A ConstantValue constructor with a slice pattern is an error

Nadrieril · Nadrieril · commit 99852e0db6cd · 2020-10-18T14:21:20.000+01:00
diff --git a/compiler/rustc_mir_build/src/thir/pattern/_match.rs b/compiler/rustc_mir_build/src/thir/pattern/_match.rs
@@ -2559,7 +2559,6 @@ fn specialize_one_pattern<'p, 'tcx>(
                 let suffix = suffix.iter().enumerate().map(|(i, p)| (arity - suffix.len() + i, p));
                 Some(ctor_wild_subpatterns.replace_fields_indexed(prefix.chain(suffix)))
             }
-            ConstantValue(_) => None,
             _ => span_bug!(pat.span, "unexpected ctor {:?} for slice pat", constructor),
         },
 

Original file line number	Diff line number	Diff line change
`@@ -2559,7 +2559,6 @@ fn specialize_one_pattern<'p, 'tcx>(`
`2559`	`2559`	`let suffix = suffix.iter().enumerate().map(\|(i, p)\| (arity - suffix.len() + i, p));`
`2560`	`2560`	`Some(ctor_wild_subpatterns.replace_fields_indexed(prefix.chain(suffix)))`
`2561`	`2561`	`}`
`2562`		`- ConstantValue(_) => None,`
`2563`	`2562`	`_ => span_bug!(pat.span, "unexpected ctor {:?} for slice pat", constructor),`
`2564`	`2563`	`},`
`2565`	`2564`