compiler/rustc_interface/src/tests.rs

   1 use crate::interface::parse_cfgspecs;
   2
   3 use rustc_data_structures::fx::FxHashSet;
   4 use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig};
   5 use rustc_session::config::InstrumentCoverage;
   6 use rustc_session::config::Strip;
   7 use rustc_session::config::{build_configuration, build_session_options, to_crate_config};
   8 use rustc_session::config::{
   9     rustc_optgroups, ErrorOutputType, ExternLocation, LocationDetail, Options, Passes,
  10 };
  11 use rustc_session::config::{
  12     BranchProtection, Externs, OomStrategy, OutputType, OutputTypes, PAuthKey, PacRet,
  13     SymbolManglingVersion, WasiExecModel,
  14 };
  15 use rustc_session::config::{CFGuard, ExternEntry, LinkerPluginLto, LtoCli, SwitchWithOptPath};
  16 use rustc_session::lint::Level;
  17 use rustc_session::search_paths::SearchPath;
  18 use rustc_session::utils::{CanonicalizedPath, NativeLib, NativeLibKind};
  19 use rustc_session::{build_session, getopts, DiagnosticOutput, Session};
  20 use rustc_span::edition::{Edition, DEFAULT_EDITION};
  21 use rustc_span::symbol::sym;
  22 use rustc_span::SourceFileHashAlgorithm;
  23 use rustc_target::spec::{CodeModel, LinkerFlavor, MergeFunctions, PanicStrategy};
  24 use rustc_target::spec::{
  25     RelocModel, RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TlsModel,
  26 };
  27
  28 use std::collections::{BTreeMap, BTreeSet};
  29 use std::iter::FromIterator;
  30 use std::num::NonZeroUsize;
  31 use std::path::{Path, PathBuf};
  32
  33 type CfgSpecs = FxHashSet<(String, Option<String>)>;
  34
  35 fn build_session_options_and_crate_config(matches: getopts::Matches) -> (Options, CfgSpecs) {
  36     let sessopts = build_session_options(&matches);
  37     let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
  38     (sessopts, cfg)
  39 }
  40
  41 fn mk_session(matches: getopts::Matches) -> (Session, CfgSpecs) {
  42     let registry = registry::Registry::new(&[]);
  43     let (sessopts, cfg) = build_session_options_and_crate_config(matches);
  44     let sess = build_session(
  45         sessopts,
  46         None,
  47         None,
  48         registry,
  49         DiagnosticOutput::Default,
  50         Default::default(),
  51         None,
  52         None,
  53     );
  54     (sess, cfg)
  55 }
  56
  57 fn new_public_extern_entry<S, I>(locations: I) -> ExternEntry
  58 where
  59     S: Into<String>,
  60     I: IntoIterator<Item = S>,
  61 {
  62     let locations: BTreeSet<CanonicalizedPath> =
  63         locations.into_iter().map(|s| CanonicalizedPath::new(Path::new(&s.into()))).collect();
  64
  65     ExternEntry {
  66         location: ExternLocation::ExactPaths(locations),
  67         is_private_dep: false,
  68         add_prelude: true,
  69         nounused_dep: false,
  70     }
  71 }
  72
  73 fn optgroups() -> getopts::Options {
  74     let mut opts = getopts::Options::new();
  75     for group in rustc_optgroups() {
  76         (group.apply)(&mut opts);
  77     }
  78     return opts;
  79 }
  80
  81 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
  82     BTreeMap::from_iter(entries.into_iter())
  83 }
  84
  85 fn assert_same_clone(x: &Options) {
  86     assert_eq!(x.dep_tracking_hash(true), x.clone().dep_tracking_hash(true));
  87     assert_eq!(x.dep_tracking_hash(false), x.clone().dep_tracking_hash(false));
  88 }
  89
  90 fn assert_same_hash(x: &Options, y: &Options) {
  91     assert_eq!(x.dep_tracking_hash(true), y.dep_tracking_hash(true));
  92     assert_eq!(x.dep_tracking_hash(false), y.dep_tracking_hash(false));
  93     // Check clone
  94     assert_same_clone(x);
  95     assert_same_clone(y);
  96 }
  97
  98 fn assert_different_hash(x: &Options, y: &Options) {
  99     assert_ne!(x.dep_tracking_hash(true), y.dep_tracking_hash(true));
 100     assert_ne!(x.dep_tracking_hash(false), y.dep_tracking_hash(false));
 101     // Check clone
 102     assert_same_clone(x);
 103     assert_same_clone(y);
 104 }
 105
 106 fn assert_non_crate_hash_different(x: &Options, y: &Options) {
 107     assert_eq!(x.dep_tracking_hash(true), y.dep_tracking_hash(true));
 108     assert_ne!(x.dep_tracking_hash(false), y.dep_tracking_hash(false));
