rename FrameInfo span field to call_site

Author: RalfJung

src/librustc/ich/impls_ty.rs

@@ -388,7 +388,7 @@ impl_stable_hash_for!(enum mir::interpret::ErrorHandled {
 });
 
 impl_stable_hash_for!(struct mir::interpret::FrameInfo<'tcx> {
-    span,
+    call_site,
     lint_root,
     instance
 });

src/librustc/mir/interpret/error.rs

@@ -57,7 +57,7 @@ pub struct ConstEvalErr<'tcx> {
 
 #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
 pub struct FrameInfo<'tcx> {
-    pub span: Span,
+    pub call_site: Span, // this span is in the caller!
     pub instance: ty::Instance<'tcx>,
     pub lint_root: Option<ast::NodeId>,
 }
@@ -72,8 +72,8 @@ impl<'tcx> fmt::Display for FrameInfo<'tcx> {
             } else {
                 write!(f, "inside call to `{}`", self.instance)?;
             }
-            if !self.span.is_dummy() {
-                let lo = tcx.sess.source_map().lookup_char_pos_adj(self.span.lo());
+            if !self.call_site.is_dummy() {
+                let lo = tcx.sess.source_map().lookup_char_pos_adj(self.call_site.lo());
                 write!(f, " at {}:{}:{}", lo.filename, lo.line, lo.col.to_usize() + 1)?;
             }
             Ok(())
@@ -159,7 +159,7 @@ impl<'a, 'gcx, 'tcx> ConstEvalErr<'tcx> {
         // on constant values.
         if self.stacktrace.len() > 0 {
             for frame_info in &self.stacktrace[..self.stacktrace.len()-1] {
-                err.span_label(frame_info.span, frame_info.to_string());
+                err.span_label(frame_info.call_site, frame_info.to_string());
             }
         }
         Ok(err)

src/librustc_mir/interpret/eval_context.rs

@@ -679,7 +679,7 @@ impl<'a, 'mir, 'tcx: 'mir, M: Machine<'a, 'mir, 'tcx>> EvalContext<'a, 'mir, 'tc
                 mir::ClearCrossCrate::Set(ref ivs) => Some(ivs[source_info.scope].lint_root),
                 mir::ClearCrossCrate::Clear => None,
             };
-            frames.push(FrameInfo { span, instance, lint_root });
+            frames.push(FrameInfo { call_site: span, instance, lint_root });
         }
         trace!("generate stacktrace: {:#?}, {:?}", frames, explicit_span);
         frames