diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs index 762430c618721..b103c7de74c14 100644 --- a/compiler/rustc_codegen_ssa/src/back/link.rs +++ b/compiler/rustc_codegen_ssa/src/back/link.rs @@ -377,12 +377,8 @@ fn link_rlib<'a>( find_native_static_library(name.as_str(), lib.verbatim, &lib_search_paths, sess); if sess.opts.unstable_opts.packed_bundled_libs && flavor == RlibFlavor::Normal { let filename = lib.filename.unwrap(); - let lib_path = find_native_static_library( - filename.as_str(), - Some(true), - &lib_search_paths, - sess, - ); + let lib_path = + find_native_static_library(filename.as_str(), true, &lib_search_paths, sess); let src = read(lib_path) .map_err(|e| sess.emit_fatal(errors::ReadFileError { message: e }))?; let (data, _) = create_wrapper_file(sess, b".bundled_lib".to_vec(), &src); @@ -465,7 +461,7 @@ fn collate_raw_dylibs<'a, 'b>( for lib in used_libraries { if lib.kind == NativeLibKind::RawDylib { - let ext = if matches!(lib.verbatim, Some(true)) { "" } else { ".dll" }; + let ext = if lib.verbatim { "" } else { ".dll" }; let name = format!("{}{}", lib.name.expect("unnamed raw-dylib library"), ext); let imports = dylib_table.entry(name.clone()).or_default(); for import in &lib.dll_imports { @@ -1335,7 +1331,7 @@ fn print_native_static_libs(sess: &Session, all_native_libs: &[NativeLib]) { NativeLibKind::Static { bundle: Some(false), .. } | NativeLibKind::Dylib { .. } | NativeLibKind::Unspecified => { - let verbatim = lib.verbatim.unwrap_or(false); + let verbatim = lib.verbatim; if sess.target.is_like_msvc { Some(format!("{}{}", name, if verbatim { "" } else { ".lib" })) } else if sess.target.linker_flavor.is_gnu() { @@ -2306,7 +2302,7 @@ fn add_native_libs_from_crate( _ => &codegen_results.crate_info.native_libraries[&cnum], }; - let mut last = (None, NativeLibKind::Unspecified, None); + let mut last = (None, NativeLibKind::Unspecified, false); for lib in native_libs { let Some(name) = lib.name else { continue; @@ -2323,7 +2319,7 @@ fn add_native_libs_from_crate( }; let name = name.as_str(); - let verbatim = lib.verbatim.unwrap_or(false); + let verbatim = lib.verbatim; match lib.kind { NativeLibKind::Static { bundle, whole_archive } => { if link_static { diff --git a/compiler/rustc_codegen_ssa/src/back/linker.rs b/compiler/rustc_codegen_ssa/src/back/linker.rs index 7f0c2861f7e29..5fb11e6b914b8 100644 --- a/compiler/rustc_codegen_ssa/src/back/linker.rs +++ b/compiler/rustc_codegen_ssa/src/back/linker.rs @@ -515,7 +515,7 @@ impl<'a> Linker for GccLinker<'a> { // -force_load is the macOS equivalent of --whole-archive, but it // involves passing the full path to the library to link. self.linker_arg("-force_load"); - let lib = find_native_static_library(lib, Some(verbatim), search_path, &self.sess); + let lib = find_native_static_library(lib, verbatim, search_path, &self.sess); self.linker_arg(&lib); } } diff --git a/compiler/rustc_codegen_ssa/src/lib.rs b/compiler/rustc_codegen_ssa/src/lib.rs index ade33b6c77728..def6390f6a36b 100644 --- a/compiler/rustc_codegen_ssa/src/lib.rs +++ b/compiler/rustc_codegen_ssa/src/lib.rs @@ -116,7 +116,7 @@ pub struct NativeLib { pub name: Option, pub filename: Option, pub cfg: Option, - pub verbatim: Option, + pub verbatim: bool, pub dll_imports: Vec, } @@ -127,7 +127,7 @@ impl From<&cstore::NativeLib> for NativeLib { filename: lib.filename, name: lib.name, cfg: lib.cfg.clone(), - verbatim: lib.verbatim, + verbatim: lib.verbatim.unwrap_or(false), dll_imports: