bjoernager/rust
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u128 truncation and sign extension are not just interpreter related

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This commit is contained in:
oli 2020-11-04 13:41:58 +00:00
parent e67c768110
commit abacaf2aef
18 changed files with 73 additions and 89 deletions
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5
compiler/rustc_lint/src/types.rs
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@ -6,7 +6,6 @@ use rustc_errors::Applicability;
use rustc_hir as hir;
use rustc_hir::{is_range_literal, ExprKind, Node};
use rustc_index::vec::Idx;
use rustc_middle::mir::interpret::{sign_extend, truncate};
use rustc_middle::ty::layout::{IntegerExt, SizeSkeleton};
use rustc_middle::ty::subst::SubstsRef;
use rustc_middle::ty::{self, AdtKind, Ty, TyCtxt, TypeFoldable};
@ -218,11 +217,11 @@ fn report_bin_hex_error(
cx.struct_span_lint(OVERFLOWING_LITERALS, expr.span, |lint| {
let (t, actually) = match ty {
attr::IntType::SignedInt(t) => {
let actually = sign_extend(val, size) as i128;
let actually = size.sign_extend(val) as i128;
(t.name_str(), actually.to_string())
}
attr::IntType::UnsignedInt(t) => {
let actually = truncate(val, size);
let actually = size.truncate(val);
(t.name_str(), actually.to_string())
}
};