1 use crate::interface::parse_cfgspecs;
3 use rustc_data_structures::fx::FxHashSet;
4 use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig};
5 use rustc_session::config::Strip;
6 use rustc_session::config::{build_configuration, build_session_options, to_crate_config};
7 use rustc_session::config::{rustc_optgroups, ErrorOutputType, ExternLocation, Options, Passes};
8 use rustc_session::config::{CFGuard, ExternEntry, LinkerPluginLto, LtoCli, SwitchWithOptPath};
9 use rustc_session::config::{
10 Externs, OutputType, OutputTypes, SanitizerSet, SymbolManglingVersion,
12 use rustc_session::lint::Level;
13 use rustc_session::search_paths::SearchPath;
14 use rustc_session::utils::NativeLibKind;
15 use rustc_session::{build_session, getopts, DiagnosticOutput, Session};
16 use rustc_span::edition::{Edition, DEFAULT_EDITION};
17 use rustc_span::symbol::sym;
18 use rustc_span::SourceFileHashAlgorithm;
19 use rustc_target::spec::{CodeModel, LinkerFlavor, MergeFunctions, PanicStrategy};
20 use rustc_target::spec::{RelocModel, RelroLevel, TlsModel};
21 use std::collections::{BTreeMap, BTreeSet};
22 use std::iter::FromIterator;
23 use std::path::PathBuf;
25 type CfgSpecs = FxHashSet<(String, Option<String>)>;
27 fn build_session_options_and_crate_config(matches: getopts::Matches) -> (Options, CfgSpecs) {
28 let sessopts = build_session_options(&matches);
29 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
33 fn mk_session(matches: getopts::Matches) -> (Session, CfgSpecs) {
34 let registry = registry::Registry::new(&[]);
35 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
36 let sess = build_session(
40 DiagnosticOutput::Default,
47 fn new_public_extern_entry<S, I>(locations: I) -> ExternEntry
50 I: IntoIterator<Item = S>,
52 let locations: BTreeSet<_> = locations.into_iter().map(|s| s.into()).collect();
55 location: ExternLocation::ExactPaths(locations),
56 is_private_dep: false,
61 fn optgroups() -> getopts::Options {
62 let mut opts = getopts::Options::new();
63 for group in rustc_optgroups() {
64 (group.apply)(&mut opts);
69 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
70 BTreeMap::from_iter(entries.into_iter())
73 // When the user supplies --test we should implicitly supply --cfg test
75 fn test_switch_implies_cfg_test() {
76 rustc_ast::with_default_session_globals(|| {
77 let matches = optgroups().parse(&["--test".to_string()]).unwrap();
78 let (sess, cfg) = mk_session(matches);
79 let cfg = build_configuration(&sess, to_crate_config(cfg));
80 assert!(cfg.contains(&(sym::test, None)));
84 // When the user supplies --test and --cfg test, don't implicitly add another --cfg test
86 fn test_switch_implies_cfg_test_unless_cfg_test() {
87 rustc_ast::with_default_session_globals(|| {
88 let matches = optgroups().parse(&["--test".to_string(), "--cfg=test".to_string()]).unwrap();
89 let (sess, cfg) = mk_session(matches);
90 let cfg = build_configuration(&sess, to_crate_config(cfg));
91 let mut test_items = cfg.iter().filter(|&&(name, _)| name == sym::test);
92 assert!(test_items.next().is_some());
93 assert!(test_items.next().is_none());
98 fn test_can_print_warnings() {
99 rustc_ast::with_default_session_globals(|| {
100 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
101 let (sess, _) = mk_session(matches);
102 assert!(!sess.diagnostic().can_emit_warnings());
105 rustc_ast::with_default_session_globals(|| {
107 optgroups().parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()]).unwrap();
108 let (sess, _) = mk_session(matches);
109 assert!(sess.diagnostic().can_emit_warnings());
112 rustc_ast::with_default_session_globals(|| {
113 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
114 let (sess, _) = mk_session(matches);
115 assert!(sess.diagnostic().can_emit_warnings());
120 fn test_output_types_tracking_hash_different_paths() {
121 let mut v1 = Options::default();
122 let mut v2 = Options::default();
123 let mut v3 = Options::default();
125 v1.output_types = OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
126 v2.output_types = OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
127 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
129 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
130 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
131 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
134 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
135 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
136 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
140 fn test_output_types_tracking_hash_different_construction_order() {
