MSVC_BUILTIN 56 maint/gnulib/lib/ffsl.h #elif defined _MSC_VER && defined MSVC_BUILTIN MSVC_BUILTIN 60 maint/gnulib/lib/ffsl.h if (MSVC_BUILTIN (&bit, i)) MSVC_BUILTIN 74 maint/gnulib/lib/integer_length_l.c #elif defined _MSC_VER && defined MSVC_BUILTIN MSVC_BUILTIN 78 maint/gnulib/lib/integer_length_l.c if (MSVC_BUILTIN (&bit, x))