diff --git a/compiler/rustc_error_messages/locales/en-US/interface.ftl b/compiler/rustc_error_messages/locales/en-US/interface.ftl index bbcb8fc28cf..688b0447222 100644 --- a/compiler/rustc_error_messages/locales/en-US/interface.ftl +++ b/compiler/rustc_error_messages/locales/en-US/interface.ftl @@ -41,3 +41,6 @@ interface_rustc_error_unexpected_annotation = interface_failed_writing_file = failed to write file {$path}: {$error}" + +interface_proc_macro_crate_panic_abort = + building proc macro crate with `panic=abort` may crash the compiler should the proc-macro panic diff --git a/compiler/rustc_interface/Cargo.toml b/compiler/rustc_interface/Cargo.toml index e67dec31dce..f817c5bc1cd 100644 --- a/compiler/rustc_interface/Cargo.toml +++ b/compiler/rustc_interface/Cargo.toml @@ -45,6 +45,7 @@ rustc_plugin_impl = { path = "../rustc_plugin_impl" } rustc_privacy = { path = "../rustc_privacy" } rustc_query_impl = { path = "../rustc_query_impl" } rustc_resolve = { path = "../rustc_resolve" } +rustc_target = { path = "../rustc_target" } rustc_trait_selection = { path = "../rustc_trait_selection" } rustc_ty_utils = { path = "../rustc_ty_utils" } diff --git a/compiler/rustc_interface/src/errors.rs b/compiler/rustc_interface/src/errors.rs index f5135c78dc8..15d7e977bbe 100644 --- a/compiler/rustc_interface/src/errors.rs +++ b/compiler/rustc_interface/src/errors.rs @@ -87,3 +87,7 @@ pub struct FailedWritingFile<'a> { pub path: &'a Path, pub error: io::Error, } + +#[derive(Diagnostic)] +#[diag(interface_proc_macro_crate_panic_abort)] +pub struct ProcMacroCratePanicAbort; diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs index 86d56385bc9..c8085e91dfa 100644 --- a/compiler/rustc_interface/src/passes.rs +++ b/compiler/rustc_interface/src/passes.rs @@ -1,7 +1,8 @@ use crate::errors::{ CantEmitMIR, EmojiIdentifier, ErrorWritingDependencies, FerrisIdentifier, GeneratedFileConflictsWithDirectory, InputFileWouldBeOverWritten, MixedBinCrate, - MixedProcMacroCrate, OutDirError, ProcMacroDocWithoutArg, TempsDirError, + MixedProcMacroCrate, OutDirError, ProcMacroCratePanicAbort, ProcMacroDocWithoutArg, + TempsDirError, }; use crate::interface::{Compiler, Result}; use crate::proc_macro_decls; @@ -36,6 +37,7 @@ use rustc_session::{Limit, Session}; use rustc_span::symbol::{sym, Symbol}; use rustc_span::FileName; +use rustc_target::spec::PanicStrategy; use rustc_trait_selection::traits; use std::any::Any; @@ -380,6 +382,10 @@ pub fn configure_and_expand( } } + if is_proc_macro_crate && sess.panic_strategy() == PanicStrategy::Abort { + sess.emit_warning(ProcMacroCratePanicAbort); + } + // For backwards compatibility, we don't try to run proc macro injection // if rustdoc is run on a proc macro crate without '--crate-type proc-macro' being // specified. This should only affect users who manually invoke 'rustdoc', as diff --git a/tests/ui/proc-macro/panic-abort.rs b/tests/ui/proc-macro/panic-abort.rs new file mode 100644 index 00000000000..ad312a875e3 --- /dev/null +++ b/tests/ui/proc-macro/panic-abort.rs @@ -0,0 +1,4 @@ +// error-pattern: building proc macro crate with `panic=abort` may crash the compiler should the proc-macro panic +// compile-flags: --crate-type proc-macro -Cpanic=abort +// force-host +// check-pass diff --git a/tests/ui/proc-macro/panic-abort.stderr b/tests/ui/proc-macro/panic-abort.stderr new file mode 100644 index 00000000000..a6e18614f8f --- /dev/null +++ b/tests/ui/proc-macro/panic-abort.stderr @@ -0,0 +1,4 @@ +warning: building proc macro crate with `panic=abort` may crash the compiler should the proc-macro panic + +warning: 1 warning emitted +