__glibc_has_builtin   50 maint/gnulib/lib/cdefs.h # define __glibc_has_builtin(name) __has_builtin (name)
__glibc_has_builtin   52 maint/gnulib/lib/cdefs.h # define __glibc_has_builtin(name) 0
__glibc_has_builtin  148 maint/gnulib/lib/libc-config.h # undef __glibc_has_builtin