Accept NULL for fds parameter in poll.
* Some callers, e.g. external/curl/lib/select.c, do
poll(NULL, 0, ...) and get clang-diagnostic-nonnull check error.
Test: build with WITH_TIDY=1
Bug: 111850071
Change-Id: I7ea433d185cb84011a954f05964181b5518febd4
diff --git a/libc/include/poll.h b/libc/include/poll.h
index 13b7385..e3a9039 100644
--- a/libc/include/poll.h
+++ b/libc/include/poll.h
@@ -49,7 +49,7 @@
* Returns the number of ready file descriptors on success, 0 for timeout,
* and returns -1 and sets `errno` on failure.
*/
-int poll(struct pollfd* _Nonnull __fds, nfds_t __count, int __timeout_ms);
+int poll(struct pollfd* _Nullable __fds, nfds_t __count, int __timeout_ms);
/**
* [ppoll(3)](http://man7.org/linux/man-pages/man3/ppoll.3.html) waits on a set of file descriptors
@@ -61,12 +61,12 @@
*
* Available since API level 28.
*/
-int ppoll(struct pollfd* _Nonnull __fds, nfds_t __count, const struct timespec* _Nullable __timeout, const sigset_t* _Nullable __mask) __INTRODUCED_IN(21);
+int ppoll(struct pollfd* _Nullable __fds, nfds_t __count, const struct timespec* _Nullable __timeout, const sigset_t* _Nullable __mask) __INTRODUCED_IN(21);
/**
* Like ppoll() but allows setting a signal mask with RT signals even from a 32-bit process.
*/
-int ppoll64(struct pollfd* _Nonnull __fds, nfds_t __count, const struct timespec* _Nullable __timeout, const sigset64_t* _Nullable __mask) __INTRODUCED_IN(28);
+int ppoll64(struct pollfd* _Nullable __fds, nfds_t __count, const struct timespec* _Nullable __timeout, const sigset64_t* _Nullable __mask) __INTRODUCED_IN(28);
#if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
#define _POLL_H_