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-rw-r--r--library/std/src/sys/unix/mod.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/library/std/src/sys/unix/mod.rs b/library/std/src/sys/unix/mod.rs
index e65c11b6d09..3ad03a88681 100644
--- a/library/std/src/sys/unix/mod.rs
+++ b/library/std/src/sys/unix/mod.rs
@@ -215,6 +215,7 @@ where
     }
 }
 
+#[allow(dead_code)] // Not used on all platforms.
 pub fn cvt_nz(error: libc::c_int) -> crate::io::Result<()> {
     if error == 0 { Ok(()) } else { Err(crate::io::Error::from_raw_os_error(error)) }
 }