bump miri dependencies

[rust.git] / src / intptrcast.rs

diff --git a/src/intptrcast.rs b/src/intptrcast.rs
index 5413e6b935b9b735a64f7929238ea76b4ef37729..0e6a9f69aebab656228929959ae560419325dd48 100644 (file)
--- a/src/intptrcast.rs
+++ b/src/intptrcast.rs
@@ -6,10 +6,9 @@
 use rand::Rng;
 
 use rustc_data_structures::fx::FxHashMap;
-use rustc_mir::interpret::{AllocCheck, AllocId, InterpResult, Memory, Machine, Pointer, PointerArithmetic};
 use rustc_target::abi::{Size, HasDataLayout};
 
-use crate::{Evaluator, Tag, STACK_ADDR};
+use crate::*;
 
 pub type MemoryExtra = RefCell<GlobalState>;
 
@@ -46,6 +45,8 @@ pub fn int_to_ptr(
         let global_state = memory.extra.intptrcast.borrow();
         let pos = global_state.int_to_ptr_map.binary_search_by_key(&int, |(addr, _)| *addr);
 
+        // The int must be in-bounds after being cast to a pointer, so we error
+        // with `CheckInAllocMsg::InboundsTest`.
         Ok(match pos {
             Ok(pos) => {
                 let (_, alloc_id) = global_state.int_to_ptr_map[pos];
@@ -53,7 +54,7 @@ pub fn int_to_ptr(
                 // zero. The pointer is untagged because it was created from a cast
                 Pointer::new_with_tag(alloc_id, Size::from_bytes(0), Tag::Untagged)
             }
-            Err(0) => throw_ub!(InvalidIntPointerUsage(int)),
+            Err(0) => throw_ub!(DanglingIntPointer(int, CheckInAllocMsg::InboundsTest)),
             Err(pos) => {
                 // This is the largest of the adresses smaller than `int`,
                 // i.e. the greatest lower bound (glb)
@@ -65,7 +66,7 @@ pub fn int_to_ptr(
                     // This pointer is untagged because it was created from a cast
                     Pointer::new_with_tag(alloc_id, Size::from_bytes(offset), Tag::Untagged)
                 } else {
-                    throw_ub!(InvalidIntPointerUsage(int))
+                    throw_ub!(DanglingIntPointer(int, CheckInAllocMsg::InboundsTest))
                 }
             }
         })
@@ -77,7 +78,7 @@ pub fn ptr_to_int(
     ) -> InterpResult<'tcx, u64> {
         let mut global_state = memory.extra.intptrcast.borrow_mut();
         let global_state = &mut *global_state;
-        let id = Evaluator::canonical_alloc_id(memory, ptr.alloc_id);
+        let id = ptr.alloc_id;
 
         // There is nothing wrong with a raw pointer being cast to an integer only after
         // it became dangling.  Hence `MaybeDead`.
@@ -91,7 +92,7 @@ pub fn ptr_to_int(
                 let slack = {
                     let mut rng = memory.extra.rng.borrow_mut();
                     // This means that `(global_state.next_base_addr + slack) % 16` is uniformly distributed.
-                    rng.gen_range(0, 16)
+                    rng.gen_range(0..16)
                 };
                 // From next_base_addr + slack, round up to adjust for alignment.
                 let base_addr = global_state.next_base_addr.checked_add(slack).unwrap();