Add From<!> for TryFromIntError

canndrew · canndrew · commit 15bab452f30c · 2018-03-16T23:38:36.000+08:00
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
@@ -3595,6 +3595,13 @@ impl fmt::Display for TryFromIntError {
     }
 }
 
+#[unstable(feature = "try_from", issue = "33417")]
+impl From<!> for TryFromIntError {
+    fn from(never: !) -> TryFromIntError {
+        never
+    }
+}
+
 // no possible bounds violation
 macro_rules! try_from_unbounded {
     ($source:ty, $($target:ty),*) => {$(

Original file line number	Diff line number	Diff line change
`@@ -3595,6 +3595,13 @@ impl fmt::Display for TryFromIntError {`
`3595`	`3595`	`}`
`3596`	`3596`	`}`
`3597`	`3597`
	`3598`	`+#[unstable(feature = "try_from", issue = "33417")]`
	`3599`	`+impl From<!> for TryFromIntError {`
	`3600`	`+ fn from(never: !) -> TryFromIntError {`
	`3601`	`+ never`
	`3602`	`+ }`
	`3603`	`+}`
	`3604`	`+`
`3598`	`3605`	`// no possible bounds violation`
`3599`	`3606`	`macro_rules! try_from_unbounded {`
`3600`	`3607`	`($source:ty, $($target:ty),*) => {$(`