lib.dll_imports.clone(), } } diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs index 1646727a1c85f..7678ce323dfbc 100644 --- a/compiler/rustc_feature/src/accepted.rs +++ b/compiler/rustc_feature/src/accepted.rs @@ -237,6 +237,8 @@ declare_features! ( (accepted, native_link_modifiers, "1.61.0", Some(81490), None), /// Allows specifying the bundle link modifier (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490), None), + /// Allows specifying the verbatim link modifier + (accepted, native_link_modifiers_verbatim, "CURRENT_RUSTC_VERSION", Some(81490), None), /// Allows specifying the whole-archive link modifier (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490), None), /// Allows using non lexical lifetimes (RFC 2094). diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index 9ca63c393c623..69c5297bf6b82 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -455,8 +455,6 @@ declare_features! ( (active, naked_functions, "1.9.0", Some(32408), None), /// Allows specifying the as-needed link modifier (active, native_link_modifiers_as_needed, "1.53.0", Some(81490), None), - /// Allows specifying the verbatim link modifier - (active, native_link_modifiers_verbatim, "1.53.0", Some(81490), None), /// Allow negative trait implementations. (active, negative_impls, "1.44.0", Some(68318), None), /// Allows the `!` type. Does not imply 'exhaustive_patterns' (below) any more. diff --git a/compiler/rustc_metadata/src/native_libs.rs b/compiler/rustc_metadata/src/native_libs.rs index 20a2e78299aed..1fd35adf1bd2c 100644 --- a/compiler/rustc_metadata/src/native_libs.rs +++ b/compiler/rustc_metadata/src/native_libs.rs @@ -29,11 +29,11 @@ use std::path::PathBuf; pub fn find_native_static_library( name: &str, - verbatim: Option, + verbatim: bool, search_paths: &[PathBuf], sess: &Session, ) -> PathBuf { - let formats = if verbatim.unwrap_or(false) { + let formats = if verbatim { vec![("".into(), "".into())] } else { let os = (sess.target.staticlib_prefix.clone(), sess.target.staticlib_suffix.clone()); @@ -52,7 +52,7 @@ pub fn find_native_static_library( } } - sess.emit_fatal(MissingNativeLibrary::new(name, verbatim.unwrap_or(false))); + sess.emit_fatal(MissingNativeLibrary::new(name, verbatim)); } fn find_bundled_library( @@ -66,7 +66,7 @@ fn find_bundled_library( let NativeLibKind::Static { bundle: Some(true) | None, .. } = kind { find_native_static_library( name.unwrap().as_str(), - verbatim, + verbatim.unwrap_or(false), &sess.target_filesearch(PathKind::Native).search_path_dirs(), sess, ).file_name().and_then(|s| s.to_str()).map(Symbol::intern) @@ -311,10 +311,7 @@ impl<'tcx> Collector<'tcx> { sess.emit_err(BundleNeedsStatic { span }); } - ("verbatim", _) => { - report_unstable_modifier!(native_link_modifiers_verbatim); - assign_modifier(&mut verbatim) - } + ("verbatim", _) => assign_modifier(&mut verbatim), ("whole-archive", Some(NativeLibKind::Static { whole_archive, .. })) => { assign_modifier(whole_archive) diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index 3b1b33aa095a1..927810351e958 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -2029,10 +2029,7 @@ fn parse_native_lib_modifiers( "linking modifier `bundle` is only compatible with `static` linking kind", ), - ("verbatim", _) => { - report_unstable_modifier(); - assign_modifier(&mut verbatim) - } + ("verbatim", _) => assign_modifier(&mut verbatim), ("whole-archive", NativeLibKind::Static { whole_archive, .. }) => { assign_modifier(whole_archive) diff --git a/src/doc/rustc/src/command-line-arguments.md