Nullability check for swab module.
Bugs: b/245972273
Test: adb shell
Change-Id: I92ce194ac12cbc337932357567b8450c484f93f3
diff --git a/libc/include/bits/swab.h b/libc/include/bits/swab.h
index 63281b6..9591c2e 100644
--- a/libc/include/bits/swab.h
+++ b/libc/include/bits/swab.h
@@ -38,7 +38,7 @@
__BEGIN_DECLS
-__BIONIC_SWAB_INLINE void swab(const void* __void_src, void* __void_dst, ssize_t __byte_count) {
+__BIONIC_SWAB_INLINE void swab(const void* _Nonnull __void_src, void* _Nonnull __void_dst, ssize_t __byte_count) {
const uint8_t* __src = __BIONIC_CAST(static_cast, const uint8_t*, __void_src);
uint8_t* __dst = __BIONIC_CAST(static_cast, uint8_t*, __void_dst);
while (__byte_count > 1) {
