在Rust编译器源代码中,rustc_builtin_macros/src/compile_error.rs文件是一个实现了compile_error!宏的文件。该宏用于在编译时触发一个错误消息,从而导致编译失败。 具体来说,该文件定义了一个compile_error函数,该函数接受一个字符串作为参数,该字符串将被作为编译错误的错误消息。函数内部使用另一个
在Rust编译器源代码中,rustc_builtin_macros/src/compile_error.rs文件是一个实现了compile_error!宏的文件。该宏用于在编译时触发一个错误消息,从而导致编译失败。 具体来说,该文件定义了一个compile_error函数,该函数接受一个字符串作为参数,该字符串将被作为编译错误的错误消息。函数内部使用另一个宏concat!将传...
compile_error!("`spriv-std` now requires the use of `glam`. Make sure the "glam" feature is specified for `spirv-std` in `Cargo.toml`"); compile_error!( r#"`spriv-std` now requires the use of `glam`. Make sure the "glam" feature is specified for `spirv-std` in `Cargo.toml...
直接panic 调用compile_error!上报(emit)错误 如果一个过程宏panic了,编译器会从宏调用中捕获这个错误并且将它作为错误上报。 另外,编译器会将一个无限循环(endless loops)的过程宏挂起,这会导致过程宏所在的crate也被挂起。 函数宏(Function-like) 函数宏和声明宏一样的调用格式:macro!(...)。 函数宏算是过程...
error: could not compile `syn` (lib) Caused by: process didn't exit successfully: `/home/bheineman/.rustup/toolchains/1.83.0-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=[201](https://github.com/theseus-rs/rsql/actions/runs/12363542400/job/34505446462?pr=238#step:7...
error: could not compile `cargo_learn`. To learn more, run the command again with --verbose. 我们还可以使用match表达式来自定义对于返回值执行不同的操作: use std::fs::File; fn main() { let f = File::open("hello.txt"); let f = match f { ...
See also the macro [compile_error!], for raising errors during compilation. When to use panic! vs Result The Rust language provides two complementary systems for constructing / representing, reporting, propagating, reacting to, and discarding errors. These responsibilities are collectively known as "...
error[E0277]: the sizeforvaluesoftype`str`cannot be known at compilationtime--> src/main.rs:4:9|4|let string: str="banana";|^^^doesn't have a size known at compile-time 1. 2. 3. 4. 5. 编译器准确的告诉了我们原因:str 字符串切片它是 DST 动态大小类型,这意味着编译器无法在编译期...
error: could not compile `restaurant` due to 2 previous errors 错误信息说 hosting 模块是私有的。换句话说,我们拥有 hosting 模块和 add_to_waitlist 函数的正确路径,但是 Rust 不让我们使用,因为它不能访问私有片段。在 Rust 中,默认所有项(函数、方法、结构体、枚举、模块和常量)对父模块都是私有的。如...
v0.4.17error:linker `cc` not found|=note: No such file or directory (os error 2)error:could not compile `log` due to previous errorwarning:build failed, waiting for other jobs to finish...error:failed to compile `tere v1.1.0`, intermediate artifacts can be found at `/tmp/cargo-...