Auto merge of #116818 - Nilstrieb:stop-submitting-bug-reports, r=wesleywiser

Stop telling people to submit bugs for internal feature ICEs

This keeps track of usage of internal features, and changes the message to instead tell them that using internal features is not supported.

I thought about several ways to do this but now used the explicit threading of an `Arc<AtomicBool>` through `Session`. This is not exactly incremental-safe, but this is fine, as this is set during macro expansion, which is pre-incremental, and also only affects the output of ICEs, at which point incremental correctness doesn't matter much anyways.

See [MCP 620.](rust-lang/compiler-team#596)

![image](https://github.com/rust-lang/rust/assets/48135649/be661f05-b78a-40a9-b01d-81ad2dbdb690)

Author: bors

src/bin/miri.rs

@@ -241,6 +241,7 @@ fn run_compiler(
     mut args: Vec<String>,
     target_crate: bool,
     callbacks: &mut (dyn rustc_driver::Callbacks + Send),
+    using_internal_features: std::sync::Arc<std::sync::atomic::AtomicBool>
 ) -> ! {
     if target_crate {
         // Miri needs a custom sysroot for target crates.
@@ -273,7 +274,8 @@ fn run_compiler(
 
     // Invoke compiler, and handle return code.
     let exit_code = rustc_driver::catch_with_exit_code(move || {
-        rustc_driver::RunCompiler::new(&args, callbacks).run()
+        rustc_driver::RunCompiler::new(&args, callbacks)
+            .set_using_internal_features(using_internal_features).run()
     });
     std::process::exit(exit_code)
 }
@@ -295,7 +297,7 @@ fn main() {
     // If the environment asks us to actually be rustc, then do that.
     if let Some(crate_kind) = env::var_os("MIRI_BE_RUSTC") {
         // Earliest rustc setup.
-        rustc_driver::install_ice_hook(rustc_driver::DEFAULT_BUG_REPORT_URL, |_| ());
+        let using_internal_features = rustc_driver::install_ice_hook(rustc_driver::DEFAULT_BUG_REPORT_URL, |_| ());
         rustc_driver::init_rustc_env_logger(&handler);
 
         let target_crate = if crate_kind == "target" {
@@ -311,11 +313,12 @@ fn main() {
             env::args().collect(),
             target_crate,
             &mut MiriBeRustCompilerCalls { target_crate },
+            using_internal_features,
         )
     }
 
     // Add an ICE bug report hook.
-    rustc_driver::install_ice_hook("https://github.com/rust-lang/miri/issues/new", |_| ());
+    let using_internal_features = rustc_driver::install_ice_hook("https://github.com/rust-lang/miri/issues/new", |_| ());
 
     // Init loggers the Miri way.
     init_early_loggers(&handler);
@@ -578,5 +581,5 @@ fn main() {
 
     debug!("rustc arguments: {:?}", rustc_args);
     debug!("crate arguments: {:?}", miri_config.args);
-    run_compiler(rustc_args, /* target_crate: */ true, &mut MiriCompilerCalls { miri_config })
+    run_compiler(rustc_args, /* target_crate: */ true, &mut MiriCompilerCalls { miri_config }, using_internal_features)
 }