Revert "[libunwind] Drop the dependency on <algorithm>, add placement new inline"

This reverts commit r352384: this broke on ARM as UnwindCursor.hpp
still has some C++ library dependencies.

llvm-svn: 352427

1 files changed, 4 insertions, 4 deletions

diff --git a/libunwind/src/libunwind.cpp b/libunwind/src/libunwind.cpp
index cfa9112a633..a2496a06de9 100644
--- a/libunwind/src/libunwind.cpp
+++ b/libunwind/src/libunwind.cpp
@@ -11,6 +11,10 @@
 
 #include <libunwind.h>
 
+#ifndef NDEBUG
+#include <cstdlib> // getenv
+#endif
+
 #include "libunwind_ext.h"
 #include "config.h"
 
@@ -23,10 +27,6 @@
 
 using namespace libunwind;
 
-// libunwind does not and should not depend on C++ library which means that we
-// need our own declaration of global placement new.
-void *operator new(size_t, void*);
-
 /// internal object to represent this processes address space
 LocalAddressSpace LocalAddressSpace::sThisAddressSpace;