Auto merge of #90188 - matthiaskrgr:rollup-74cwv5c, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #83233 (Implement split_array and split_array_mut)
 - #88300 (Stabilise unix_process_wait_more, extra ExitStatusExt methods)
 - #89416 (nice_region_error: Include lifetime placeholders in error output)
 - #89468 (Report fatal lexer errors in `--cfg` command line arguments)
 - #89730 (add feature flag for `type_changing_struct_update`)
 - #89920 (Implement -Z location-detail flag)
 - #90070 (Add edition configuration to compiletest)
 - #90087 (Sync rustfmt subtree)
 - #90117 (Make RSplit<T, P>: Clone not require T: Clone)
 - #90122 (CI: make docker cache download and `docker load` time out after 10 minutes)
 - #90166 (Add comment documenting why we can't use a simpler solution)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

2 files changed, 8 insertions, 2 deletions

diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs
index 0861bd290df..81585f8f4e4 100644
--- a/compiler/rustc_interface/src/interface.rs
+++ b/compiler/rustc_interface/src/interface.rs
@@ -75,7 +75,10 @@ pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> FxHashSet<(String, Option<String
         let cfg = cfgspecs
             .into_iter()
             .map(|s| {
-                let sess = ParseSess::with_silent_emitter();
+                let sess = ParseSess::with_silent_emitter(Some(format!(
+                    "this error occurred on the command line: `--cfg={}`",
+                    s
+                )));
                 let filename = FileName::cfg_spec_source_code(&s);
                 let mut parser = new_parser_from_source_str(&sess, filename, s.to_string());
 
diff --git a/compiler/rustc_interface/src/tests.rs b/compiler/rustc_interface/src/tests.rs
index 844e5ab56a4..dab4d485e2d 100644
--- a/compiler/rustc_interface/src/tests.rs
+++ b/compiler/rustc_interface/src/tests.rs
@@ -5,7 +5,9 @@ use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig};
 use rustc_session::config::InstrumentCoverage;
 use rustc_session::config::Strip;
 use rustc_session::config::{build_configuration, build_session_options, to_crate_config};
-use rustc_session::config::{rustc_optgroups, ErrorOutputType, ExternLocation, Options, Passes};
+use rustc_session::config::{
+    rustc_optgroups, ErrorOutputType, ExternLocation, LocationDetail, Options, Passes,
+};
 use rustc_session::config::{CFGuard, ExternEntry, LinkerPluginLto, LtoCli, SwitchWithOptPath};
 use rustc_session::config::{
     Externs, OutputType, OutputTypes, SymbolManglingVersion, WasiExecModel,
@@ -733,6 +735,7 @@ fn test_debugging_options_tracking_hash() {
     tracked!(instrument_mcount, true);
     tracked!(link_only, true);
     tracked!(llvm_plugins, vec![String::from("plugin_name")]);
+    tracked!(location_detail, LocationDetail { file: true, line: false, column: false });
     tracked!(merge_functions, Some(MergeFunctions::Disabled));
     tracked!(mir_emit_retag, true);
     tracked!(mir_opt_level, Some(4));