rust-lang
diff --git a/‎library/std/src/sys/hermit/fd.rs
+5 b/‎library/std/src/sys/hermit/fd.rs
+5
@@ -48,6 +48,11 @@ impl FileDesc {
     pub fn set_nonblocking(&self, _nonblocking: bool) -> io::Result<()> {
         unsupported()
     }
+
+    pub fn fstat(&self, stat: *mut abi::stat) -> io::Result<()> {
+        cvt(unsafe { abi::fstat(self.fd.as_raw_fd(), stat) })?;
+        Ok(())
+    }
 }
 
 impl<'a> Read for &'a FileDesc {
Original file line number	Diff line number	Diff line change
`@@ -48,6 +48,11 @@ impl FileDesc {`
`48`	`48`	`pub fn set_nonblocking(&self, _nonblocking: bool) -> io::Result<()> {`
`49`	`49`	`unsupported()`
`50`	`50`	`}`
	`51`	`+`
	`52`	`+ pub fn fstat(&self, stat: *mut abi::stat) -> io::Result<()> {`
	`53`	`+ cvt(unsafe { abi::fstat(self.fd.as_raw_fd(), stat) })?;`
	`54`	`+ Ok(())`
	`55`	`+ }`
`51`	`56`	`}`
`52`	`57`
`53`	`58`	`impl<'a> Read for &'a FileDesc {`