len() > 2 { // This is the case where RA inserted a dummy {} block panic!("{fn_block_tokens:#?}"); } item } If you take a look at the panic message from RA hints it looks like this: proc-macro panicked: [ Ident { ident: "if", span: SpanData { range: 38..40, ...
Code cargo install dufs Meta rustc --version --verbose: rustc -V rustc 1.71.1 Error output cargo install dufs Updating crates.io index Installing dufs v0.43.0 Updating crates.io index Compiling proc-macro2 v1.0.89 thread 'rustc' panicked...
EN我正在实现一个proc宏，并在另一个机箱中进行测试。当我编译客户端机箱时，从proc宏的调用站点抛出一...
有一个夜间rustc标志-Zproc-macro-backtrace，当proc宏出现异常时，它会打印一个回溯。
I am experiencing a strange panic that happens inside procedural macros when they are compiled as dynamic libraries, dynamically linked and then called explicitly using proc_macro::bridge::client. It's quite hard to reproduce in small am...
1: core::panicking::panic_fmt 2: core::result::unwrap_failed 3: hir_expand::fixup::reverse_fixups 4: <hir_expand::db::ExpandProcMacroQuery as ra_salsa::plumbing::QueryFunction>::execute 5: ra_salsa::Cycle::catch 6: ra_salsa::derived::slot::Slot<Q>::execute ...
(build script) due to 2 previous errors --- stderr thread 'main' panicked at crates\proc-macro-srv\proc-macro-test\build.rs:91:9: proc-macro-test-impl failed to build note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace warning: build failed, waiting for ...
Using #![feature(proc_macro)] in combination with attributes enabled by #[proc_macro_derive(MyTrait, attributes(mycrate))] (e.g. #[mycrate(some_option = "something")]) fails to compile on the current nightly with error: macro undefined: ...