build: Fix build after rust-lang/rust#60951

Author: tesuji

src/operator.rs

@@ -64,12 +64,12 @@ impl<'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'mir, 'tcx> {
             assert!(right.layout.ty.is_integral());
             let l_bits = self.force_bits(left.imm.to_scalar()?, left.layout.size)?;
             let r_bits = self.force_bits(right.imm.to_scalar()?, right.layout.size)?;
-            
+
             let left = ImmTy::from_scalar(Scalar::from_uint(l_bits, left.layout.size), left.layout);
             let right = ImmTy::from_scalar(Scalar::from_uint(r_bits, left.layout.size), right.layout);
 
             return self.binary_op(bin_op, left, right);
-        } 
+        }
 
         // Operations that support fat pointers
         match bin_op {
@@ -391,11 +391,12 @@ impl<'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'mir, 'tcx> {
         pointee_ty: Ty<'tcx>,
         offset: i64,
     ) -> InterpResult<'tcx, Scalar<Tag>> {
+        use rustc::mir::interpret::InterpError::Panic;
         // FIXME: assuming here that type size is less than `i64::max_value()`.
         let pointee_size = self.layout_of(pointee_ty)?.size.bytes() as i64;
         let offset = offset
             .checked_mul(pointee_size)
-            .ok_or_else(|| InterpError::Overflow(mir::BinOp::Mul))?;
+            .ok_or_else(|| Panic(PanicMessage::Overflow(mir::BinOp::Mul)))?;
         // Now let's see what kind of pointer this is.
         let ptr = if offset == 0 {
             match ptr {

src/shims/foreign_items.rs

@@ -128,6 +128,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
         dest: Option<PlaceTy<'tcx, Tag>>,
         ret: Option<mir::BasicBlock>,
     ) -> InterpResult<'tcx> {
+        use rustc::mir::interpret::InterpError::Panic;
         let this = self.eval_context_mut();
         let attrs = this.tcx.get_attrs(def_id);
         let link_name = match attr::first_attr_value_str_by_name(&attrs, sym::link_name) {
@@ -167,7 +168,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
             "calloc" => {
                 let items = this.read_scalar(args[0])?.to_usize(this)?;
                 let len = this.read_scalar(args[1])?.to_usize(this)?;
-                let size = items.checked_mul(len).ok_or_else(|| InterpError::Overflow(mir::BinOp::Mul))?;
+                let size = items.checked_mul(len).ok_or_else(|| Panic(PanicMessage::Overflow(mir::BinOp::Mul)))?;
                 let res = this.malloc(size, /*zero_init:*/ true, MiriMemoryKind::C);
                 this.write_scalar(res, dest)?;
             }