Box large enum variants

compiler/rustc_metadata/src/locator.rs

@@ -762,14 +762,14 @@ impl<'a> CrateLocator<'a> {
     }
 
     pub(crate) fn into_error(self, root: Option<CratePaths>) -> CrateError {
-        CrateError::LocatorCombined(CombinedLocatorError {
+        CrateError::LocatorCombined(Box::new(CombinedLocatorError {
             crate_name: self.crate_name,
             root,
             triple: self.triple,
             dll_prefix: self.target.dll_prefix.to_string(),
             dll_suffix: self.target.dll_suffix.to_string(),
             crate_rejections: self.crate_rejections,
-        })
+        }))
     }
 }
 
@@ -958,7 +958,7 @@ pub(crate) enum CrateError {
     StableCrateIdCollision(Symbol, Symbol),
     DlOpen(String),
     DlSym(String),
-    LocatorCombined(CombinedLocatorError),
+    LocatorCombined(Box<CombinedLocatorError>),
     NonDylibPlugin(Symbol),
 }
 

compiler/rustc_span/src/lib.rs

@@ -2051,13 +2051,13 @@ pub type FileLinesResult = Result<FileLines, SpanLinesError>;
 
 #[derive(Clone, PartialEq, Eq, Debug)]
 pub enum SpanLinesError {
-    DistinctSources(DistinctSources),
+    DistinctSources(Box<DistinctSources>),
 }
 
 #[derive(Clone, PartialEq, Eq, Debug)]
 pub enum SpanSnippetError {
     IllFormedSpan(Span),
-    DistinctSources(DistinctSources),
+    DistinctSources(Box<DistinctSources>),
     MalformedForSourcemap(MalformedSourceMapPositions),
     SourceNotAvailable { filename: FileName },
 }

compiler/rustc_span/src/source_map.rs

@@ -542,10 +542,10 @@ impl SourceMap {
         let hi = self.lookup_char_pos(sp.hi());
         trace!(?hi);
         if lo.file.start_pos != hi.file.start_pos {
-            return Err(SpanLinesError::DistinctSources(DistinctSources {
+            return Err(SpanLinesError::DistinctSources(Box::new(DistinctSources {
                 begin: (lo.file.name.clone(), lo.file.start_pos),
                 end: (hi.file.name.clone(), hi.file.start_pos),
-            }));
+            })));
         }
         Ok((lo, hi))
     }
@@ -603,10 +603,10 @@ impl SourceMap {
         let local_end = self.lookup_byte_offset(sp.hi());
 
         if local_begin.sf.start_pos != local_end.sf.start_pos {
-            Err(SpanSnippetError::DistinctSources(DistinctSources {
+            Err(SpanSnippetError::DistinctSources(Box::new(DistinctSources {
                 begin: (local_begin.sf.name.clone(), local_begin.sf.start_pos),
                 end: (local_end.sf.name.clone(), local_end.sf.start_pos),
-            }))
+            })))
         } else {
             self.ensure_source_file_source_present(local_begin.sf.clone());