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authorFelix S. Klock II <pnkfelix@pnkfx.org>2018-04-20 17:07:58 +0200
committerFelix S. Klock II <pnkfelix@pnkfx.org>2018-04-20 18:09:28 +0200
commitfadabd6fbbfe1a401bbdd4ba0919b21ba4f7c5d2 (patch)
tree271fba7df00efddcfaec54a88dabbcf038158046 /src/libstd
parent1a4443995c91648460a5483ca8b7886cd04197e2 (diff)
downloadrust-fadabd6fbbfe1a401bbdd4ba0919b21ba4f7c5d2.tar.gz
rust-fadabd6fbbfe1a401bbdd4ba0919b21ba4f7c5d2.zip
Revert stabilization of `feature(never_type)`.
This commit is just covering the feature gate itself and the tests
that made direct use of `!` and thus need to opt back into the
feature.

A follow on commit brings back the other change that motivates the
revert: Namely, going back to the old rules for falling back to `()`.
Diffstat (limited to 'src/libstd')
-rw-r--r--src/libstd/error.rs2
-rw-r--r--src/libstd/lib.rs1
2 files changed, 2 insertions, 1 deletions
diff --git a/src/libstd/error.rs b/src/libstd/error.rs
index 3c209928d43..6c149b2e0f1 100644
--- a/src/libstd/error.rs
+++ b/src/libstd/error.rs
@@ -233,7 +233,7 @@ impl<'a> From<Cow<'a, str>> for Box<Error> {
     }
 }
 
-#[stable(feature = "never_type", since = "1.26.0")]
+#[unstable(feature = "never_type", issue = "35121")]
 impl Error for ! {
     fn description(&self) -> &str { *self }
 }
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 7d896695311..8980cd8c6a4 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -275,6 +275,7 @@
 #![feature(macro_reexport)]
 #![feature(macro_vis_matcher)]
 #![feature(needs_panic_runtime)]
+#![feature(never_type)]
 #![feature(exhaustive_patterns)]
 #![feature(nonzero)]
 #![feature(num_bits_bytes)]