bjoernager/rust
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ScalarInt: size mismatches are a bug, do not delay the panic

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This commit is contained in:
Ralf Jung 2024-06-08 16:13:45 +02:00
parent 13423befc4
commit 3c57ea0df7
45 changed files with 247 additions and 313 deletions
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9
compiler/rustc_pattern_analysis/src/rustc.rs
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@ -6,11 +6,12 @@ use rustc_hir::def_id::DefId;
use rustc_hir::HirId;
use rustc_index::{Idx, IndexVec};
use rustc_middle::middle::stability::EvalResult;
use rustc_middle::mir::interpret::Scalar;
use rustc_middle::mir::{self, Const};
use rustc_middle::thir::{self, FieldPat, Pat, PatKind, PatRange, PatRangeBoundary};
use rustc_middle::ty::layout::IntegerExt;
use rustc_middle::ty::{self, FieldDef, OpaqueTypeKey, Ty, TyCtxt, TypeVisitableExt, VariantDef};
use rustc_middle::ty::{
self, FieldDef, OpaqueTypeKey, ScalarInt, Ty, TyCtxt, TypeVisitableExt, VariantDef,
};
use rustc_middle::{bug, span_bug};
use rustc_session::lint;
use rustc_span::{ErrorGuaranteed, Span, DUMMY_SP};
@ -701,9 +702,9 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
ty::Int(_) => miint.as_finite_int(size.bits()).unwrap(),
_ => miint.as_finite_uint().unwrap(),
};
match Scalar::try_from_uint(bits, size) {
match ScalarInt::try_from_uint(bits, size) {
Some(scalar) => {
let value = mir::Const::from_scalar(tcx, scalar, ty.inner());
let value = mir::Const::from_scalar(tcx, scalar.into(), ty.inner());
PatRangeBoundary::Finite(value)
}
// The value doesn't fit. Since `x >= 0` and 0 always encodes the minimum value