --git a/devel/llvm32/files/patch-svn-r178240 b/devel/llvm32/files/patch-svn-r178240
new file mode 100644
index 000000000000..d79cf9a6ad68
--- /dev/null
+++ b/devel/llvm32/files/patch-svn-r178240
@@ -0,0 +1,86 @@
+$FreeBSD$
+------------------------------------------------------------------------
+r178240 | hhinnant | 2013-03-28 15:47:50 +0000 (Thu, 28 Mar 2013) | 17 lines
+
+Seciton 24.2.2 of the C++ standard, [iterator.iterators], Table 106
+requires that the return type of *r for all iterators r be reference,
+where reference is defined in [iterator.requirements.general]/p11 as
+iterator_traits<X>::reference, and X is the type of r.
+
+But in CFG.h, the dereference operator of PredIterator and SuccIterator
+return pointer, not reference.
+
+Furthermore the nested type reference is value_type&, which is not the
+type returned from operator*().
+
+This patch simply makes the iterator::reference type value_type*, which
+is what the operator*() returns, and then re-lables the return type as
+reference.
+
+From a functionality point of view, the only difference is that the
+nested reference type is now value_type* instead of value_type&.
+------------------------------------------------------------------------
+Index: include/llvm/Support/CFG.h
+===================================================================
+--- include/llvm/Support/CFG.h	(revision 178239)
++++ include/llvm/Support/CFG.h	(revision 178240)
+@@ -27,8 +27,9 @@
+ 
+ template <class Ptr, class USE_iterator> // Predecessor Iterator
+ class PredIterator : public std::iterator<std::forward_iterator_tag,
+-                                          Ptr, ptrdiff_t> {
+-  typedef std::iterator<std::forward_iterator_tag, Ptr, ptrdiff_t> super;
++                                          Ptr, ptrdiff_t, Ptr*, Ptr*> {
++  typedef std::iterator<std::forward_iterator_tag, Ptr, ptrdiff_t, Ptr*,
++                                                                    Ptr*> super;
+   typedef PredIterator<Ptr, USE_iterator> Self;
+   USE_iterator It;
+ 
+@@ -40,6 +41,7 @@
+ 
+ public:
+   typedef typename super::pointer pointer;
++  typedef typename super::reference reference;
+ 
+   PredIterator() {}
+   explicit inline PredIterator(Ptr *bb) : It(bb->use_begin()) {
+@@ -50,7 +52,7 @@
+   inline bool operator==(const Self& x) const { return It == x.It; }
+   inline bool operator!=(const Self& x) const { return !operator==(x); }
+ 
+-  inline pointer operator*() const {
++  inline reference operator*() const {
+     assert(!It.atEnd() && "pred_iterator out of range!");
+     return cast<TerminatorInst>(*It)->getParent();
+   }
+@@ -100,10 +102,11 @@
+ 
+ template <class Term_, class BB_>           // Successor Iterator
+ class SuccIterator : public std::iterator<std::bidirectional_iterator_tag,
+-                                          BB_, ptrdiff_t> {
++                                          BB_, ptrdiff_t, BB_*, BB_*> {
+   const Term_ Term;
+   unsigned idx;
+-  typedef std::iterator<std::bidirectional_iterator_tag, BB_, ptrdiff_t> super;
++  typedef std::iterator<std::bidirectional_iterator_tag, BB_, ptrdiff_t, BB_*,
++                                                                    BB_*> super;
+   typedef SuccIterator<Term_, BB_> Self;
+ 
+   inline bool index_is_valid(int idx) {
+@@ -112,6 +115,7 @@
+ 
+ public:
+   typedef typename super::pointer pointer;
++  typedef typename super::reference reference;
+   // TODO: This can be random access iterator, only operator[] missing.
+ 
+   explicit inline SuccIterator(Term_ T) : Term(T), idx(0) {// begin iterator
+@@ -142,7 +146,7 @@
+   inline bool operator==(const Self& x) const { return idx == x.idx; }
+   inline bool operator!=(const Self& x) const { return !operator==(x); }
+ 
+-  inline pointer operator*() const { return Term->getSuccessor(idx); }
++  inline reference operator*() const { return Term->getSuccessor(idx); }
+   inline pointer operator->() const { return operator*(); }
+ 
+   inline Self& operator++() { ++idx; return *this; } // Preincrement