Fix comments related to abort()

compiler/rustc_mir/src/const_eval/machine.rs

@@ -333,6 +333,10 @@ fn assert_panic(
         Err(ConstEvalErrKind::AssertFailure(err).into())
     }
 
+    fn abort(_ecx: &mut InterpCx<'mir, 'tcx, Self>, msg: String) -> InterpResult<'tcx, !> {
+        Err(ConstEvalErrKind::Abort(msg).into())
+    }
+
     fn ptr_to_int(_mem: &Memory<'mir, 'tcx, Self>, _ptr: Pointer) -> InterpResult<'tcx, u64> {
         Err(ConstEvalErrKind::NeedsRfc("pointer-to-integer cast".to_string()).into())
     }

compiler/rustc_mir/src/interpret/intrinsics.rs

@@ -126,7 +126,7 @@ pub fn emulate_intrinsic(
             None => match intrinsic_name {
                 sym::transmute => throw_ub_format!("transmuting to uninhabited type"),
                 sym::unreachable => throw_ub!(Unreachable),
-                sym::abort => M::abort(self, "aborted execution".to_owned())?,
+                sym::abort => M::abort(self, "the program aborted execution".to_owned())?,
                 // Unsupported diverging intrinsic.
                 _ => return Ok(false),
             },

compiler/rustc_mir/src/interpret/machine.rs

@@ -176,10 +176,8 @@ fn assert_panic(
     ) -> InterpResult<'tcx>;
 
     /// Called to evaluate `Abort` MIR terminator.
-    fn abort(_ecx: &mut InterpCx<'mir, 'tcx, Self>, msg: String) -> InterpResult<'tcx, !> {
-        use crate::const_eval::ConstEvalErrKind;
-
-        Err(ConstEvalErrKind::Abort(msg).into())
+    fn abort(_ecx: &mut InterpCx<'mir, 'tcx, Self>, _msg: String) -> InterpResult<'tcx, !> {
+        throw_unsup_format!("aborting execution is not supported")
     }
 
     /// Called for all binary operations where the LHS has pointer type.

compiler/rustc_mir/src/interpret/terminator.rs

@@ -110,7 +110,7 @@ pub(super) fn eval_terminator(
             }
 
             Abort => {
-                M::abort(self, "aborted execution".to_owned())?;
+                M::abort(self, "the program aborted execution".to_owned())?;
             }
 
             // When we encounter Resume, we've finished unwinding