 109     // Check clone
 110     assert_same_clone(x);
 111     assert_same_clone(y);
 112 }
 113
 114 // When the user supplies --test we should implicitly supply --cfg test
 115 #[test]
 116 fn test_switch_implies_cfg_test() {
 117     rustc_span::create_default_session_globals_then(|| {
 118         let matches = optgroups().parse(&["--test".to_string()]).unwrap();
 119         let (sess, cfg) = mk_session(matches);
 120         let cfg = build_configuration(&sess, to_crate_config(cfg));
 121         assert!(cfg.contains(&(sym::test, None)));
 122     });
 123 }
 124
 125 // When the user supplies --test and --cfg test, don't implicitly add another --cfg test
 126 #[test]
 127 fn test_switch_implies_cfg_test_unless_cfg_test() {
 128     rustc_span::create_default_session_globals_then(|| {
 129         let matches = optgroups().parse(&["--test".to_string(), "--cfg=test".to_string()]).unwrap();
 130         let (sess, cfg) = mk_session(matches);
 131         let cfg = build_configuration(&sess, to_crate_config(cfg));
 132         let mut test_items = cfg.iter().filter(|&&(name, _)| name == sym::test);
 133         assert!(test_items.next().is_some());
 134         assert!(test_items.next().is_none());
 135     });
 136 }
 137
 138 #[test]
 139 fn test_can_print_warnings() {
 140     rustc_span::create_default_session_globals_then(|| {
 141         let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
 142         let (sess, _) = mk_session(matches);
 143         assert!(!sess.diagnostic().can_emit_warnings());
 144     });
 145
 146     rustc_span::create_default_session_globals_then(|| {
 147         let matches =
 148             optgroups().parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()]).unwrap();
 149         let (sess, _) = mk_session(matches);
 150         assert!(sess.diagnostic().can_emit_warnings());
 151     });
 152
 153     rustc_span::create_default_session_globals_then(|| {
 154         let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
 155         let (sess, _) = mk_session(matches);
 156         assert!(sess.diagnostic().can_emit_warnings());
 157     });
 158 }
 159
 160 #[test]
 161 fn test_output_types_tracking_hash_different_paths() {
 162     let mut v1 = Options::default();
 163     let mut v2 = Options::default();
 164     let mut v3 = Options::default();
 165
 166     v1.output_types = OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
 167     v2.output_types = OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
 168     v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
 169
 170     assert_non_crate_hash_different(&v1, &v2);
 171     assert_non_crate_hash_different(&v1, &v3);
 172     assert_non_crate_hash_different(&v2, &v3);
 173 }
 174
 175 #[test]
 176 fn test_output_types_tracking_hash_different_construction_order() {
 177     let mut v1 = Options::default();
 178     let mut v2 = Options::default();
 179
 180     v1.output_types = OutputTypes::new(&[
 181         (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
 182         (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
 183     ]);
 184
 185     v2.output_types = OutputTypes::new(&[
 186         (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
 187         (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
 188     ]);
 189
 190     assert_same_hash(&v1, &v2);
 191 }
 192
 193 #[test]
 194 fn test_externs_tracking_hash_different_construction_order() {
 195     let mut v1 = Options::default();
 196     let mut v2 = Options::default();
 197     let mut v3 = Options::default();
 198
 199     v1.externs = Externs::new(mk_map(vec![
 200         (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
 201         (String::from("d"), new_public_extern_entry(vec!["e", "f"])),
 202     ]));
 203
 204     v2.externs = Externs::new(mk_map(vec![
 205         (String::from("d"), new_public_extern_entry(vec!["e", "f"])),
 206         (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
 207     ]));
 208
 209     v3.externs = Externs::new(mk_map(vec![
 210         (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
 211         (String::from("d"), new_public_extern_entry(vec!["f", "e"])),
 212     ]));
