Use pointer::write_bytes for android sigemptyset

src/libstd/sys/unix/process/process_common.rs

@@ -437,7 +437,7 @@ mod tests {
 
  #[cfg(target_os = "android")]
  unsafe fn sigemptyset(set: *mut libc::sigset_t) -> libc::c_int {
- libc::memset(set as *mut _, 0, mem::size_of::<libc::sigset_t>());
+ set.write_bytes(0u8, 1);
  return 0;
  }
 

src/libstd/sys/unix/process/process_unix.rs

@@ -202,7 +202,7 @@ impl Command {
  // emscripten has no signal support.
  #[cfg(not(any(target_os = "emscripten")))]
  {
- use crate::mem::{self, MaybeUninit};
+ use crate::mem::MaybeUninit;
  // Reset signal handling so the child process starts in a
  // standardized state. libstd ignores SIGPIPE, and signal-handling
  // libraries often set a mask. Child processes inherit ignored
@@ -215,9 +215,7 @@ impl Command {
  // Implementing sigemptyset allow us to support older Android
  // versions. See the comment about Android and sig* functions in
  // process_common.rs
- libc::memset(set.as_mut_ptr() as *mut _,
- 0,
- mem::size_of::<libc::sigset_t>());
+ set.as_mut_ptr().write_bytes(0u8, 1);
  } else {
  cvt(libc::sigemptyset(set.as_mut_ptr()))?;
  }