From 5363f350887b1e5b5dd21a86f88c8af9d7fea6da Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:25 +0200
Subject: Merging upstream version 1.67.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 compiler/rustc_lint/src/types.rs | 51 +++++++++++++++++++---------------------
 1 file changed, 24 insertions(+), 27 deletions(-)

(limited to 'compiler/rustc_lint/src/types.rs')

diff --git a/compiler/rustc_lint/src/types.rs b/compiler/rustc_lint/src/types.rs
index 37caab2da..297b509d4 100644
--- a/compiler/rustc_lint/src/types.rs
+++ b/compiler/rustc_lint/src/types.rs
@@ -12,7 +12,7 @@ use rustc_middle::ty::{self, AdtKind, DefIdTree, Ty, TyCtxt, TypeSuperVisitable,
 use rustc_span::source_map;
 use rustc_span::symbol::sym;
 use rustc_span::{Span, Symbol};
-use rustc_target::abi::{Abi, WrappingRange};
+use rustc_target::abi::{Abi, Size, WrappingRange};
 use rustc_target::abi::{Integer, TagEncoding, Variants};
 use rustc_target::spec::abi::Abi as SpecAbi;
 
@@ -225,11 +225,11 @@ fn report_bin_hex_error(
     cx: &LateContext<'_>,
     expr: &hir::Expr<'_>,
     ty: attr::IntType,
+    size: Size,
     repr_str: String,
     val: u128,
     negative: bool,
 ) {
-    let size = Integer::from_attr(&cx.tcx, ty).size();
     cx.struct_span_lint(
         OVERFLOWING_LITERALS,
         expr.span,
@@ -352,6 +352,7 @@ fn lint_int_literal<'tcx>(
                 cx,
                 e,
                 attr::IntType::SignedInt(ty::ast_int_ty(t)),
+                Integer::from_int_ty(cx, t).size(),
                 repr_str,
                 v,
                 negative,
@@ -360,7 +361,7 @@ fn lint_int_literal<'tcx>(
         }
 
         if lint_overflowing_range_endpoint(cx, lit, v, max, e, t.name_str()) {
-            // The overflowing literal lint was emited by `lint_overflowing_range_endpoint`.
+            // The overflowing literal lint was emitted by `lint_overflowing_range_endpoint`.
             return;
         }
 
@@ -429,7 +430,7 @@ fn lint_uint_literal<'tcx>(
             }
         }
         if lint_overflowing_range_endpoint(cx, lit, lit_val, max, e, t.name_str()) {
-            // The overflowing literal lint was emited by `lint_overflowing_range_endpoint`.
+            // The overflowing literal lint was emitted by `lint_overflowing_range_endpoint`.
             return;
         }
         if let Some(repr_str) = get_bin_hex_repr(cx, lit) {
@@ -437,6 +438,7 @@ fn lint_uint_literal<'tcx>(
                 cx,
                 e,
                 attr::IntType::UnsignedInt(ty::ast_uint_ty(t)),
+                Integer::from_uint_ty(cx, t).size(),
                 repr_str,
                 lit_val,
                 false,
@@ -1195,35 +1197,30 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
     }
 
     fn check_for_opaque_ty(&mut self, sp: Span, ty: Ty<'tcx>) -> bool {
-        struct ProhibitOpaqueTypes<'a, 'tcx> {
-            cx: &'a LateContext<'tcx>,
-        }
-
-        impl<'a, 'tcx> ty::visit::TypeVisitor<'tcx> for ProhibitOpaqueTypes<'a, 'tcx> {
+        struct ProhibitOpaqueTypes;
+        impl<'tcx> ty::visit::TypeVisitor<'tcx> for ProhibitOpaqueTypes {
             type BreakTy = Ty<'tcx>;
 
             fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
-                match ty.kind() {
-                    ty::Opaque(..) => ControlFlow::Break(ty),
-                    // Consider opaque types within projections FFI-safe if they do not normalize
-                    // to more opaque types.
-                    ty::Projection(..) => {
-                        let ty = self.cx.tcx.normalize_erasing_regions(self.cx.param_env, ty);
-
-                        // If `ty` is an opaque type directly then `super_visit_with` won't invoke
-                        // this function again.
-                        if ty.has_opaque_types() {
-                            self.visit_ty(ty)
-                        } else {
-                            ControlFlow::CONTINUE
-                        }
-                    }
-                    _ => ty.super_visit_with(self),
+                if !ty.has_opaque_types() {
+                    return ControlFlow::CONTINUE;
+                }
+
+                if let ty::Opaque(..) = ty.kind() {
+                    ControlFlow::Break(ty)
+                } else {
+                    ty.super_visit_with(self)
                 }
             }
         }
 
-        if let Some(ty) = ty.visit_with(&mut ProhibitOpaqueTypes { cx: self.cx }).break_value() {
+        if let Some(ty) = self
+            .cx
+            .tcx
+            .normalize_erasing_regions(self.cx.param_env, ty)
+            .visit_with(&mut ProhibitOpaqueTypes)
+            .break_value()
+        {
             self.emit_ffi_unsafe_type_lint(ty, sp, fluent::lint_improper_ctypes_opaque, None);
             true
         } else {
@@ -1381,7 +1378,7 @@ impl<'tcx> LateLintPass<'tcx> for VariantSizeDifferences {
             let (largest, slargest, largest_index) = iter::zip(enum_definition.variants, variants)
                 .map(|(variant, variant_layout)| {
                     // Subtract the size of the enum tag.
-                    let bytes = variant_layout.size().bytes().saturating_sub(tag_size);
+                    let bytes = variant_layout.size.bytes().saturating_sub(tag_size);
 
                     debug!("- variant `{}` is {} bytes large", variant.ident, bytes);
                     bytes
-- 
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