Remove `proc` types/expressions from the parser, compiler, and

language. Recommend `move||` instead.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/libsyntax/parse/obsolete.rs b/src/libsyntax/parse/obsolete.rs
index 2a2bb42cef0..3a7cc77515d 100644
--- a/src/libsyntax/parse/obsolete.rs
+++ b/src/libsyntax/parse/obsolete.rs
@@ -32,6 +32,8 @@ pub enum ObsoleteSyntax {
     ObsoleteImportRenaming,
     ObsoleteSubsliceMatch,
     ObsoleteExternCrateRenaming,
+    ObsoleteProcType,
+    ObsoleteProcExpr,
 }
 
 impl Copy for ObsoleteSyntax {}
@@ -55,6 +57,14 @@ impl<'a> ParserObsoleteMethods for parser::Parser<'a> {
     /// Reports an obsolete syntax non-fatal error.
     fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax) {
         let (kind_str, desc) = match kind {
+            ObsoleteProcType => (
+                "the `proc` type",
+                "use unboxed closures instead",
+            ),
+            ObsoleteProcExpr => (
+                "`proc` expression",
+                "use a `move ||` expression instead",
+            ),
             ObsoleteOwnedType => (
                 "`~` notation for owned pointers",
                 "use `Box<T>` in `std::owned` instead"