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authorNiko Matsakis <niko@alum.mit.edu>2017-03-17 09:51:31 -0400
committerNiko Matsakis <niko@alum.mit.edu>2017-03-30 07:55:29 -0400
commit56847af9163284f928d5632a3d0d29399716414f (patch)
treec24655c7585a84a0e9f09db0d3552b11af72ed0c /src/libsyntax/parse
parentdad314040764122fc78a7f8b70ffa9ef77bde3c5 (diff)
downloadrust-56847af9163284f928d5632a3d0d29399716414f.tar.gz
rust-56847af9163284f928d5632a3d0d29399716414f.zip
port the match code to use `CoerceMany`
`match { }` now (correctly?) indicates divergence, which results in more
unreachable warnings. We also avoid fallback to `!` if there is just one
arm (see new test: `match-unresolved-one-arm.rs`).
Diffstat (limited to 'src/libsyntax/parse')
-rw-r--r--src/libsyntax/parse/obsolete.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libsyntax/parse/obsolete.rs b/src/libsyntax/parse/obsolete.rs
index a46a788ca08..d5baec675e4 100644
--- a/src/libsyntax/parse/obsolete.rs
+++ b/src/libsyntax/parse/obsolete.rs
@@ -36,6 +36,7 @@ pub trait ParserObsoleteMethods {
 impl<'a> ParserObsoleteMethods for parser::Parser<'a> {
     /// Reports an obsolete syntax non-fatal error.
     #[allow(unused_variables)]
+    #[allow(unreachable_code)]
     fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax) {
         let (kind_str, desc, error) = match kind {
             // Nothing here at the moment