 213
 214     assert_same_hash(&v1, &v2);
 215     assert_same_hash(&v1, &v3);
 216     assert_same_hash(&v2, &v3);
 217 }
 218
 219 #[test]
 220 fn test_lints_tracking_hash_different_values() {
 221     let mut v1 = Options::default();
 222     let mut v2 = Options::default();
 223     let mut v3 = Options::default();
 224
 225     v1.lint_opts = vec![
 226         (String::from("a"), Level::Allow),
 227         (String::from("b"), Level::Warn),
 228         (String::from("c"), Level::Deny),
 229         (String::from("d"), Level::Forbid),
 230     ];
 231
 232     v2.lint_opts = vec![
 233         (String::from("a"), Level::Allow),
 234         (String::from("b"), Level::Warn),
 235         (String::from("X"), Level::Deny),
 236         (String::from("d"), Level::Forbid),
 237     ];
 238
 239     v3.lint_opts = vec![
 240         (String::from("a"), Level::Allow),
 241         (String::from("b"), Level::Warn),
 242         (String::from("c"), Level::Forbid),
 243         (String::from("d"), Level::Deny),
 244     ];
 245
 246     assert_non_crate_hash_different(&v1, &v2);
 247     assert_non_crate_hash_different(&v1, &v3);
 248     assert_non_crate_hash_different(&v2, &v3);
 249 }
 250
 251 #[test]
 252 fn test_lints_tracking_hash_different_construction_order() {
 253     let mut v1 = Options::default();
 254     let mut v2 = Options::default();
 255
 256     v1.lint_opts = vec![
 257         (String::from("a"), Level::Allow),
 258         (String::from("b"), Level::Warn),
 259         (String::from("c"), Level::Deny),
 260         (String::from("d"), Level::Forbid),
 261     ];
 262
 263     v2.lint_opts = vec![
 264         (String::from("a"), Level::Allow),
 265         (String::from("c"), Level::Deny),
 266         (String::from("b"), Level::Warn),
 267         (String::from("d"), Level::Forbid),
 268     ];
 269
 270     // The hash should be order-dependent
 271     assert_non_crate_hash_different(&v1, &v2);
 272 }
 273
 274 #[test]
 275 fn test_lint_cap_hash_different() {
 276     let mut v1 = Options::default();
 277     let mut v2 = Options::default();
 278     let v3 = Options::default();
 279
 280     v1.lint_cap = Some(Level::Forbid);
 281     v2.lint_cap = Some(Level::Allow);
 282
 283     assert_non_crate_hash_different(&v1, &v2);
 284     assert_non_crate_hash_different(&v1, &v3);
 285     assert_non_crate_hash_different(&v2, &v3);
 286 }
 287
 288 #[test]
 289 fn test_search_paths_tracking_hash_different_order() {
 290     let mut v1 = Options::default();
 291     let mut v2 = Options::default();
 292     let mut v3 = Options::default();
 293     let mut v4 = Options::default();
 294
 295     const JSON: ErrorOutputType = ErrorOutputType::Json {
 296         pretty: false,
 297         json_rendered: HumanReadableErrorType::Default(ColorConfig::Never),
 298     };
 299
 300     // Reference
 301     v1.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
 302     v1.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
 303     v1.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
 304     v1.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
 305     v1.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
 306
 307     v2.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
 308     v2.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
 309     v2.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
 310     v2.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
 311     v2.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
 312
 313     v3.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
 314     v3.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
 315     v3.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
 316     v3.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
 317     v3.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
 318
 319     v4.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
 320     v4.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
 321     v4.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
 322     v4.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
 323     v4.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
 324
 325     assert_same_hash(&v1, &v2);