141 let mut v1 = Options::default();
142 let mut v2 = Options::default();
144 v1.output_types = OutputTypes::new(&[
145 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
146 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
149 v2.output_types = OutputTypes::new(&[
150 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
151 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
154 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
157 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
161 fn test_externs_tracking_hash_different_construction_order() {
162 let mut v1 = Options::default();
163 let mut v2 = Options::default();
164 let mut v3 = Options::default();
166 v1.externs = Externs::new(mk_map(vec![
167 (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
168 (String::from("d"), new_public_extern_entry(vec!["e", "f"])),
171 v2.externs = Externs::new(mk_map(vec![
172 (String::from("d"), new_public_extern_entry(vec!["e", "f"])),
173 (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
176 v3.externs = Externs::new(mk_map(vec![
177 (String::from("a"), new_public_extern_entry(vec!["b", "c"])),
178 (String::from("d"), new_public_extern_entry(vec!["f", "e"])),
181 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
182 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
183 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
186 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
187 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
188 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
192 fn test_lints_tracking_hash_different_values() {
193 let mut v1 = Options::default();
194 let mut v2 = Options::default();
195 let mut v3 = Options::default();
198 (String::from("a"), Level::Allow),
199 (String::from("b"), Level::Warn),
200 (String::from("c"), Level::Deny),
201 (String::from("d"), Level::Forbid),
205 (String::from("a"), Level::Allow),
206 (String::from("b"), Level::Warn),
207 (String::from("X"), Level::Deny),
208 (String::from("d"), Level::Forbid),
212 (String::from("a"), Level::Allow),
213 (String::from("b"), Level::Warn),
214 (String::from("c"), Level::Forbid),
215 (String::from("d"), Level::Deny),
218 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
219 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
220 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
223 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
224 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
225 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
229 fn test_lints_tracking_hash_different_construction_order() {
230 let mut v1 = Options::default();
231 let mut v2 = Options::default();
234 (String::from("a"), Level::Allow),
235 (String::from("b"), Level::Warn),
236 (String::from("c"), Level::Deny),
237 (String::from("d"), Level::Forbid),
241 (String::from("a"), Level::Allow),
242 (String::from("c"), Level::Deny),
243 (String::from("b"), Level::Warn),
244 (String::from("d"), Level::Forbid),
247 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
250 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
251 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
255 fn test_search_paths_tracking_hash_different_order() {
256 let mut v1 = Options::default();
257 let mut v2 = Options::default();
258 let mut v3 = Options::default();
259 let mut v4 = Options::default();
261 const JSON: ErrorOutputType = ErrorOutputType::Json {
263 json_rendered: HumanReadableErrorType::Default(ColorConfig::Never),
267 v1.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
268 v1.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
269 v1.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
270 v1.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
271 v1.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
273 v2.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
274 v2.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
275 v2.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
276 v2.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
277 v2.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
279 v3.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
280 v3.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
281 v3.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
282 v3.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
283 v3.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
285 v4.search_paths.push(SearchPath::from_cli_opt("all=mno", JSON));