b/src/doc/rustc/src/command-line-arguments.md index 2dc182b3d83ed..ef6eee75f1ce6 100644 --- a/src/doc/rustc/src/command-line-arguments.md +++ b/src/doc/rustc/src/command-line-arguments.md @@ -104,6 +104,33 @@ This modifier has no effect when building other targets like executables or dyna The default for this modifier is `+bundle`. +### Linking modifiers: `verbatim` + +This modifier is compatible with all linking kinds. + +`+verbatim` means that rustc itself won't add any target-specified library prefixes or suffixes +(like `lib` or `.a`) to the library name, and will try its best to ask for the same thing from the +linker. + +For `ld`-like linkers supporting GNU extensions rustc will use the `-l:filename` syntax (note the +colon) when passing the library, so the linker won't add any prefixes or suffixes to it. +See [`-l namespec`](https://sourceware.org/binutils/docs/ld/Options.html) in ld documentation for +more details. \ +For linkers not supporting any verbatim modifiers (e.g. `link.exe` or `ld64`) the library name will +be passed as is. So the most reliable cross-platform use scenarios for this option are when no +linker is involved, for example bundling native libraries into rlibs. + +`-verbatim` means that rustc will either add a target-specific prefix and suffix to the library +name before passing it to linker, or won't prevent linker from implicitly adding it. \ +In case of `raw-dylib` kind in particular `.dll` will be added to the library name on Windows. + +The default for this modifier is `-verbatim`. + +NOTE: Even with `+verbatim` and `-l:filename` syntax `ld`-like linkers do not typically support +passing absolute paths to libraries. Usually such paths need to be passed as input files without +using any options like `-l`, e.g. `ld /my/absolute/path`. \ +`-Clink-arg=/my/absolute/path` can be used for doing this from stable `rustc`. + ## `--crate-type`: a list of types of crates for the compiler to emit diff --git a/src/doc/unstable-book/src/language-features/native-link-modifiers-verbatim.md b/src/doc/unstable-book/src/language-features/native-link-modifiers-verbatim.md deleted file mode 100644 index 02bd87e50956d..0000000000000 --- a/src/doc/unstable-book/src/language-features/native-link-modifiers-verbatim.md +++ /dev/null @@ -1,20 +0,0 @@ -# `native_link_modifiers_verbatim` - -The tracking issue for this feature is: [#81490] - -[#81490]: https://github.com/rust-lang/rust/issues/81490 - ------------------------- - -The `native_link_modifiers_verbatim` feature allows you to use the `verbatim` modifier. - -`+verbatim` means that rustc itself won't add any target-specified library prefixes or suffixes (like `lib` or `.a`) to the library name, and will try its best to ask for the same thing from the linker. - -For `ld`-like linkers rustc will use the `-l:filename` syntax (note the colon) when passing the library, so the linker won't add any prefixes or suffixes as well. -See [`-l namespec`](https://sourceware.org/binutils/docs/ld/Options.html) in ld documentation for more details. -For linkers not supporting any verbatim modifiers (e.g. `link.exe` or `ld64`) the library name will be passed as is. - -The default for this modifier is `-verbatim`. - -This RFC changes the behavior of `raw-dylib` linking kind specified by [RFC 2627](https://github.com/rust-lang/rfcs/pull/2627). The `.dll` suffix (or other target-specified suffixes for other targets) is now added automatically. -If your DLL doesn't have the `.dll` suffix, it can be specified with `+verbatim`. diff --git a/src/test/run-make/native-link-modifier-verbatim-linker/Makefile b/src/test/run-make/native-link-modifier-verbatim-linker/Makefile index e56e1e94ec5b1..666e4084ce295 100644 --- a/src/test/run-make/native-link-modifier-verbatim-linker/Makefile +++ b/src/test/run-make/native-link-modifier-verbatim-linker/Makefile @@ -6,10 +6,10 @@ include ../../run-make-fulldeps/tools.mk all: # Verbatim allows specify precise name. $(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_some_strange_name.ext - $(RUSTC) main.rs -Zunstable-options -l static:+verbatim=local_some_strange_name.ext + $(RUSTC) main.rs -l static:+verbatim=local_some_strange_name.ext # With verbatim any other name cannot be used (local). $(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/liblocal_native_dep.a $(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_native_dep.a $(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_native_dep.lib - $(RUSTC) main.rs -Zunstable-options -l static:+verbatim=local_native_dep 2>&1 | $(CGREP) "local_native_dep" + $(RUSTC) main.rs -l static:+verbatim=local_native_dep 2>&1 | $(CGREP) "local_native_dep" diff --git a/src/test/run-make/native-link-modifier-verbatim-rustc/Makefile b/src/test/run-make/native-link-modifier-verbatim-rustc/Makefile index 1093b1cd3694d..6f01f37804a2a 100644 --- a/src/test/run-make/native-link-modifier-verbatim-rustc/Makefile +++ b/src/test/run-make/native-link-modifier-verbatim-rustc/Makefile @@ -3,10 +3,10 @@ include ../../run-make-fulldeps/tools.mk all: # Verbatim allows specify precise name. $(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_some_strange_name.ext - $(RUSTC) rust_dep.rs -Zunstable-options -l static:+verbatim=upstream_some_strange_name.ext --crate-type rlib + $(RUSTC) rust_dep.rs -l static:+verbatim=upstream_some_strange_name.ext --crate-type rlib # With verbatim any other name cannot be used (upstream). $(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/libupstream_native_dep.a $(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_native_dep.a $(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_native_dep.lib - $(RUSTC) rust_dep.rs -Zunstable-options -l static:+verbatim=upstream_native_dep --crate-type rlib 2>&1 | $(CGREP) "upstream_native_dep" + $(RUSTC) rust_dep.rs -l static:+verbatim=upstream_native_dep --crate-type rlib 2>&1 | $(CGREP) "upstream_native_dep" diff --git a/src/test/run-make/raw-dylib-c/lib.rs b/src/test/run-make/raw-dylib-c/lib.rs index 005ffcdda5c2e..5fb1204037c93 100644 --- a/src/test/run-make/raw-dylib-c/lib.rs +++ b/src/test/run-make/raw-dylib-c/lib.rs @@ -1,4 +1,4 @@ -#![feature(raw_dylib, native_link_modifiers_verbatim)] +#![feature(raw_dylib)] #[link(name = "extern_1.dll", kind = "raw-dylib", modifiers = "+verbatim")] extern { diff --git a/src/test/run-make/rlib-format-packed-bundled-libs-2/rust_dep.rs b/src/test/run-make/rlib-format-packed-bundled-libs-2/rust_dep.rs index d99dda05cf215..77e41e237d42a 100644 --- a/src/test/run-make/rlib-format-packed-bundled-libs-2/rust_dep.rs +++ b/src/test/run-make/rlib-format-packed-bundled-libs-2/rust_dep.rs @@ -1,4 +1,3 @@ -#![feature(native_link_modifiers_verbatim)] #[link(name = "native_dep.ext", kind = "static", modifiers = "+verbatim")] extern "C" { fn native_f1() -> i32; diff --git a/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.rs b/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.rs deleted file mode 100644 index 7b09195dc3fb0..0000000000000 --- a/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.rs +++ /dev/null @@ -1,5 +0,0 @@ -#[link(name = "foo", modifiers = "+verbatim")] -//~^ ERROR: linking modifier `verbatim` is unstable -extern "C" {} - -fn main() {} diff --git a/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.stderr b/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.stderr deleted file mode 100644 index 3bfbeb8db35fe..0000000000000 --- a/src/test/ui/feature-gates/feature-gate-native_link_modifiers_verbatim.