 326     assert_same_hash(&v1, &v3);
 327     assert_same_hash(&v1, &v4);
 328 }
 329
 330 #[test]
 331 fn test_native_libs_tracking_hash_different_values() {
 332     let mut v1 = Options::default();
 333     let mut v2 = Options::default();
 334     let mut v3 = Options::default();
 335     let mut v4 = Options::default();
 336     let mut v5 = Options::default();
 337
 338     // Reference
 339     v1.libs = vec![
 340         NativeLib {
 341             name: String::from("a"),
 342             new_name: None,
 343             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 344             verbatim: None,
 345         },
 346         NativeLib {
 347             name: String::from("b"),
 348             new_name: None,
 349             kind: NativeLibKind::Framework { as_needed: None },
 350             verbatim: None,
 351         },
 352         NativeLib {
 353             name: String::from("c"),
 354             new_name: None,
 355             kind: NativeLibKind::Unspecified,
 356             verbatim: None,
 357         },
 358     ];
 359
 360     // Change label
 361     v2.libs = vec![
 362         NativeLib {
 363             name: String::from("a"),
 364             new_name: None,
 365             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 366             verbatim: None,
 367         },
 368         NativeLib {
 369             name: String::from("X"),
 370             new_name: None,
 371             kind: NativeLibKind::Framework { as_needed: None },
 372             verbatim: None,
 373         },
 374         NativeLib {
 375             name: String::from("c"),
 376             new_name: None,
 377             kind: NativeLibKind::Unspecified,
 378             verbatim: None,
 379         },
 380     ];
 381
 382     // Change kind
 383     v3.libs = vec![
 384         NativeLib {
 385             name: String::from("a"),
 386             new_name: None,
 387             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 388             verbatim: None,
 389         },
 390         NativeLib {
 391             name: String::from("b"),
 392             new_name: None,
 393             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 394             verbatim: None,
 395         },
 396         NativeLib {
 397             name: String::from("c"),
 398             new_name: None,
 399             kind: NativeLibKind::Unspecified,
 400             verbatim: None,
 401         },
 402     ];
 403
 404     // Change new-name
 405     v4.libs = vec![
 406         NativeLib {
 407             name: String::from("a"),
 408             new_name: None,
 409             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 410             verbatim: None,
 411         },
 412         NativeLib {
 413             name: String::from("b"),
 414             new_name: Some(String::from("X")),
 415             kind: NativeLibKind::Framework { as_needed: None },
 416             verbatim: None,
 417         },
 418         NativeLib {
 419             name: String::from("c"),
 420             new_name: None,
 421             kind: NativeLibKind::Unspecified,
 422             verbatim: None,
 423         },
 424     ];
 425
 426     // Change verbatim
 427     v5.libs = vec![
 428         NativeLib {
 429             name: String::from("a"),
 430             new_name: None,
 431             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 432             verbatim: None,
 433         },
 434         NativeLib {
 435             name: String::from("b"),
 436             new_name: None,
 437             kind: NativeLibKind::Framework { as_needed: None },
 438             verbatim: Some(true),
 439         },
 440         NativeLib {
 441             name: String::from("c"),
 442             new_name: None,
 443             kind: NativeLibKind::Unspecified,
 444             verbatim: None,
 445         },
 446     ];
 447
 448     assert_different_hash(&v1, &v2);
 449     assert_different_hash(&v1, &v3);
 450     assert_different_hash(&v1, &v4);
 451     assert_different_hash(&v1, &v5);
 452 }
 453
 454 #[test]
 455 fn test_native_libs_tracking_hash_different_order() {
 456     let mut v1 = Options::default();
 457     let mut v2 = Options::default();