286 v4.search_paths.push(SearchPath::from_cli_opt("native=abc", JSON));
287 v4.search_paths.push(SearchPath::from_cli_opt("crate=def", JSON));
288 v4.search_paths.push(SearchPath::from_cli_opt("dependency=ghi", JSON));
289 v4.search_paths.push(SearchPath::from_cli_opt("framework=jkl", JSON));
291 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
292 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
293 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
296 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
297 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
298 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
299 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
303 fn test_native_libs_tracking_hash_different_values() {
304 let mut v1 = Options::default();
305 let mut v2 = Options::default();
306 let mut v3 = Options::default();
307 let mut v4 = Options::default();
311 (String::from("a"), None, NativeLibKind::StaticBundle),
312 (String::from("b"), None, NativeLibKind::Framework),
313 (String::from("c"), None, NativeLibKind::Unspecified),
318 (String::from("a"), None, NativeLibKind::StaticBundle),
319 (String::from("X"), None, NativeLibKind::Framework),
320 (String::from("c"), None, NativeLibKind::Unspecified),
325 (String::from("a"), None, NativeLibKind::StaticBundle),
326 (String::from("b"), None, NativeLibKind::StaticBundle),
327 (String::from("c"), None, NativeLibKind::Unspecified),
332 (String::from("a"), None, NativeLibKind::StaticBundle),
333 (String::from("b"), Some(String::from("X")), NativeLibKind::Framework),
334 (String::from("c"), None, NativeLibKind::Unspecified),
337 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
338 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
339 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
342 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
343 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
344 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
345 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
349 fn test_native_libs_tracking_hash_different_order() {
350 let mut v1 = Options::default();
351 let mut v2 = Options::default();
352 let mut v3 = Options::default();
356 (String::from("a"), None, NativeLibKind::StaticBundle),
357 (String::from("b"), None, NativeLibKind::Framework),
358 (String::from("c"), None, NativeLibKind::Unspecified),
362 (String::from("b"), None, NativeLibKind::Framework),
363 (String::from("a"), None, NativeLibKind::StaticBundle),
364 (String::from("c"), None, NativeLibKind::Unspecified),
368 (String::from("c"), None, NativeLibKind::Unspecified),
369 (String::from("a"), None, NativeLibKind::StaticBundle),
370 (String::from("b"), None, NativeLibKind::Framework),
373 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
374 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
375 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
378 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
379 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
380 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
384 fn test_codegen_options_tracking_hash() {
385 let reference = Options::default();
386 let mut opts = Options::default();
388 macro_rules! untracked {
389 ($name: ident, $non_default_value: expr) => {
390 opts.cg.$name = $non_default_value;
391 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
395 // Make sure that changing an [UNTRACKED] option leaves the hash unchanged.
396 // This list is in alphabetical order.
397 untracked!(ar, String::from("abc"));
398 untracked!(codegen_units, Some(42));
399 untracked!(default_linker_libraries, true);
400 untracked!(extra_filename, String::from("extra-filename"));
401 untracked!(incremental, Some(String::from("abc")));
402 // `link_arg` is omitted because it just forwards to `link_args`.
403 untracked!(link_args, vec![String::from("abc"), String::from("def")]);
404 untracked!(link_dead_code, Some(true));
405 untracked!(linker, Some(PathBuf::from("linker")));
406 untracked!(linker_flavor, Some(LinkerFlavor::Gcc));
407 untracked!(no_stack_check, true);
408 untracked!(remark, Passes::Some(vec![String::from("pass1"), String::from("pass2")]));
409 untracked!(rpath, true);
410 untracked!(save_temps, true);
412 macro_rules! tracked {
413 ($name: ident, $non_default_value: expr) => {
414 opts = reference.clone();
415 opts.cg.$name = $non_default_value;
416 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
420 // Make sure that changing a [TRACKED] option changes the hash.
421 // This list is in alphabetical order.
