rust/src/test/ui/attributes/item-attributes.rs

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// These are attributes of the implicit crate. Really this just needs to parse
// for completeness since .rs files linked from .rc files support this
// notation to specify their module's attributes
// build-pass (FIXME(62277): could be check-pass?)
#![feature(rustc_attrs)]
#![rustc_dummy = "val"]
#![rustc_dummy = "val"]
#![rustc_dummy]
#![rustc_dummy(attr5)]
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// These are attributes of the following mod
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
mod test_first_item_in_file_mod {}
mod test_single_attr_outer {
#[rustc_dummy = "val"]
pub static X: isize = 10;
#[rustc_dummy = "val"]
pub fn f() { }
#[rustc_dummy = "val"]
pub mod mod1 {}
pub mod rustrt {
#[rustc_dummy = "val"]
extern {}
}
}
mod test_multi_attr_outer {
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
pub static X: isize = 10;
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
pub fn f() { }
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
pub mod mod1 {}
pub mod rustrt {
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
extern {}
}
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
struct T {x: isize}
}
mod test_stmt_single_attr_outer {
pub fn f() {
#[rustc_dummy = "val"]
static X: isize = 10;
#[rustc_dummy = "val"]
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fn f() { }
#[rustc_dummy = "val"]
mod mod1 {
}
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mod rustrt {
#[rustc_dummy = "val"]
extern {
}
}
}
}
mod test_stmt_multi_attr_outer {
pub fn f() {
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
static X: isize = 10;
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
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fn f() { }
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
mod mod1 {
}
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mod rustrt {
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
extern {
}
}
}
}
mod test_attr_inner {
pub mod m {
// This is an attribute of mod m
#![rustc_dummy = "val"]
}
}
mod test_attr_inner_then_outer {
pub mod m {
// This is an attribute of mod m
#![rustc_dummy = "val"]
// This is an attribute of fn f
#[rustc_dummy = "val"]
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fn f() { }
}
}
mod test_attr_inner_then_outer_multi {
pub mod m {
// This is an attribute of mod m
#![rustc_dummy = "val"]
#![rustc_dummy = "val"]
// This is an attribute of fn f
#[rustc_dummy = "val"]
#[rustc_dummy = "val"]
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fn f() { }
}
}
mod test_distinguish_syntax_ext {
pub fn f() {
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format!("test{}", "s");
#[rustc_dummy = "val"]
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fn g() { }
}
}
mod test_other_forms {
#[rustc_dummy]
#[rustc_dummy(word)]
#[rustc_dummy(attr(word))]
#[rustc_dummy(key1 = "val", key2 = "val", attr)]
pub fn f() { }
}
mod test_foreign_items {
pub mod rustrt {
extern {
#![rustc_dummy]
#[rustc_dummy]
std: Add a new wasm32-unknown-unknown target This commit adds a new target to the compiler: wasm32-unknown-unknown. This target is a reimagining of what it looks like to generate WebAssembly code from Rust. Instead of using Emscripten which can bring with it a weighty runtime this instead is a target which uses only the LLVM backend for WebAssembly and a "custom linker" for now which will hopefully one day be direct calls to lld. Notable features of this target include: * There is zero runtime footprint. The target assumes nothing exists other than the wasm32 instruction set. * There is zero toolchain footprint beyond adding the target. No custom linker is needed, rustc contains everything. * Very small wasm modules can be generated directly from Rust code using this target. * Most of the standard library is stubbed out to return an error, but anything related to allocation works (aka `HashMap`, `Vec`, etc). * Naturally, any `#[no_std]` crate should be 100% compatible with this new target. This target is currently somewhat janky due to how linking works. The "linking" is currently unconditional whole program LTO (aka LLVM is being used as a linker). Naturally that means compiling programs is pretty slow! Eventually though this target should have a linker. This target is also intended to be quite experimental. I'm hoping that this can act as a catalyst for further experimentation in Rust with WebAssembly. Breaking changes are very likely to land to this target, so it's not recommended to rely on it in any critical capacity yet. We'll let you know when it's "production ready". --- Currently testing-wise this target is looking pretty good but isn't complete. I've got almost the entire `run-pass` test suite working with this target (lots of tests ignored, but many passing as well). The `core` test suite is still getting LLVM bugs fixed to get that working and will take some time. Relatively simple programs all seem to work though! --- It's worth nothing that you may not immediately see the "smallest possible wasm module" for the input you feed to rustc. For various reasons it's very difficult to get rid of the final "bloat" in vanilla rustc (again, a real linker should fix all this). For now what you'll have to do is: cargo install --git https://github.com/alexcrichton/wasm-gc wasm-gc foo.wasm bar.wasm And then `bar.wasm` should be the smallest we can get it! --- In any case for now I'd love feedback on this, particularly on the various integration points if you've got better ideas of how to approach them!
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fn rust_get_test_int() -> u32;
}
}
}
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// FIXME(#623): - these aren't supported yet
/*mod test_literals {
#![str = "s"]
#![char = 'c']
#![isize = 100]
#![usize = 100_usize]
#![mach_int = 100u32]
#![float = 1.0]
#![mach_float = 1.0f32]
#![nil = ()]
#![bool = true]
mod m {}
}*/
fn test_fn_inner() {
#![rustc_dummy]
}
fn main() {}