Rollup merge of rust-lang#91474 - rtzoeller:dfly_set_errno, r=cuviper

matthiaskrgr · web-flow · commit 6ce8d009395c · 2021-12-03T06:24:18.000+01:00
suppress warning about set_errno being unused on DragonFly

Other targets allow this function to be unused, DragonFly just misses out due to providing a specialization.

This fixes a build error for DragonFly.
diff --git a/std/src/sys/unix/os.rs b/std/src/sys/unix/os.rs
@@ -97,6 +97,7 @@ pub fn errno() -> i32 {
 }
 
 #[cfg(target_os = "dragonfly")]
+#[allow(dead_code)]
 pub fn set_errno(e: i32) {
     extern "C" {
         #[thread_local]

Original file line number	Diff line number	Diff line change
`@@ -97,6 +97,7 @@ pub fn errno() -> i32 {`
`97`	`97`	`}`
`98`	`98`
`99`	`99`	`#[cfg(target_os = "dragonfly")]`
	`100`	`+#[allow(dead_code)]`
`100`	`101`	`pub fn set_errno(e: i32) {`
`101`	`102`	`extern "C" {`
`102`	`103`	`#[thread_local]`