422 tracked!(code_model, Some(CodeModel::Large));
423 tracked!(control_flow_guard, CFGuard::Checks);
424 tracked!(debug_assertions, Some(true));
425 tracked!(debuginfo, 0xdeadbeef);
426 tracked!(embed_bitcode, false);
427 tracked!(force_frame_pointers, Some(false));
428 tracked!(force_unwind_tables, Some(true));
429 tracked!(inline_threshold, Some(0xf007ba11));
430 tracked!(linker_plugin_lto, LinkerPluginLto::LinkerPluginAuto);
431 tracked!(llvm_args, vec![String::from("1"), String::from("2")]);
432 tracked!(lto, LtoCli::Fat);
433 tracked!(metadata, vec![String::from("A"), String::from("B")]);
434 tracked!(no_prepopulate_passes, true);
435 tracked!(no_redzone, Some(true));
436 tracked!(no_vectorize_loops, true);
437 tracked!(no_vectorize_slp, true);
438 tracked!(opt_level, "3".to_string());
439 tracked!(overflow_checks, Some(true));
440 tracked!(panic, Some(PanicStrategy::Abort));
441 tracked!(passes, vec![String::from("1"), String::from("2")]);
442 tracked!(prefer_dynamic, true);
443 tracked!(profile_generate, SwitchWithOptPath::Enabled(None));
444 tracked!(profile_use, Some(PathBuf::from("abc")));
445 tracked!(relocation_model, Some(RelocModel::Pic));
446 tracked!(soft_float, true);
447 tracked!(target_cpu, Some(String::from("abc")));
448 tracked!(target_feature, String::from("all the features, all of them"));
452 fn test_debugging_options_tracking_hash() {
453 let reference = Options::default();
454 let mut opts = Options::default();
456 macro_rules! untracked {
457 ($name: ident, $non_default_value: expr) => {
458 opts.debugging_opts.$name = $non_default_value;
459 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
463 // Make sure that changing an [UNTRACKED] option leaves the hash unchanged.
464 // This list is in alphabetical order.
465 untracked!(ast_json, true);
466 untracked!(ast_json_noexpand, true);
467 untracked!(borrowck, String::from("other"));
468 untracked!(borrowck_stats, true);
469 untracked!(deduplicate_diagnostics, true);
470 untracked!(dep_tasks, true);
471 untracked!(dont_buffer_diagnostics, true);
472 untracked!(dump_dep_graph, true);
473 untracked!(dump_mir, Some(String::from("abc")));
474 untracked!(dump_mir_dataflow, true);
475 untracked!(dump_mir_dir, String::from("abc"));
476 untracked!(dump_mir_exclude_pass_number, true);
477 untracked!(dump_mir_graphviz, true);
478 untracked!(emit_stack_sizes, true);
479 untracked!(hir_stats, true);
480 untracked!(identify_regions, true);
481 untracked!(incremental_ignore_spans, true);
482 untracked!(incremental_info, true);
483 untracked!(incremental_verify_ich, true);
484 untracked!(input_stats, true);
485 untracked!(keep_hygiene_data, true);
486 untracked!(link_native_libraries, false);
487 untracked!(llvm_time_trace, true);
488 untracked!(ls, true);
489 untracked!(macro_backtrace, true);
490 untracked!(meta_stats, true);
491 untracked!(nll_facts, true);
492 untracked!(no_analysis, true);
493 untracked!(no_interleave_lints, true);
494 untracked!(no_leak_check, true);
495 untracked!(no_parallel_llvm, true);
496 untracked!(parse_only, true);
497 untracked!(perf_stats, true);
498 untracked!(polonius, true);
499 // `pre_link_arg` is omitted because it just forwards to `pre_link_args`.
500 untracked!(pre_link_args, vec![String::from("abc"), String::from("def")]);
501 untracked!(print_link_args, true);
502 untracked!(print_llvm_passes, true);
503 untracked!(print_mono_items, Some(String::from("abc")));
504 untracked!(print_type_sizes, true);
505 untracked!(query_dep_graph, true);
506 untracked!(query_stats, true);
507 untracked!(save_analysis, true);
508 untracked!(self_profile, SwitchWithOptPath::Enabled(None));
509 untracked!(self_profile_events, Some(vec![String::new()]));
510 untracked!(span_debug, true);
511 untracked!(span_free_formats, true);
512 untracked!(strip, Strip::None);
513 untracked!(terminal_width, Some(80));
514 untracked!(threads, 99);
515 untracked!(time, true);
516 untracked!(time_llvm_passes, true);
517 untracked!(time_passes, true);
518 untracked!(trace_macros, true);
519 untracked!(ui_testing, true);
520 untracked!(unpretty, Some("expanded".to_string()));
521 untracked!(unstable_options, true);
522 untracked!(validate_mir, true);
523 untracked!(verbose, true);
525 macro_rules! tracked {
526 ($name: ident, $non_default_value: expr) => {
527 opts = reference.clone();
528 opts.debugging_opts.$name = $non_default_value;
529 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
533 // Make sure that changing a [TRACKED] option changes the hash.
