Add support for a new attribute `#[debugger_visualizer]` to support embedding debugger visualizers into a generated PDB.

Cleanup `DebuggerVisualizerFile` type and other minor cleanup of queries.

Merge the queries for debugger visualizers into a single query.

Revert move of `resolve_path` to `rustc_builtin_macros`. Update dependencies in Cargo.toml for `rustc_passes`.

Respond to PR comments. Load visualizer files into opaque bytes `Vec<u8>`. Debugger visualizers for dynamically linked crates should not be embedded in the current crate.

Update the unstable book with the new feature. Add the tracking issue for the debugger_visualizer feature.

Respond to PR comments and minor cleanups.

6 files changed, 42 insertions, 0 deletions

diff --git a/src/test/ui/feature-gates/feature-gate-debugger-visualizer.rs b/src/test/ui/feature-gates/feature-gate-debugger-visualizer.rs
new file mode 100644
index 00000000000..3f9eb27a0d6
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-debugger-visualizer.rs
@@ -0,0 +1,3 @@
+#![debugger_visualizer(natvis_file = "../foo.natvis")] //~ ERROR the `#[debugger_visualizer]` attribute is an experimental feature
+
+fn main() {}
diff --git a/src/test/ui/feature-gates/feature-gate-debugger-visualizer.stderr b/src/test/ui/feature-gates/feature-gate-debugger-visualizer.stderr
new file mode 100644
index 00000000000..721b2b185da
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-debugger-visualizer.stderr
@@ -0,0 +1,12 @@
+error[E0658]: the `#[debugger_visualizer]` attribute is an experimental feature
+  --> $DIR/feature-gate-debugger-visualizer.rs:1:1
+   |
+LL | #![debugger_visualizer(natvis_file = "../foo.natvis")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #95939 <https://github.com/rust-lang/rust/issues/95939> for more information
+   = help: add `#![feature(debugger_visualizer)]` to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/invalid/invalid-debugger-visualizer-option.rs b/src/test/ui/invalid/invalid-debugger-visualizer-option.rs
new file mode 100644
index 00000000000..5332298f0ef
--- /dev/null
+++ b/src/test/ui/invalid/invalid-debugger-visualizer-option.rs
@@ -0,0 +1,4 @@
+#![feature(debugger_visualizer)]
+#![debugger_visualizer(random_file = "../foo.random")] //~ ERROR invalid argument
+
+fn main() {}
diff --git a/src/test/ui/invalid/invalid-debugger-visualizer-option.stderr b/src/test/ui/invalid/invalid-debugger-visualizer-option.stderr
new file mode 100644
index 00000000000..24ad9361fe3
--- /dev/null
+++ b/src/test/ui/invalid/invalid-debugger-visualizer-option.stderr
@@ -0,0 +1,10 @@
+error: invalid argument
+  --> $DIR/invalid-debugger-visualizer-option.rs:2:1
+   |
+LL | #![debugger_visualizer(random_file = "../foo.random")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: expected: `natvis_file = "..."`
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/invalid/invalid-debugger-visualizer-target.rs b/src/test/ui/invalid/invalid-debugger-visualizer-target.rs
new file mode 100644
index 00000000000..7668d092e61
--- /dev/null
+++ b/src/test/ui/invalid/invalid-debugger-visualizer-target.rs
@@ -0,0 +1,5 @@
+#![feature(debugger_visualizer)]
+
+#[debugger_visualizer(natvis_file = "../foo.natvis")] //~ ERROR attribute should be applied to a module
+
+fn main() {}
diff --git a/src/test/ui/invalid/invalid-debugger-visualizer-target.stderr b/src/test/ui/invalid/invalid-debugger-visualizer-target.stderr
new file mode 100644
index 00000000000..3555bbb169b
--- /dev/null
+++ b/src/test/ui/invalid/invalid-debugger-visualizer-target.stderr
@@ -0,0 +1,8 @@
+error: attribute should be applied to a module
+  --> $DIR/invalid-debugger-visualizer-target.rs:3:1
+   |
+LL | #[debugger_visualizer(natvis_file = "../foo.natvis")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+