use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::{Adt, Ty};
use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
use rustc_target::abi::LayoutOf as _;
use rustc_typeck::hir_ty_to_ty;
-use crate::utils::{is_type_diagnostic_item, match_type, paths, span_lint_and_help};
+use crate::utils::{is_normalizable, is_type_diagnostic_item, match_type, paths, span_lint_and_help};
declare_clippy_lint! {
/// **What it does:** Checks for maps with zero-sized value types anywhere in the code.
if !hir_ty.span.from_expansion();
if !in_trait_impl(cx, hir_ty.hir_id);
let ty = ty_from_hir_ty(cx, hir_ty);
- if is_type_diagnostic_item(cx, ty, sym!(hashmap_type)) || match_type(cx, ty, &paths::BTREEMAP);
+ if is_type_diagnostic_item(cx, ty, sym::hashmap_type) || match_type(cx, ty, &paths::BTREEMAP);
if let Adt(_, ref substs) = ty.kind();
let ty = substs.type_at(1);
+ // Do this to prevent `layout_of` crashing, being unable to fully normalize `ty`.
+ if is_normalizable(cx, cx.param_env, ty);
if let Ok(layout) = cx.layout_of(ty);
if layout.is_zst();
then {