Add __INTRODUCED_IN_FUTURE for unreleased APIs.
Future API levels aren't known (e.g. 25 could be a maintenance release
of N that doesn't contain any bionic updates), so use a placeholder
macro that we can find and replace with the actual API level before each
release.
Bug: http://b/28178111
Change-Id: I667fe53ea1ac49b64135170fc30d5dbe9df94e29
diff --git a/libc/include/mntent.h b/libc/include/mntent.h
index b5fb98c..ad9d72f 100644
--- a/libc/include/mntent.h
+++ b/libc/include/mntent.h
@@ -61,7 +61,7 @@
struct mntent* getmntent(FILE*);
struct mntent* getmntent_r(FILE*, struct mntent*, char*, int) __INTRODUCED_IN(21);
FILE* setmntent(const char*, const char*) __INTRODUCED_IN(21);
-char* hasmntopt(const struct mntent*, const char*) __INTRODUCED_IN(25);
+char* hasmntopt(const struct mntent*, const char*) __INTRODUCED_IN_FUTURE;
__END_DECLS