 458     let mut v3 = Options::default();
 459
 460     // Reference
 461     v1.libs = vec![
 462         NativeLib {
 463             name: String::from("a"),
 464             new_name: None,
 465             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 466             verbatim: None,
 467         },
 468         NativeLib {
 469             name: String::from("b"),
 470             new_name: None,
 471             kind: NativeLibKind::Framework { as_needed: None },
 472             verbatim: None,
 473         },
 474         NativeLib {
 475             name: String::from("c"),
 476             new_name: None,
 477             kind: NativeLibKind::Unspecified,
 478             verbatim: None,
 479         },
 480     ];
 481
 482     v2.libs = vec![
 483         NativeLib {
 484             name: String::from("b"),
 485             new_name: None,
 486             kind: NativeLibKind::Framework { as_needed: None },
 487             verbatim: None,
 488         },
 489         NativeLib {
 490             name: String::from("a"),
 491             new_name: None,
 492             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 493             verbatim: None,
 494         },
 495         NativeLib {
 496             name: String::from("c"),
 497             new_name: None,
 498             kind: NativeLibKind::Unspecified,
 499             verbatim: None,
 500         },
 501     ];
 502
 503     v3.libs = vec![
 504         NativeLib {
 505             name: String::from("c"),
 506             new_name: None,
 507             kind: NativeLibKind::Unspecified,
 508             verbatim: None,
 509         },
 510         NativeLib {
 511             name: String::from("a"),
 512             new_name: None,
 513             kind: NativeLibKind::Static { bundle: None, whole_archive: None },
 514             verbatim: None,
 515         },
 516         NativeLib {
 517             name: String::from("b"),
 518             new_name: None,
 519             kind: NativeLibKind::Framework { as_needed: None },
 520             verbatim: None,
 521         },
 522     ];
 523
 524     // The hash should be order-dependent
 525     assert_different_hash(&v1, &v2);
 526     assert_different_hash(&v1, &v3);
 527     assert_different_hash(&v2, &v3);
 528 }
 529
 530 #[test]
 531 fn test_codegen_options_tracking_hash() {
 532     let reference = Options::default();
 533     let mut opts = Options::default();
 534
 535     macro_rules! untracked {
 536         ($name: ident, $non_default_value: expr) => {
 537             assert_ne!(opts.cg.$name, $non_default_value);
 538             opts.cg.$name = $non_default_value;
 539             assert_same_hash(&reference, &opts);
 540         };
 541     }
 542
 543     // Make sure that changing an [UNTRACKED] option leaves the hash unchanged.
 544     // This list is in alphabetical order.
 545     untracked!(ar, String::from("abc"));
 546     untracked!(codegen_units, Some(42));
 547     untracked!(default_linker_libraries, true);
 548     untracked!(extra_filename, String::from("extra-filename"));
 549     untracked!(incremental, Some(String::from("abc")));
 550     // `link_arg` is omitted because it just forwards to `link_args`.
 551     untracked!(link_args, vec![String::from("abc"), String::from("def")]);
 552     untracked!(link_self_contained, Some(true));
 553     untracked!(linker, Some(PathBuf::from("linker")));
 554     untracked!(linker_flavor, Some(LinkerFlavor::Gcc));
 555     untracked!(no_stack_check, true);
 556     untracked!(remark, Passes::Some(vec![String::from("pass1"), String::from("pass2")]));
 557     untracked!(rpath, true);
 558     untracked!(save_temps, true);
 559     untracked!(strip, Strip::Debuginfo);
 560
 561     macro_rules! tracked {
 562         ($name: ident, $non_default_value: expr) => {
 563             opts = reference.clone();
 564             assert_ne!(opts.cg.$name, $non_default_value);
 565             opts.cg.$name = $non_default_value;
 566             assert_different_hash(&reference, &opts);
 567         };
 568     }
 569
 570     // Make sure that changing a [TRACKED] option changes the hash.
 571     // This list is in alphabetical order.
