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From: "mlichvar at redhat dot com" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sourceware.org Subject: [Bug libc/29417] poll() declared with write-only fds Date: Wed, 27 Jul 2022 15:18:28 +0000 [thread overview] Message-ID: <bug-29417-131-fm5ILH93tW@http.sourceware.org/bugzilla/> (raw) In-Reply-To: <bug-29417-131@http.sourceware.org/bugzilla/> https://sourceware.org/bugzilla/show_bug.cgi?id=29417 --- Comment #2 from Miroslav Lichvar <mlichvar at redhat dot com> --- FWIW, a poll() function using that declaration triggers a compiler warning: #include <poll.h> int poll(struct pollfd *fds, nfds_t nfds, int timeout) { return nfds >= 1 && fds[0].fd >= 0; } x.c: In function ‘poll’: x.c:4:35: warning: ‘*fds.fd’ may be used uninitialized [-Wmaybe-uninitialized] 4 | return nfds >= 1 && fds[0].fd >= 0; | ~~~~~~^~~ x.c:3:25: note: accessing argument 1 of a function declared with attribute ‘access (write_only, 1, 2)’ 3 | int poll(struct pollfd *fds, nfds_t nfds, int timeout) { | ~~~~~~~~~~~~~~~^~~ -- You are receiving this mail because: You are on the CC list for the bug.
next prev parent reply other threads:[~2022-07-27 15:18 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-07-27 12:46 [Bug libc/29417] New: " mlichvar at redhat dot com 2022-07-27 15:03 ` [Bug libc/29417] " fweimer at redhat dot com 2022-07-27 15:18 ` mlichvar at redhat dot com [this message] 2022-07-27 15:39 ` fweimer at redhat dot com 2022-07-27 18:40 ` siddhesh at sourceware dot org 2022-07-27 18:44 ` siddhesh at sourceware dot org 2022-07-27 18:56 ` fweimer at redhat dot com
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