Merge from rustc

Author: The Miri Cronjob Bot

cargo-miri/src/setup.rs

@@ -83,7 +83,7 @@ pub fn setup(
         SysrootConfig::NoStd
     } else {
         SysrootConfig::WithStd {
-            std_features: ["panic_unwind", "backtrace"].into_iter().map(Into::into).collect(),
+            std_features: ["panic-unwind", "backtrace"].into_iter().map(Into::into).collect(),
         }
     };
     let cargo_cmd = {

src/bin/miri.rs

@@ -296,6 +296,7 @@ impl rustc_driver::Callbacks for MiriBeRustCompilerCalls {
                                         level: SymbolExportLevel::C,
                                         kind: SymbolExportKind::Text,
                                         used: false,
+                                        rustc_std_internal_symbol: false,
                                     },
                                 ))
                             } else {

src/borrow_tracker/stacked_borrows/mod.rs

@@ -814,7 +814,7 @@ trait EvalContextPrivExt<'tcx, 'ecx>: crate::MiriInterpCxExt<'tcx> {
         info: RetagInfo, // diagnostics info about this retag
     ) -> InterpResult<'tcx, MPlaceTy<'tcx>> {
         let this = self.eval_context_mut();
-        let size = this.size_and_align_of_mplace(place)?.map(|(size, _)| size);
+        let size = this.size_and_align_of_val(place)?.map(|(size, _)| size);
         // FIXME: If we cannot determine the size (because the unsized tail is an `extern type`),
         // bail out -- we cannot reasonably figure out which memory range to reborrow.
         // See https://github.com/rust-lang/unsafe-code-guidelines/issues/276.

src/borrow_tracker/tree_borrows/mod.rs

@@ -469,7 +469,7 @@ trait EvalContextPrivExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
         // - if the pointer is not reborrowed (raw pointer) then we override the size
         //   to do a zero-length reborrow.
         let reborrow_size = this
-            .size_and_align_of_mplace(place)?
+            .size_and_align_of_val(place)?
             .map(|(size, _)| size)
             .unwrap_or(place.layout.size);
         trace!("Creating new permission: {:?} with size {:?}", new_perm, reborrow_size);

src/eval.rs

@@ -11,7 +11,7 @@ use rustc_abi::ExternAbi;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir::def::Namespace;
 use rustc_hir::def_id::DefId;
-use rustc_middle::ty::layout::{LayoutCx, LayoutOf};
+use rustc_middle::ty::layout::LayoutCx;
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_session::config::EntryFnType;
 

src/helpers.rs

@@ -489,7 +489,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
         trace!("visit_frozen(place={:?}, size={:?})", *place, size);
         debug_assert_eq!(
             size,
-            this.size_and_align_of_mplace(place)?
+            this.size_and_align_of_val(place)?
                 .map(|(size, _)| size)
                 .unwrap_or_else(|| place.layout.size)
         );
@@ -530,7 +530,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                     trace!("unsafe_cell_action on {:?}", place.ptr());
                     // We need a size to go on.
                     let unsafe_cell_size = this
-                        .size_and_align_of_mplace(place)?
+                        .size_and_align_of_val(place)?
                         .map(|(size, _)| size)
                         // for extern types, just cover what we can
                         .unwrap_or_else(|| place.layout.size);

src/intrinsics/simd.rs

@@ -3,7 +3,6 @@ use rand::Rng;
 use rustc_abi::{Endian, HasDataLayout};
 use rustc_apfloat::{Float, Round};
 use rustc_middle::ty::FloatTy;
-use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::{mir, ty};
 use rustc_span::{Symbol, sym};
 

src/shims/backtrace.rs

@@ -1,5 +1,4 @@
 use rustc_abi::{CanonAbi, FieldIdx, Size};
-use rustc_middle::ty::layout::LayoutOf as _;
 use rustc_middle::ty::{self, Instance, Ty};
 use rustc_span::{BytePos, Loc, Symbol, hygiene};
 use rustc_target::callconv::FnAbi;

src/shims/os_str.rs

@@ -7,7 +7,6 @@ use std::os::windows::ffi::{OsStrExt, OsStringExt};
 use std::path::{Path, PathBuf};
 
 use rustc_middle::ty::Ty;
-use rustc_middle::ty::layout::LayoutOf;
 
 use crate::*;
 

src/shims/unix/env.rs

@@ -6,7 +6,6 @@ use rustc_abi::{FieldIdx, Size};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_index::IndexVec;
 use rustc_middle::ty::Ty;
-use rustc_middle::ty::layout::LayoutOf;
 
 use crate::*;