 572     tracked!(code_model, Some(CodeModel::Large));
 573     tracked!(control_flow_guard, CFGuard::Checks);
 574     tracked!(debug_assertions, Some(true));
 575     tracked!(debuginfo, 0xdeadbeef);
 576     tracked!(embed_bitcode, false);
 577     tracked!(force_frame_pointers, Some(false));
 578     tracked!(force_unwind_tables, Some(true));
 579     tracked!(inline_threshold, Some(0xf007ba11));
 580     tracked!(instrument_coverage, Some(InstrumentCoverage::All));
 581     tracked!(linker_plugin_lto, LinkerPluginLto::LinkerPluginAuto);
 582     tracked!(link_dead_code, Some(true));
 583     tracked!(llvm_args, vec![String::from("1"), String::from("2")]);
 584     tracked!(lto, LtoCli::Fat);
 585     tracked!(metadata, vec![String::from("A"), String::from("B")]);
 586     tracked!(no_prepopulate_passes, true);
 587     tracked!(no_redzone, Some(true));
 588     tracked!(no_vectorize_loops, true);
 589     tracked!(no_vectorize_slp, true);
 590     tracked!(opt_level, "3".to_string());
 591     tracked!(overflow_checks, Some(true));
 592     tracked!(panic, Some(PanicStrategy::Abort));
 593     tracked!(passes, vec![String::from("1"), String::from("2")]);
 594     tracked!(prefer_dynamic, true);
 595     tracked!(profile_generate, SwitchWithOptPath::Enabled(None));
 596     tracked!(profile_use, Some(PathBuf::from("abc")));
 597     tracked!(relocation_model, Some(RelocModel::Pic));
 598     tracked!(soft_float, true);
 599     tracked!(split_debuginfo, Some(SplitDebuginfo::Packed));
 600     tracked!(symbol_mangling_version, Some(SymbolManglingVersion::V0));
 601     tracked!(target_cpu, Some(String::from("abc")));
 602     tracked!(target_feature, String::from("all the features, all of them"));
 603 }
 604
 605 #[test]
 606 fn test_top_level_options_tracked_no_crate() {
 607     let reference = Options::default();
 608     let mut opts;
 609
 610     macro_rules! tracked {
 611         ($name: ident, $non_default_value: expr) => {
 612             opts = reference.clone();
 613             assert_ne!(opts.$name, $non_default_value);
 614             opts.$name = $non_default_value;
 615             // The crate hash should be the same
 616             assert_eq!(reference.dep_tracking_hash(true), opts.dep_tracking_hash(true));
 617             // The incremental hash should be different
 618             assert_ne!(reference.dep_tracking_hash(false), opts.dep_tracking_hash(false));
 619         };
 620     }
 621
 622     // Make sure that changing a [TRACKED_NO_CRATE_HASH] option leaves the crate hash unchanged but changes the incremental hash.
 623     // This list is in alphabetical order.
 624     tracked!(remap_path_prefix, vec![("/home/bors/rust".into(), "src".into())]);
 625     tracked!(
 626         real_rust_source_base_dir,
 627         Some("/home/bors/rust/.rustup/toolchains/nightly/lib/rustlib/src/rust".into())
 628     );
 629 }
 630
 631 #[test]
 632 fn test_debugging_options_tracking_hash() {
 633     let reference = Options::default();
 634     let mut opts = Options::default();
 635
 636     macro_rules! untracked {
 637         ($name: ident, $non_default_value: expr) => {
 638             assert_ne!(opts.debugging_opts.$name, $non_default_value);
 639             opts.debugging_opts.$name = $non_default_value;
 640             assert_same_hash(&reference, &opts);
 641         };
 642     }
 643
 644     // Make sure that changing an [UNTRACKED] option leaves the hash unchanged.
 645     // This list is in alphabetical order.
 646     untracked!(assert_incr_state, Some(String::from("loaded")));
 647     untracked!(deduplicate_diagnostics, false);
 648     untracked!(dep_tasks, true);
 649     untracked!(dlltool, Some(PathBuf::from("custom_dlltool.exe")));
 650     untracked!(dont_buffer_diagnostics, true);
 651     untracked!(dump_dep_graph, true);
 652     untracked!(dump_mir, Some(String::from("abc")));
 653     untracked!(dump_mir_dataflow, true);
 654     untracked!(dump_mir_dir, String::from("abc"));
 655     untracked!(dump_mir_exclude_pass_number, true);
 656     untracked!(dump_mir_graphviz, true);
 657     untracked!(emit_stack_sizes, true);
 658     untracked!(future_incompat_test, true);
 659     untracked!(hir_stats, true);
 660     untracked!(identify_regions, true);
 661     untracked!(incremental_ignore_spans, true);
 662     untracked!(incremental_info, true);
 663     untracked!(incremental_verify_ich, true);
 664     untracked!(input_stats, true);
 665     untracked!(keep_hygiene_data, true);
 666     untracked!(link_native_libraries, false);
 667     untracked!(llvm_time_trace, true);
 668     untracked!(ls, true);
 669     untracked!(macro_backtrace, true);
 670     untracked!(meta_stats, true);
 671     untracked!(nll_facts, true);
 672     untracked!(no_analysis, true);
 673     untracked!(no_interleave_lints, true);
 674     untracked!(no_leak_check, true);
 675     untracked!(no_parallel_llvm, true);
 676     untracked!(parse_only, true);
 677     untracked!(perf_stats, true);
 678     // `pre_link_arg` is omitted because it just forwards to `pre_link_args`.
