Experiment: Move natvis files from src/etc/natvis to debugger_visualizer attributes

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -1,5 +1,5 @@
 use std::ffi::{OsStr, OsString};
-use std::fs::{self, File};
+use std::fs::File;
 use std::io::prelude::*;
 use std::path::{Path, PathBuf};
 use std::{env, iter, mem, str};
@@ -1098,26 +1098,6 @@ impl<'a> Linker for MsvcLinker<'a> {
         // `-Clink-arg=/PDBALTPATH:...` to rustc.
         self.link_arg("/PDBALTPATH:%_PDB%");
 
-        // This will cause the Microsoft linker to embed .natvis info into the PDB file
-        let natvis_dir_path = self.sess.opts.sysroot.path().join("lib\\rustlib\\etc");
-        if let Ok(natvis_dir) = fs::read_dir(&natvis_dir_path) {
-            for entry in natvis_dir {
-                match entry {
-                    Ok(entry) => {
-                        let path = entry.path();
-                        if path.extension() == Some("natvis".as_ref()) {
-                            let mut arg = OsString::from("/NATVIS:");
-                            arg.push(path);
-                            self.link_arg(arg);
-                        }
-                    }
-                    Err(error) => {
-                        self.sess.dcx().emit_warn(errors::NoNatvisDirectory { error });
-                    }
-                }
-            }
-        }
-
         // This will cause the Microsoft linker to embed .natvis info for all crates into the PDB file
         for path in natvis_debugger_visualizers {
             let mut arg = OsString::from("/NATVIS:");

compiler/rustc_codegen_ssa/src/errors.rs

@@ -100,12 +100,6 @@ pub(crate) struct LinkerUnsupportedModifier;
 #[diag("exporting symbols not implemented yet for L4Bender")]
 pub(crate) struct L4BenderExportingSymbolsUnimplemented;
 
-#[derive(Diagnostic)]
-#[diag("error enumerating natvis directory: {$error}")]
-pub(crate) struct NoNatvisDirectory {
-    pub error: Error,
-}
-
 #[derive(Diagnostic)]
 #[diag("cached cgu {$cgu_name} should have an object file, but doesn't")]
 pub(crate) struct NoSavedObjectFile<'a> {

library/alloc/src/lib.rs

@@ -60,6 +60,7 @@
 #![allow(incomplete_features)]
 #![allow(unused_attributes)]
 #![stable(feature = "alloc", since = "1.36.0")]
+#![debugger_visualizer(natvis_file = "../alloc.natvis")]
 #![doc(
     html_playground_url = "https://play.rust-lang.org/",
     issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",

library/core/src/lib.rs

@@ -44,6 +44,8 @@
 //!   called. The `lang` attribute is called `eh_personality`.
 
 #![stable(feature = "core", since = "1.6.0")]
+#![debugger_visualizer(natvis_file = "../core.natvis")]
+#![debugger_visualizer(natvis_file = "../intrinsic.natvis")]
 #![doc(
     html_playground_url = "https://play.rust-lang.org/",
     issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",

library/std/src/lib.rs

@@ -214,6 +214,7 @@
 //! [slice]: prim@slice
 
 #![cfg_attr(not(restricted_std), stable(feature = "rust1", since = "1.0.0"))]
+#![debugger_visualizer(natvis_file = "../std.natvis")]
 #![cfg_attr(
     restricted_std,
     unstable(

src/bootstrap/src/core/build_steps/dist.rs

@@ -726,11 +726,6 @@ impl Step for DebuggerScripts {
                 &sysroot.join("bin"),
                 FileType::Script,
             );
-
-            cp_debugger_script("natvis/intrinsic.natvis");
-            cp_debugger_script("natvis/liballoc.natvis");
-            cp_debugger_script("natvis/libcore.natvis");
-            cp_debugger_script("natvis/libstd.natvis");
         }
 
         cp_debugger_script("rust_types.py");

src/tools/compiletest/src/lib.rs

@@ -707,8 +707,6 @@ fn common_inputs_stamp(config: &Config) -> Stamp {
         stamp.add_path(&path);
     }
 
-    stamp.add_dir(&src_root.join("src/etc/natvis"));
-
     stamp.add_dir(&config.target_run_lib_path);
 
     if let Some(ref rustdoc_path) = config.rustdoc_path {