534 // This list is in alphabetical order.
535 tracked!(allow_features, Some(vec![String::from("lang_items")]));
536 tracked!(always_encode_mir, true);
537 tracked!(asm_comments, true);
538 tracked!(binary_dep_depinfo, true);
539 tracked!(chalk, true);
540 tracked!(codegen_backend, Some("abc".to_string()));
541 tracked!(crate_attr, vec!["abc".to_string()]);
542 tracked!(debug_macros, true);
543 tracked!(dep_info_omit_d_target, true);
544 tracked!(dual_proc_macros, true);
545 tracked!(fewer_names, true);
546 tracked!(force_overflow_checks, Some(true));
547 tracked!(force_unstable_if_unmarked, true);
548 tracked!(fuel, Some(("abc".to_string(), 99)));
549 tracked!(human_readable_cgu_names, true);
550 tracked!(inline_in_all_cgus, Some(true));
551 tracked!(insert_sideeffect, true);
552 tracked!(instrument_coverage, true);
553 tracked!(instrument_mcount, true);
554 tracked!(link_only, true);
555 tracked!(merge_functions, Some(MergeFunctions::Disabled));
556 tracked!(mir_emit_retag, true);
557 tracked!(mir_opt_level, 3);
558 tracked!(mutable_noalias, true);
559 tracked!(new_llvm_pass_manager, true);
560 tracked!(no_codegen, true);
561 tracked!(no_generate_arange_section, true);
562 tracked!(no_link, true);
563 tracked!(no_profiler_runtime, true);
564 tracked!(osx_rpath_install_name, true);
565 tracked!(panic_abort_tests, true);
566 tracked!(plt, Some(true));
567 tracked!(print_fuel, Some("abc".to_string()));
568 tracked!(profile, true);
569 tracked!(profile_emit, Some(PathBuf::from("abc")));
570 tracked!(relro_level, Some(RelroLevel::Full));
571 tracked!(report_delayed_bugs, true);
572 tracked!(run_dsymutil, false);
573 tracked!(sanitizer, SanitizerSet::ADDRESS);
574 tracked!(sanitizer_memory_track_origins, 2);
575 tracked!(sanitizer_recover, SanitizerSet::ADDRESS);
576 tracked!(saturating_float_casts, Some(true));
577 tracked!(share_generics, Some(true));
578 tracked!(show_span, Some(String::from("abc")));
579 tracked!(src_hash_algorithm, Some(SourceFileHashAlgorithm::Sha1));
580 tracked!(symbol_mangling_version, SymbolManglingVersion::V0);
581 tracked!(teach, true);
582 tracked!(thinlto, Some(true));
583 tracked!(tls_model, Some(TlsModel::GeneralDynamic));
584 tracked!(treat_err_as_bug, Some(1));
585 tracked!(unleash_the_miri_inside_of_you, true);
586 tracked!(use_ctors_section, Some(true));
587 tracked!(verify_llvm_ir, true);
591 fn test_edition_parsing() {
592 // test default edition
593 let options = Options::default();
594 assert!(options.edition == DEFAULT_EDITION);
596 let matches = optgroups().parse(&["--edition=2018".to_string()]).unwrap();
597 let (sessopts, _) = build_session_options_and_crate_config(matches);
598 assert!(sessopts.edition == Edition::Edition2018)