 679     untracked!(pre_link_args, vec![String::from("abc"), String::from("def")]);
 680     untracked!(profile_closures, true);
 681     untracked!(print_llvm_passes, true);
 682     untracked!(print_mono_items, Some(String::from("abc")));
 683     untracked!(print_type_sizes, true);
 684     untracked!(proc_macro_backtrace, true);
 685     untracked!(query_dep_graph, true);
 686     untracked!(save_analysis, true);
 687     untracked!(self_profile, SwitchWithOptPath::Enabled(None));
 688     untracked!(self_profile_events, Some(vec![String::new()]));
 689     untracked!(span_debug, true);
 690     untracked!(span_free_formats, true);
 691     untracked!(temps_dir, Some(String::from("abc")));
 692     untracked!(terminal_width, Some(80));
 693     untracked!(threads, 99);
 694     untracked!(time, true);
 695     untracked!(time_llvm_passes, true);
 696     untracked!(time_passes, true);
 697     untracked!(trace_macros, true);
 698     untracked!(trim_diagnostic_paths, false);
 699     untracked!(ui_testing, true);
 700     untracked!(unpretty, Some("expanded".to_string()));
 701     untracked!(unstable_options, true);
 702     untracked!(validate_mir, true);
 703     untracked!(verbose, true);
 704
 705     macro_rules! tracked {
 706         ($name: ident, $non_default_value: expr) => {
 707             opts = reference.clone();
 708             assert_ne!(opts.debugging_opts.$name, $non_default_value);
 709             opts.debugging_opts.$name = $non_default_value;
 710             assert_different_hash(&reference, &opts);
 711         };
 712     }
 713
 714     // Make sure that changing a [TRACKED] option changes the hash.
 715     // This list is in alphabetical order.
 716     tracked!(allow_features, Some(vec![String::from("lang_items")]));
 717     tracked!(always_encode_mir, true);
 718     tracked!(asm_comments, true);
 719     tracked!(assume_incomplete_release, true);
 720     tracked!(binary_dep_depinfo, true);
 721     tracked!(
 722         branch_protection,
 723         Some(BranchProtection {
 724             bti: true,
 725             pac_ret: Some(PacRet { leaf: true, key: PAuthKey::B })
 726         })
 727     );
 728     tracked!(chalk, true);
 729     tracked!(codegen_backend, Some("abc".to_string()));
 730     tracked!(crate_attr, vec!["abc".to_string()]);
 731     tracked!(debug_info_for_profiling, true);
 732     tracked!(debug_macros, true);
 733     tracked!(dep_info_omit_d_target, true);
 734     tracked!(drop_tracking, true);
 735     tracked!(dual_proc_macros, true);
 736     tracked!(fewer_names, Some(true));
 737     tracked!(force_unstable_if_unmarked, true);
 738     tracked!(fuel, Some(("abc".to_string(), 99)));
 739     tracked!(function_sections, Some(false));
 740     tracked!(human_readable_cgu_names, true);
 741     tracked!(inline_in_all_cgus, Some(true));
 742     tracked!(inline_mir, Some(true));
 743     tracked!(inline_mir_hint_threshold, Some(123));
 744     tracked!(inline_mir_threshold, Some(123));
 745     tracked!(instrument_coverage, Some(InstrumentCoverage::All));
 746     tracked!(instrument_mcount, true);
 747     tracked!(link_only, true);
 748     tracked!(llvm_plugins, vec![String::from("plugin_name")]);
 749     tracked!(location_detail, LocationDetail { file: true, line: false, column: false });
 750     tracked!(merge_functions, Some(MergeFunctions::Disabled));
 751     tracked!(mir_emit_retag, true);
 752     tracked!(mir_enable_passes, vec![("DestProp".to_string(), false)]);
