Use explicit case rather than catch-all

hydhknn · hydhknn · commit 16ccdba8512f · 2014-10-11T12:03:15.000-04:00
diff --git a/src/librustc/middle/check_match.rs b/src/librustc/middle/check_match.rs
@@ -284,7 +284,9 @@ fn check_arms(cx: &MatchCheckCtxt, arms: &[(Vec<P<Pat>>, Option<&Expr>)], source
                             span_err!(cx.tcx.sess, span, E0165, "irrefutable while-let pattern");
                         },
 
-                        _ => span_err!(cx.tcx.sess, pat.span, E0001, "unreachable pattern")
+                        MatchNormal => {
+                            span_err!(cx.tcx.sess, pat.span, E0001, "unreachable pattern")
+                        },
                     }
                 }
                 Useful => (),

Original file line number	Diff line number	Diff line change
`@@ -284,7 +284,9 @@ fn check_arms(cx: &MatchCheckCtxt, arms: &[(Vec<P<Pat>>, Option<&Expr>)], source`
`284`	`284`	`span_err!(cx.tcx.sess, span, E0165, "irrefutable while-let pattern");`
`285`	`285`	`},`
`286`	`286`
`287`		`- _ => span_err!(cx.tcx.sess, pat.span, E0001, "unreachable pattern")`
	`287`	`+ MatchNormal => {`
	`288`	`+ span_err!(cx.tcx.sess, pat.span, E0001, "unreachable pattern")`
	`289`	`+ },`
`288`	`290`	`}`
`289`	`291`	`}`
`290`	`292`	`Useful => (),`