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[PATCH 1/9] ENABLE_CHECKING refactoring gcc/ChangeLog: 2015-10-05 Mikhail Maltsev <maltsevm@gmail.com> * common.opt: Add flag_checking. * system.h (CHECKING_P): Define. libcpp/ChangeLog: 2015-10-05 Mikhail Maltsev <maltsevm@gmail.com> * system.h (CHECKING_P, gcc_checking_assert): Define. From-SVN: r228787