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From: Dimitry Andric <dim@FreeBSD.org>
Date: Fri, 8 Aug 2014 21:27:33 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r269740 - head/contrib/libc++/include
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Author: dim
Date: Fri Aug  8 21:27:33 2014
New Revision: 269740
URL: http://svnweb.freebsd.org/changeset/base/269740

Log:
  Pull in r214736 from upstream libc++ trunk (by Marshall Clow):
  
    Fix PR#20520 - predicate called too many times in list::remove_if.
    Add tests for list, forward_list, and the std::remove_if algorithm
  
  This fixes an issue where std::list<>::remove_if() and remove() could
  erroneously visit elements twice.
  
  Reported by:	Dominic Fandrey <kamikaze@bsdforen.de>
  PR:		192303
  MFC after:	3 days

Modified:
  head/contrib/libc++/include/list

Modified: head/contrib/libc++/include/list
==============================================================================
--- head/contrib/libc++/include/list	Fri Aug  8 21:09:22 2014	(r269739)
+++ head/contrib/libc++/include/list	Fri Aug  8 21:27:33 2014	(r269740)
@@ -2046,6 +2046,8 @@ list<_Tp, _Alloc>::remove(const value_ty
             for (; __j != __e && *__j == __x; ++__j)
                 ;
             __i = erase(__i, __j);
+            if (__i != __e)
+                __i = _VSTD::next(__i);
         }
         else
             ++__i;
@@ -2065,6 +2067,8 @@ list<_Tp, _Alloc>::remove_if(_Pred __pre
             for (; __j != __e && __pred(*__j); ++__j)
                 ;
             __i = erase(__i, __j);
+            if (__i != __e)
+                __i = _VSTD::next(__i);
         }
         else
             ++__i;