Auto merge of #108235 - tmiasko:read-buf, r=the8472

bors · bors · commit 824f915cbc32 · 2023-02-20T03:49:04.000Z
Use custom implementation of read_buf in Read for &'a FileDesc This allows to skip an unnecessary buffer initialization. Fixes #108223.
diff --git a/library/std/src/sys/unix/fd.rs b/library/std/src/sys/unix/fd.rs
@@ -284,6 +284,10 @@ impl<'a> Read for &'a FileDesc {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         (**self).read(buf)
     }
+
+    fn read_buf(&mut self, cursor: BorrowedCursor<'_>) -> io::Result<()> {
+        (**self).read_buf(cursor)
+    }
 }
 
 impl AsInner<OwnedFd> for FileDesc {

Original file line number	Diff line number	Diff line change
`@@ -284,6 +284,10 @@ impl<'a> Read for &'a FileDesc {`
`284`	`284`	`fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {`
`285`	`285`	`(**self).read(buf)`
`286`	`286`	`}`
	`287`	`+`
	`288`	`+ fn read_buf(&mut self, cursor: BorrowedCursor<'_>) -> io::Result<()> {`
	`289`	`+ (**self).read_buf(cursor)`
	`290`	`+ }`
`287`	`291`	`}`
`288`	`292`
`289`	`293`	`impl AsInner<OwnedFd> for FileDesc {`