 753     tracked!(mir_opt_level, Some(4));
 754     tracked!(move_size_limit, Some(4096));
 755     tracked!(mutable_noalias, Some(true));
 756     tracked!(new_llvm_pass_manager, Some(true));
 757     tracked!(no_generate_arange_section, true);
 758     tracked!(no_link, true);
 759     tracked!(no_unique_section_names, true);
 760     tracked!(no_profiler_runtime, true);
 761     tracked!(oom, OomStrategy::Panic);
 762     tracked!(osx_rpath_install_name, true);
 763     tracked!(panic_abort_tests, true);
 764     tracked!(panic_in_drop, PanicStrategy::Abort);
 765     tracked!(pick_stable_methods_before_any_unstable, false);
 766     tracked!(plt, Some(true));
 767     tracked!(polonius, true);
 768     tracked!(precise_enum_drop_elaboration, false);
 769     tracked!(print_fuel, Some("abc".to_string()));
 770     tracked!(profile, true);
 771     tracked!(profile_emit, Some(PathBuf::from("abc")));
 772     tracked!(profiler_runtime, "abc".to_string());
 773     tracked!(profile_sample_use, Some(PathBuf::from("abc")));
 774     tracked!(relax_elf_relocations, Some(true));
 775     tracked!(relro_level, Some(RelroLevel::Full));
 776     tracked!(remap_cwd_prefix, Some(PathBuf::from("abc")));
 777     tracked!(report_delayed_bugs, true);
 778     tracked!(sanitizer, SanitizerSet::ADDRESS);
 779     tracked!(sanitizer_memory_track_origins, 2);
 780     tracked!(sanitizer_recover, SanitizerSet::ADDRESS);
 781     tracked!(saturating_float_casts, Some(true));
 782     tracked!(share_generics, Some(true));
 783     tracked!(show_span, Some(String::from("abc")));
 784     tracked!(simulate_remapped_rust_src_base, Some(PathBuf::from("/rustc/abc")));
 785     tracked!(src_hash_algorithm, Some(SourceFileHashAlgorithm::Sha1));
 786     tracked!(stack_protector, StackProtector::All);
 787     tracked!(symbol_mangling_version, Some(SymbolManglingVersion::V0));
 788     tracked!(teach, true);
 789     tracked!(thinlto, Some(true));
 790     tracked!(thir_unsafeck, true);
 791     tracked!(tls_model, Some(TlsModel::GeneralDynamic));
 792     tracked!(translate_remapped_path_to_local_path, false);
 793     tracked!(trap_unreachable, Some(false));
 794     tracked!(treat_err_as_bug, NonZeroUsize::new(1));
 795     tracked!(tune_cpu, Some(String::from("abc")));
 796     tracked!(uninit_const_chunk_threshold, 123);
 797     tracked!(unleash_the_miri_inside_of_you, true);
 798     tracked!(use_ctors_section, Some(true));
 799     tracked!(verify_llvm_ir, true);
 800     tracked!(virtual_function_elimination, true);
 801     tracked!(wasi_exec_model, Some(WasiExecModel::Reactor));
 802
 803     macro_rules! tracked_no_crate_hash {
 804         ($name: ident, $non_default_value: expr) => {
 805             opts = reference.clone();
 806             assert_ne!(opts.debugging_opts.$name, $non_default_value);
 807             opts.debugging_opts.$name = $non_default_value;
 808             assert_non_crate_hash_different(&reference, &opts);
 809         };
 810     }
 811     tracked_no_crate_hash!(no_codegen, true);
 812 }
 813
 814 #[test]
 815 fn test_edition_parsing() {
 816     // test default edition
 817     let options = Options::default();
 818     assert!(options.edition == DEFAULT_EDITION);
 819
 820     let matches = optgroups().parse(&["--edition=2018".to_string()]).unwrap();
 821     let (sessopts, _) = build_session_options_and_crate_config(matches);
 822     assert!(sessopts.edition == Edition::Edition2018)
 823 }