Auto merge of #63640 - Centril:rollup-yeb8o66, r=Centril

Rollup of 10 pull requests

Successful merges:

 - #60492 (Add custom nth_back for Chain)
 - #61780 (Finalize the error type for `try_reserve`)
 - #63495 ( Remove redundant `ty` fields from `mir::Constant` and `hair::pattern::PatternRange`.)
 - #63525 (Make sure that all file loading happens via SourceMap)
 - #63595 (add sparc64-unknown-openbsd target)
 - #63604 (Some update for vxWorks)
 - #63613 (Hygienize use of built-in macros in the standard library)
 - #63632 (A couple of comment fixes.)
 - #63634 (ci: properly set the job name in CPU stats)
 - #63636 (ci: move linkcheck from mingw-2 to mingw-1)

Failed merges:

r? @ghost

2 files changed, 11 insertions, 27 deletions

diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs
index 3ded808bb35..4add2261c6c 100644
--- a/src/libsyntax_ext/lib.rs
+++ b/src/libsyntax_ext/lib.rs
@@ -57,7 +57,6 @@ pub fn register_builtin_macros(resolver: &mut dyn syntax::ext::base::Resolver, e
     }
 
     register_bang! {
-        __rust_unstable_column: source_util::expand_column,
         asm: asm::expand_asm,
         assert: assert::expand_assert,
         cfg: cfg::expand_cfg,
diff --git a/src/libsyntax_ext/source_util.rs b/src/libsyntax_ext/source_util.rs
index cbc01b48afd..e008ed710e4 100644
--- a/src/libsyntax_ext/source_util.rs
+++ b/src/libsyntax_ext/source_util.rs
@@ -9,8 +9,6 @@ use syntax::tokenstream;
 use smallvec::SmallVec;
 use syntax_pos::{self, Pos, Span};
 
-use std::fs;
-use std::io::ErrorKind;
 use rustc_data_structures::sync::Lrc;
 
 // These macros all relate to the file system; they either return
@@ -114,20 +112,17 @@ pub fn expand_include_str(cx: &mut ExtCtxt<'_>, sp: Span, tts: &[tokenstream::To
         None => return DummyResult::any(sp)
     };
     let file = cx.resolve_path(file, sp);
-    match fs::read_to_string(&file) {
-        Ok(src) => {
-            let interned_src = Symbol::intern(&src);
-
-            // Add this input file to the code map to make it available as
-            // dependency information
-            cx.source_map().new_source_file(file.into(), src);
-
-            base::MacEager::expr(cx.expr_str(sp, interned_src))
+    match cx.source_map().load_binary_file(&file) {
+        Ok(bytes) => match std::str::from_utf8(&bytes) {
+            Ok(src) => {
+                let interned_src = Symbol::intern(&src);
+                base::MacEager::expr(cx.expr_str(sp, interned_src))
+            }
+            Err(_) => {
+                cx.span_err(sp, &format!("{} wasn't a utf-8 file", file.display()));
+                DummyResult::any(sp)
+            }
         },
-        Err(ref e) if e.kind() == ErrorKind::InvalidData => {
-            cx.span_err(sp, &format!("{} wasn't a utf-8 file", file.display()));
-            DummyResult::any(sp)
-        }
         Err(e) => {
             cx.span_err(sp, &format!("couldn't read {}: {}", file.display(), e));
             DummyResult::any(sp)
@@ -142,18 +137,8 @@ pub fn expand_include_bytes(cx: &mut ExtCtxt<'_>, sp: Span, tts: &[tokenstream::
         None => return DummyResult::any(sp)
     };
     let file = cx.resolve_path(file, sp);
-    match fs::read(&file) {
+    match cx.source_map().load_binary_file(&file) {
         Ok(bytes) => {
-            // Add the contents to the source map if it contains UTF-8.
-            let (contents, bytes) = match String::from_utf8(bytes) {
-                Ok(s) => {
-                    let bytes = s.as_bytes().to_owned();
-                    (s, bytes)
-                },
-                Err(e) => (String::new(), e.into_bytes()),
-            };
-            cx.source_map().new_source_file(file.into(), contents);
-
             base::MacEager::expr(cx.expr_lit(sp, ast::LitKind::ByteStr(Lrc::new(bytes))))
         },
         Err(e) => {