Derive HashStable for PanicStrategy.

Author: cjgillot

src/librustc/ich/impls_misc.rs

@@ -10,7 +10,6 @@ mod caching_source_map_view;
 mod hcx;
 
 mod impls_hir;
-mod impls_misc;
 mod impls_ty;
 mod impls_syntax;
 

src/librustc/ich/mod.rs

@@ -42,6 +42,8 @@ use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use crate::spec::abi::{Abi, lookup as lookup_abi};
 
+use rustc_macros::HashStable_Generic;
+
 pub mod abi;
 mod android_base;
 mod apple_base;
@@ -153,7 +155,7 @@ flavor_mappings! {
     ((LinkerFlavor::Lld(LldFlavor::Link)), "lld-link"),
 }
 
-#[derive(Clone, Copy, Debug, PartialEq, Hash, RustcEncodable, RustcDecodable)]
+#[derive(Clone, Copy, Debug, PartialEq, Hash, RustcEncodable, RustcDecodable, HashStable_Generic)]
 pub enum PanicStrategy {
     Unwind,
     Abort,