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Turn an unreachable code path into an ICE #128189

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Jul 25, 2024
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Turn an unreachable code path into an ICE #128189

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16 changes: 5 additions & 11 deletions compiler/rustc_mir_build/src/thir/cx/expr.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,6 @@ use crate::thir::cx::region::Scope;
use crate::thir::cx::Cx;
use crate::thir::util::UserAnnotatedTyHelpers;
use itertools::Itertools;
use rustc_ast::LitKind;
use rustc_data_structures::stack::ensure_sufficient_stack;
use rustc_hir as hir;
use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res};
Expand All @@ -22,8 +21,7 @@ use rustc_middle::ty::{
self, AdtKind, InlineConstArgs, InlineConstArgsParts, ScalarInt, Ty, UpvarArgs, UserType,
};
use rustc_middle::{bug, span_bug};
use rustc_span::source_map::Spanned;
use rustc_span::{sym, Span, DUMMY_SP};
use rustc_span::{sym, Span};
use rustc_target::abi::{FieldIdx, FIRST_VARIANT};
use tracing::{debug, info, instrument, trace};

Expand Down Expand Up @@ -899,14 +897,10 @@ impl<'tcx> Cx<'tcx> {
let hir_id = self.tcx.local_def_id_to_hir_id(def_id.expect_local());
let generics = self.tcx.generics_of(hir_id.owner);
let Some(&index) = generics.param_def_id_to_index.get(&def_id) else {
let guar = self.tcx.dcx().has_errors().unwrap();
// We already errored about a late bound const

let lit = self
.tcx
.hir_arena
.alloc(Spanned { span: DUMMY_SP, node: LitKind::Err(guar) });
return ExprKind::Literal { lit, neg: false };
span_bug!(
expr.span,
"Should have already errored about late bound consts: {def_id:?}"
);
};
let name = self.tcx.hir().name(hir_id);
let param = ty::ParamConst::new(index, name);
Expand Down
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