API guard every post-21 API.
This was generated mechanically by reverting my recent re-hide commits
(except for mempcpy, but versioner cleaned that up for me anyway),
reverting the commits which removed versioner, then:
```
m out/soong/ndk_headers.timestamp
cp -r out/soong/ndk/sysroot/usr/include/* bionic/libc/include
git -C bionic clean -df
```
Effectively, this has restored the `versioner` processed headers, but
I'm checking the results of that in so we don't have to keep
`versioner` around.
For the NDK, this restores r27 behavior by default. Anyone that's
opted into weak APIs will get the new behavior. I think this is our
best option. Anyone writing code with Android in mind should be using
weak APIs, but any code being lightly ported (and thus using the
default configuration) should not be, and it's those ports where we're
having trouble with collisions.
Bug: https://github.com/android/ndk/issues/2081
Test: None
Change-Id: I370079d27566b0c1543fb5890c958c8d09b05006
diff --git a/libc/include/sys/thread_properties.h b/libc/include/sys/thread_properties.h
index efd212a..b6214ee 100644
--- a/libc/include/sys/thread_properties.h
+++ b/libc/include/sys/thread_properties.h
@@ -50,6 +50,8 @@
*
* Available since API level 31.
*/
+
+#if __BIONIC_AVAILABILITY_GUARD(31)
void __libc_get_static_tls_bounds(void* _Nonnull * _Nonnull __static_tls_begin,
void* _Nonnull * _Nonnull __static_tls_end) __INTRODUCED_IN(31);
@@ -93,5 +95,7 @@
void* _Nonnull __dynamic_tls_end),
void (* _Nonnull __on_destruction)(void* _Nonnull __dynamic_tls_begin,
void* _Nonnull __dynamic_tls_end)) __INTRODUCED_IN(31);
+#endif /* __BIONIC_AVAILABILITY_GUARD(31) */
+
__END_DECLS