The future is now (2018 edition).

Bug: N/A
Test: builds
Change-Id: Ic638e5b1f4e5901885fe7bc60b2a265817636b21
diff --git a/libc/include/sys/random.h b/libc/include/sys/random.h
index 3475652..4b849f3 100644
--- a/libc/include/sys/random.h
+++ b/libc/include/sys/random.h
@@ -38,9 +38,9 @@
 
 /* See also arc4random_buf in <stdlib.h>, which is available in all API levels. */
 
-int getentropy(void* __buffer, size_t __buffer_size) __wur __INTRODUCED_IN_FUTURE;
+int getentropy(void* __buffer, size_t __buffer_size) __wur __INTRODUCED_IN(28);
 
-ssize_t getrandom(void* __buffer, size_t __buffer_size, unsigned int __flags) __wur __INTRODUCED_IN_FUTURE;
+ssize_t getrandom(void* __buffer, size_t __buffer_size, unsigned int __flags) __wur __INTRODUCED_IN(28);
 
 __END_DECLS