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0658]: linking modifier `verbatim` is unstable - --> $DIR/feature-gate-native_link_modifiers_verbatim.rs:1:34 - | -LL | #[link(name = "foo", modifiers = "+verbatim")] - | ^^^^^^^^^^^ - | - = note: see issue #81490 for more information - = help: add `#![feature(native_link_modifiers_verbatim)]` 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/linkage-attr/link-attr-validation-late.rs b/src/test/ui/linkage-attr/link-attr-validation-late.rs index b454fbd0ed117..34f720dd2d3c5 100644 --- a/src/test/ui/linkage-attr/link-attr-validation-late.rs +++ b/src/test/ui/linkage-attr/link-attr-validation-late.rs @@ -1,4 +1,3 @@ -#![feature(native_link_modifiers_verbatim)] #![feature(link_cfg)] // Top-level ill-formed diff --git a/src/test/ui/linkage-attr/link-attr-validation-late.stderr b/src/test/ui/linkage-attr/link-attr-validation-late.stderr index dd0f1dba2ecf7..1ad5fbaf7de80 100644 --- a/src/test/ui/linkage-attr/link-attr-validation-late.stderr +++ b/src/test/ui/linkage-attr/link-attr-validation-late.stderr @@ -1,143 +1,143 @@ error: unexpected `#[link]` argument, expected one of: name, kind, modifiers, cfg, wasm_import_module, import_name_type - --> $DIR/link-attr-validation-late.rs:5:22 + --> $DIR/link-attr-validation-late.rs:4:22 | LL | #[link(name = "...", "literal")] | ^^^^^^^^^ error: unexpected `#[link]` argument, expected one of: name, kind, modifiers, cfg, wasm_import_module, import_name_type - --> $DIR/link-attr-validation-late.rs:6:22 + --> $DIR/link-attr-validation-late.rs:5:22 | LL | #[link(name = "...", unknown)] | ^^^^^^^ error: multiple `name` arguments in a single `#[link]` attribute - --> $DIR/link-attr-validation-late.rs:10:22 + --> $DIR/link-attr-validation-late.rs:9:22 | LL | #[link(name = "foo", name = "bar")] | ^^^^^^^^^^^^ error: multiple `kind` arguments in a single `#[link]` attribute - --> $DIR/link-attr-validation-late.rs:11:38 + --> $DIR/link-attr-validation-late.rs:10:38 | LL | #[link(name = "...", kind = "dylib", kind = "bar")] | ^^^^^^^^^^^^ error: multiple `modifiers` arguments in a single `#[link]` attribute - --> $DIR/link-attr-validation-late.rs:12:47 + --> $DIR/link-attr-validation-late.rs:11:47 | LL | #[link(name = "...", modifiers = "+verbatim", modifiers = "bar")] | ^^^^^^^^^^^^^^^^^ error: multiple `cfg` arguments in a single `#[link]` attribute - --> $DIR/link-attr-validation-late.rs:13:34 + --> $DIR/link-attr-validation-late.rs:12:34 | LL | #[link(name = "...", cfg(FALSE), cfg(FALSE))] | ^^^^^^^^^^ error: multiple `wasm_import_module` arguments in a single `#[link]` attribute - --> $DIR/link-attr-validation-late.rs:14:36 + --> $DIR/link-attr-validation-late.rs:13:36 | LL | #[link(wasm_import_module = "foo", wasm_import_module = "bar")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: link name must be of the form `name = "string"` - --> $DIR/link-attr-validation-late.rs:18:8 + --> $DIR/link-attr-validation-late.rs:17:8 | LL | #[link(name)] | ^^^^ error[E0459]: `#[link]` attribute requires a `name = "string"` argument - --> $DIR/link-attr-validation-late.rs:18:1 + --> $DIR/link-attr-validation-late.rs:17:1 | LL | #[link(name)] | ^^^^^^^^^^^^^ missing `name` argument error: link name must be of the form `name = "string"` - --> $DIR/link-attr-validation-late.rs:20:8 + --> $DIR/link-attr-validation-late.rs:19:8 | LL | #[link(name())] | ^^^^^^ error[E0459]: `#[link]` attribute requires a `name = "string"` argument - --> $DIR/link-attr-validation-late.rs:20:1 + --> $DIR/link-attr-validation-late.rs:19:1 | LL | #[link(name())] | ^^^^^^^^^^^^^^^ missing `name` argument error: link kind must be of the form `kind = "string"` - --> $DIR/link-attr-validation-late.rs:22:22 + --> $DIR/link-attr-validation-late.rs:21:22 | LL | #[link(name = "...", kind)] | ^^^^ error: link kind must be of the form `kind = "string"` - --> $DIR/link-attr-validation-late.rs:23:22 + --> $DIR/link-attr-validation-late.rs:22:22 | LL | #[link(name = "...", kind())] | ^^^^^^ error: link modifiers must be of the form `modifiers = "string"` - --> $DIR/link-attr-validation-late.rs:24:22 + --> $DIR/link-attr-validation-late.rs:23:22 | LL | #[link(name = "...", modifiers)] | ^^^^^^^^^ error: link modifiers must be of the form `modifiers = "string"` - --> $DIR/link-attr-validation-late.rs:25:22 + --> $DIR/link-attr-validation-late.rs:24:22 | LL | #[link(name = "...", modifiers())] | ^^^^^^^^^^^ error: link cfg must be of the form `cfg(/* predicate */)` - --> $DIR/link-attr-validation-late.rs:26:22 + --> $DIR/link-attr-validation-late.rs:25:22 | LL | #[link(name = "...", cfg)] | ^^^ error: link cfg must be of the form `cfg(/* predicate */)` - --> $DIR/link-attr-validation-late.rs:27:22 + --> $DIR/link-attr-validation-late.rs:26:22 | LL | #[link(name = "...", cfg = "literal")] | ^^^^^^^^^^^^^^^ error: link cfg must have a single predicate argument - --> $DIR/link-attr-validation-late.rs:28:22 + --> $DIR/link-attr-validation-late.rs:27:22 | LL | #[link(name = "...", cfg("literal"))] | ^^^^^^^^^^^^^^ error: wasm import module must be of the form `wasm_import_module = "string"` - --> $DIR/link-attr-validation-late.rs:29:22 + --> $DIR/link-attr-validation-late.rs:28:22 | LL | #[link(name = "...", wasm_import_module)] | ^^^^^^^^^^^^^^^^^^ error: wasm import module must be of the form `wasm_import_module = "string"` - --> $DIR/link-attr-validation-late.rs:30:22 + --> $DIR/link-attr-validation-late.rs:29:22 | LL | #[link(name = "...", wasm_import_module())] | ^^^^^^^^^^^^^^^^^^^^ error: invalid linking modifier syntax, expected '+' or '-' prefix before one of: bundle, verbatim, whole-archive, as-needed - --> $DIR/link-attr-validation-late.rs:34:34 + --> $DIR/link-attr-validation-late.rs:33:34 | LL | #[link(name = "...", modifiers = "")] | ^^ error: invalid linking modifier syntax, expected '+' or '-' prefix before one of: bundle, verbatim, whole-archive, as-needed - --> $DIR/link-attr-validation-late.rs:35:34 + --> $DIR/link-attr-validation-late.rs:34:34 | LL | #[link(name = "...", modifiers = "no-plus-minus")] | ^^^^^^^^^^^^^^^ error: unknown linking modifier `unknown`, expected one of: bundle, verbatim, whole-archive, as-needed - --> $DIR/link-attr-validation-late.rs:36:34 + --> $DIR/link-attr-validation-late.rs:35:34 | LL | #[link(name = "...", modifiers = "+unknown")] | ^^^^^^^^^^ error: multiple `verbatim` modifiers in a single `modifiers` argument - --> $DIR/link-attr-validation-late.rs:37:34 + --> $DIR/link-attr-validation-late.rs:36:34 | LL | #[link(name = "...", modifiers = "+verbatim,+verbatim")] | ^^^^^^^^^^^^^^^^^^^^^