Take some changes from Apple's Developer Tools 4.0 [1]: block.patch emergency-buffer-reduction.patch test_cleanup.patch vector_copy_no_alloc.patch problem/6473222 copy-constructing a std::vector from an empty std::vector calls malloc 2008-10-27 Howard Hinnant stl_tree_system_header.patch Added #pragma GCC system_header to stl_tree.h. copy_doc.patch Corrected documentation concerning copy in stl_algobase.h. string_compare.patch Fixed basic_string.h, basic_string.tcc, incorrect 64bit to 32bit narrowing. Reference: [1] http://opensource.apple.com/source/libstdcxx/libstdcxx-39/patches-4.2.1/ Obtained from: Apple MFC after: 1 month