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use cherry-picked commit from #100754 to emit note without error

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This commit is contained in:
Nathan Stocks 2022-09-22 10:15:51 -06:00
parent f8ebc72b4a
commit 3a748330af
3 changed files with 12 additions and 5 deletions
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6
compiler/rustc_error_messages/locales/en-US/passes.ftl
View File

@ -364,9 +364,11 @@ passes_unknown_external_lang_item =
passes_missing_panic_handler =
`#[panic_handler]` function required, but not found
passes_missing_alloc_error_handler =
passes_alloc_func_required =
`#[alloc_error_handler]` function required, but not found
.note = use `#![feature(default_alloc_error_handler)]` for a default error handler
passes_missing_alloc_error_handler =
use `#![feature(default_alloc_error_handler)]` for a default error handler
passes_missing_lang_item =
language item required, but not found: `{$name}`

5
compiler/rustc_passes/src/errors.rs
View File

@ -690,9 +690,12 @@ pub struct UnknownExternLangItem {
#[diag(passes::missing_panic_handler)]
pub struct MissingPanicHandler;
#[derive(Diagnostic)]
#[diag(passes::alloc_func_required)]
pub struct AllocFuncRequired;
#[derive(Diagnostic)]
#[diag(passes::missing_alloc_error_handler)]
#[note]
pub struct MissingAllocErrorHandler;
#[derive(Diagnostic)]

6
compiler/rustc_passes/src/weak_lang_items.rs
View File

@ -8,7 +8,8 @@ use rustc_middle::ty::TyCtxt;
use rustc_session::config::CrateType;
use crate::errors::{
MissingAllocErrorHandler, MissingLangItem, MissingPanicHandler, UnknownExternLangItem,
AllocFuncRequired, MissingAllocErrorHandler, MissingLangItem, MissingPanicHandler,
UnknownExternLangItem,
};
/// Checks the crate for usage of weak lang items, returning a vector of all the
@ -70,7 +71,8 @@ fn verify<'tcx>(tcx: TyCtxt<'tcx>, items: &lang_items::LanguageItems) {
tcx.sess.emit_err(MissingPanicHandler);
} else if item == LangItem::Oom {
if !tcx.features().default_alloc_error_handler {
tcx.sess.emit_err(MissingAllocErrorHandler);
tcx.sess.emit_err(AllocFuncRequired);
tcx.sess.emit_note(MissingAllocErrorHandler);
}
} else {
tcx.sess.emit_err(MissingLangItem { name: *name });