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The aligned versions of operator new should use the align_alloc attribute to help the compiler. PR c++/86878 requests that the compiler would use the attribute to warn about invalid attributes, so an XFAILed test is added for that. libstdc++-v3/ChangeLog: * libsupc++/new (operator new): Add attribute align_alloc(2) to overloads taking a std::align_val_t argument. * testsuite/18_support/new_aligned_warn.cc: New test. Reviewed-by: Jakub Jelinek <jakub@redhat.com>
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