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56 #ifndef _GLIBCXX_UTILITY
57 #define _GLIBCXX_UTILITY 1
59 #pragma GCC system_header
65 #ifdef __GXX_EXPERIMENTAL_CXX0X__
66 # if defined(_GLIBCXX_INCLUDE_AS_TR1)
67 # error C++0x header cannot be included from TR1 header
69 # if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
72 # define _GLIBCXX_INCLUDE_AS_CXX0X
73 # define _GLIBCXX_BEGIN_NAMESPACE_TR1
74 # define _GLIBCXX_END_NAMESPACE_TR1
78 # undef _GLIBCXX_END_NAMESPACE_TR1
79 # undef _GLIBCXX_BEGIN_NAMESPACE_TR1
80 # undef _GLIBCXX_INCLUDE_AS_CXX0X