Do not ICE if some foreign expansions were not encoded.

[rust.git] / compiler / rustc_metadata / src / rmeta / decoder.rs

diff --git a/compiler/rustc_metadata/src/rmeta/decoder.rs b/compiler/rustc_metadata/src/rmeta/decoder.rs
index eb3a9f576a735429415e0d1e6198b296a33cf342..9b97d1a4762105efdea01851382e6f5793e1da44 100644 (file)
--- a/compiler/rustc_metadata/src/rmeta/decoder.rs
+++ b/compiler/rustc_metadata/src/rmeta/decoder.rs
@@ -21,8 +21,6 @@
 use rustc_hir::lang_items;
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_middle::hir::exports::Export;
-use rustc_middle::middle::cstore::{CrateSource, ExternCrate};
-use rustc_middle::middle::cstore::{ForeignModule, LinkagePreference, NativeLib};
 use rustc_middle::middle::exported_symbols::{ExportedSymbol, SymbolExportLevel};
 use rustc_middle::mir::interpret::{AllocDecodingSession, AllocDecodingState};
 use rustc_middle::mir::{self, Body, Promoted};
@@ -30,6 +28,9 @@
 use rustc_middle::ty::codec::TyDecoder;
 use rustc_middle::ty::{self, Ty, TyCtxt, Visibility};
 use rustc_serialize::{opaque, Decodable, Decoder};
+use rustc_session::cstore::{
+    CrateSource, ExternCrate, ForeignModule, LinkagePreference, NativeLib,
+};
 use rustc_session::Session;
 use rustc_span::hygiene::{ExpnIndex, MacroKind};
 use rustc_span::source_map::{respan, Spanned};
@@ -1623,7 +1624,7 @@ fn def_path_hash_to_def_index(&self, hash: DefPathHash) -> DefIndex {
         self.def_path_hash_map.def_path_hash_to_def_index(&hash)
     }
 
-    fn expn_hash_to_expn_id(&self, index_guess: u32, hash: ExpnHash) -> ExpnId {
+    fn expn_hash_to_expn_id(&self, sess: &Session, index_guess: u32, hash: ExpnHash) -> ExpnId {
         debug_assert_eq!(ExpnId::from_hash(hash), None);
         let index_guess = ExpnIndex::from_u32(index_guess);
         let old_hash = self.root.expn_hashes.get(self, index_guess).map(|lazy| lazy.decode(self));
@@ -1645,8 +1646,6 @@ fn expn_hash_to_expn_id(&self, index_guess: u32, hash: ExpnHash) -> ExpnId {
                     let i = ExpnIndex::from_u32(i);
                     if let Some(hash) = self.root.expn_hashes.get(self, i) {
                         map.insert(hash.decode(self), i);
-                    } else {
-                        panic!("Missing expn_hash entry for {:?}", i);
                     }
                 }
                 map
@@ -1654,7 +1653,7 @@ fn expn_hash_to_expn_id(&self, index_guess: u32, hash: ExpnHash) -> ExpnId {
             map[&hash]
         };
 
-        let data = self.root.expn_data.get(self, index).unwrap().decode(self);
+        let data = self.root.expn_data.get(self, index).unwrap().decode((self, sess));
         rustc_span::hygiene::register_expn_id(self.cnum, index, data, hash)
     }