Commit 991560fb49

Pat Tullmann <pat.github@tullmann.org>
2025-04-08 23:03:31
linux.zig: epoll_wait: pass kernel sigset size
Linux kernel syscalls expect to be given the number of bits of sigset that they're built for, not the full 1024-bit sigsets that glibc supports. I audited the other syscalls in here that use `sigset_t` and they're all using `NSIG / 8`. Fixes #12715
master
1 parent f4e3631
Changed files (1)
lib
std
os
linux.zig
lib/std/os/linux.zig
@@ -2242,7 +2242,7 @@ pub fn epoll_pwait(epoll_fd: i32, events: [*]epoll_event, maxevents: u32, timeou
         @as(usize, @intCast(maxevents)),
         @as(usize, @bitCast(@as(isize, timeout))),
         @intFromPtr(sigmask),
-        @sizeOf(sigset_t),
+        NSIG / 8,
     );
 }