Encode exported symbols last

src/librustc_metadata/rmeta/encoder.rs

@@ -467,12 +467,6 @@ impl<'tcx> EncodeContext<'tcx> {
         let impls = self.encode_impls();
         let impl_bytes = self.position() - i;
 
-        // Encode exported symbols info.
-        i = self.position();
-        let exported_symbols = self.tcx.exported_symbols(LOCAL_CRATE);
-        let exported_symbols = self.encode_exported_symbols(&exported_symbols);
-        let exported_symbols_bytes = self.position() - i;
-
         let tcx = self.tcx;
 
         // Encode the items.
@@ -513,6 +507,12 @@ impl<'tcx> EncodeContext<'tcx> {
         let proc_macro_data = self.encode_proc_macros();
         let proc_macro_data_bytes = self.position() - i;
 
+        // Encode exported symbols info.
+        i = self.position();
+        let exported_symbols = self.tcx.exported_symbols(LOCAL_CRATE);
+        let exported_symbols = self.encode_exported_symbols(&exported_symbols);
+        let exported_symbols_bytes = self.position() - i;
+
         let attrs = tcx.hir().krate_attrs();
         let has_default_lib_allocator = attr::contains_name(&attrs, sym::default_lib_allocator);
 

src/librustc_metadata/rmeta/mod.rs

@@ -196,14 +196,15 @@ crate struct CrateRoot<'tcx> {
     source_map: Lazy<[rustc_span::SourceFile]>,
     def_path_table: Lazy<map::definitions::DefPathTable>,
     impls: Lazy<[TraitImpls]>,
-    exported_symbols: Lazy!([(ExportedSymbol<'tcx>, SymbolExportLevel)]),
     interpret_alloc_index: Lazy<[u32]>,
 
     per_def: LazyPerDefTables<'tcx>,
 
     /// The DefIndex's of any proc macros declared by this crate.
     proc_macro_data: Option<Lazy<[DefIndex]>>,
 
+    exported_symbols: Lazy!([(ExportedSymbol<'tcx>, SymbolExportLevel)]),
+
     compiler_builtins: bool,
     needs_allocator: bool,
     needs_panic_runtime: bool,