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From: Dimitry Andric <dim@FreeBSD.org>
Date: Thu, 1 Jan 2015 22:44:03 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r276516 - head/contrib/llvm/tools/clang/lib/Sema
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Author: dim
Date: Thu Jan  1 22:44:02 2015
New Revision: 276516
URL: https://svnweb.freebsd.org/changeset/base/276516

Log:
  Pull in r213790 from upstream clang trunk (by Richard Smith):
  
    PR20228: don't retain a pointer to a vector element after the
    container has been resized.
  
  This fixes a possible crash when compiling certain parts of libc++'s
  type_traits header.

Modified:
  head/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp

Modified: head/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp
==============================================================================
--- head/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp	Thu Jan  1 22:26:12 2015	(r276515)
+++ head/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp	Thu Jan  1 22:44:02 2015	(r276516)
@@ -3642,12 +3642,13 @@ static bool evaluateTypeTrait(Sema &S, T
       if (T->isObjectType() || T->isFunctionType())
         T = S.Context.getRValueReferenceType(T);
       OpaqueArgExprs.push_back(
-        OpaqueValueExpr(Args[I]->getTypeLoc().getLocStart(), 
+        OpaqueValueExpr(Args[I]->getTypeLoc().getLocStart(),
                         T.getNonLValueExprType(S.Context),
                         Expr::getValueKindForType(T)));
-      ArgExprs.push_back(&OpaqueArgExprs.back());
     }
-    
+    for (Expr &E : OpaqueArgExprs)
+      ArgExprs.push_back(&E);
+
     // Perform the initialization in an unevaluated context within a SFINAE 
     // trap at translation unit scope.
     EnterExpressionEvaluationContext Unevaluated(S, Sema::Unevaluated);