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Suggest to specify a target triple when eh_personality lang item is missing

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This commit is contained in:
Lucas Kent 2021-12-12 13:04:00 +11:00
parent 6d6d0899c8
commit fae40c5070
4 changed files with 15 additions and 3 deletions
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10
compiler/rustc_passes/src/weak_lang_items.rs
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@ -67,10 +67,16 @@ fn verify<'tcx>(tcx: TyCtxt<'tcx>, items: &lang_items::LanguageItems) {
} else if item == LangItem::Oom {
if !tcx.features().default_alloc_error_handler {
tcx.sess.err("`#[alloc_error_handler]` function required, but not found");
tcx.sess.note_without_error("Use `#![feature(default_alloc_error_handler)]` for a default error handler");
tcx.sess.note_without_error("use `#![feature(default_alloc_error_handler)]` for a default error handler");
}
} else {
tcx.sess.err(&format!("language item required, but not found: `{}`", name));
tcx
.sess
.diagnostic()
.struct_err(&format!("language item required, but not found: `{}`", name))
.note(&format!("this can occur when a binary crate with `#![no_std]` is compiled for a target where `{}` is defined in the standard library", name))
.help(&format!("you may be able to compile for a target that doesn't need `{}`, specify a target with `--target` or in `.cargo/config`", name))
.emit();
}
}
}

3
src/test/ui/extern-flag/empty-extern-arg.stderr
View file

@ -1,6 +1,9 @@
error: extern location for std does not exist:
error: language item required, but not found: `eh_personality`
|
= note: this can occur when a binary crate with `#![no_std]` is compiled for a target where `eh_personality` is defined in the standard library
= help: you may be able to compile for a target that doesn't need `eh_personality`, specify a target with `--target` or in `.cargo/config`
error: `#[panic_handler]` function required, but not found

2
src/test/ui/missing/missing-alloc_error_handler.stderr
View file

@ -1,6 +1,6 @@
error: `#[alloc_error_handler]` function required, but not found
note: Use `#![feature(default_alloc_error_handler)]` for a default error handler
note: use `#![feature(default_alloc_error_handler)]` for a default error handler
error: aborting due to previous error

3
src/test/ui/panic-handler/weak-lang-item.stderr
View file

@ -11,6 +11,9 @@ LL | extern crate core as other_core;
|
error: language item required, but not found: `eh_personality`
|
= note: this can occur when a binary crate with `#![no_std]` is compiled for a target where `eh_personality` is defined in the standard library
= help: you may be able to compile for a target that doesn't need `eh_personality`, specify a target with `--target` or in `.cargo/config`
error: `#[panic_handler]` function required, but not found