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_codegen_gcc/src/consts.rs | 31 ++++++++-----------------------
 1 file changed, 8 insertions(+), 23 deletions(-)

(limited to 'compiler/rustc_codegen_gcc/src/consts.rs')

diff --git a/compiler/rustc_codegen_gcc/src/consts.rs b/compiler/rustc_codegen_gcc/src/consts.rs
index 81f533288..ea8ab7611 100644
--- a/compiler/rustc_codegen_gcc/src/consts.rs
+++ b/compiler/rustc_codegen_gcc/src/consts.rs
@@ -8,13 +8,11 @@ use rustc_middle::mir::mono::MonoItem;
 use rustc_middle::ty::{self, Instance, Ty};
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::mir::interpret::{self, ConstAllocation, ErrorHandled, Scalar as InterpScalar, read_target_uint};
-use rustc_span::Span;
 use rustc_span::def_id::DefId;
 use rustc_target::abi::{self, Align, HasDataLayout, Primitive, Size, WrappingRange};
 
 use crate::base;
 use crate::context::CodegenCx;
-use crate::errors::LinkageConstOrMutType;
 use crate::type_of::LayoutGccExt;
 
 impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
@@ -239,12 +237,12 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
                     }
 
                     Node::ForeignItem(&hir::ForeignItem {
-                        span,
+                        span: _,
                         kind: hir::ForeignItemKind::Static(..),
                         ..
                     }) => {
                         let fn_attrs = self.tcx.codegen_fn_attrs(def_id);
-                        check_and_apply_linkage(&self, &fn_attrs, ty, sym, span)
+                        check_and_apply_linkage(&self, &fn_attrs, ty, sym)
                     }
 
                     item => bug!("get_static: expected static, found {:?}", item),
@@ -257,8 +255,7 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
                 //debug!("get_static: sym={} item_attr={:?}", sym, self.tcx.item_attrs(def_id));
 
                 let attrs = self.tcx.codegen_fn_attrs(def_id);
-                let span = self.tcx.def_span(def_id);
-                let global = check_and_apply_linkage(&self, &attrs, ty, sym, span);
+                let global = check_and_apply_linkage(&self, &attrs, ty, sym);
 
                 let needs_dll_storage_attr = false; // TODO(antoyo)
 
@@ -297,12 +294,12 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
 
 pub fn const_alloc_to_gcc<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, alloc: ConstAllocation<'tcx>) -> RValue<'gcc> {
     let alloc = alloc.inner();
-    let mut llvals = Vec::with_capacity(alloc.provenance().len() + 1);
+    let mut llvals = Vec::with_capacity(alloc.provenance().ptrs().len() + 1);
     let dl = cx.data_layout();
     let pointer_size = dl.pointer_size.bytes() as usize;
 
     let mut next_offset = 0;
-    for &(offset, alloc_id) in alloc.provenance().iter() {
+    for &(offset, alloc_id) in alloc.provenance().ptrs().iter() {
         let offset = offset.bytes();
         assert_eq!(offset as usize as u64, offset);
         let offset = offset as usize;
@@ -355,24 +352,12 @@ pub fn codegen_static_initializer<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, def_id
     Ok((const_alloc_to_gcc(cx, alloc), alloc))
 }
 
-fn check_and_apply_linkage<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, attrs: &CodegenFnAttrs, ty: Ty<'tcx>, sym: &str, span: Span) -> LValue<'gcc> {
+fn check_and_apply_linkage<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, attrs: &CodegenFnAttrs, ty: Ty<'tcx>, sym: &str) -> LValue<'gcc> {
     let is_tls = attrs.flags.contains(CodegenFnAttrFlags::THREAD_LOCAL);
     let llty = cx.layout_of(ty).gcc_type(cx, true);
-    if let Some(linkage) = attrs.linkage {
-        // If this is a static with a linkage specified, then we need to handle
-        // it a little specially. The typesystem prevents things like &T and
-        // extern "C" fn() from being non-null, so we can't just declare a
-        // static and call it a day. Some linkages (like weak) will make it such
-        // that the static actually has a null value.
-        let llty2 =
-            if let ty::RawPtr(ref mt) = ty.kind() {
-                cx.layout_of(mt.ty).gcc_type(cx, true)
-            }
-            else {
-                cx.sess().emit_fatal(LinkageConstOrMutType { span: span })
-            };
+    if let Some(linkage) = attrs.import_linkage {
         // Declare a symbol `foo` with the desired linkage.
-        let global1 = cx.declare_global_with_linkage(&sym, llty2, base::global_linkage_to_gcc(linkage));
+        let global1 = cx.declare_global_with_linkage(&sym, cx.type_i8(), base::global_linkage_to_gcc(linkage));
 
         // Declare an internal global `extern_with_linkage_foo` which
         // is initialized with the address of `foo`.  If `foo` is
-- 
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