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rustc_lint: avoid trimmed paths for ty_find_init_error
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@ -40,6 +40,7 @@ use rustc_hir::{ForeignItemKind, GenericParamKind, PatKind};
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use rustc_hir::{HirId, HirIdSet, Node};
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use rustc_index::vec::Idx;
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use rustc_middle::lint::LintDiagnosticBuilder;
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use rustc_middle::ty::print::with_no_trimmed_paths;
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use rustc_middle::ty::subst::{GenericArgKind, Subst};
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use rustc_middle::ty::{self, layout::LayoutError, Ty, TyCtxt};
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use rustc_session::lint::FutureIncompatibleInfo;
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@ -2040,7 +2041,9 @@ impl<'tcx> LateLintPass<'tcx> for InvalidValue {
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// using zeroed or uninitialized memory.
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// We are extremely conservative with what we warn about.
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let conjured_ty = cx.typeck_results().expr_ty(expr);
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if let Some((msg, span)) = ty_find_init_error(cx.tcx, conjured_ty, init) {
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if let Some((msg, span)) =
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with_no_trimmed_paths(|| ty_find_init_error(cx.tcx, conjured_ty, init))
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{
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cx.struct_span_lint(INVALID_VALUE, expr.span, |lint| {
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let mut err = lint.build(&format!(
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"the type `{}` does not permit {}",
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@ -294,7 +294,7 @@ LL | let _val: NonNull<i32> = mem::zeroed();
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| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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= note: `NonNull<i32>` must be non-null
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= note: `std::ptr::NonNull<i32>` must be non-null
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error: the type `NonNull<i32>` does not permit being left uninitialized
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--> $DIR/uninitialized-zeroed.rs:80:34
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@ -305,7 +305,7 @@ LL | let _val: NonNull<i32> = mem::uninitialized();
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| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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= note: `NonNull<i32>` must be non-null
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= note: `std::ptr::NonNull<i32>` must be non-null
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error: the type `*const dyn Send` does not permit zero-initialization
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--> $DIR/uninitialized-zeroed.rs:82:37
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@ -415,7 +415,7 @@ LL | let _val: NonZeroU32 = mem::transmute(0);
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| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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= note: `NonZeroU32` must be non-null
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= note: `std::num::NonZeroU32` must be non-null
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error: the type `NonNull<i32>` does not permit zero-initialization
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--> $DIR/uninitialized-zeroed.rs:104:34
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@ -426,7 +426,7 @@ LL | let _val: NonNull<i32> = MaybeUninit::zeroed().assume_init();
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| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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= note: `NonNull<i32>` must be non-null
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= note: `std::ptr::NonNull<i32>` must be non-null
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error: the type `NonNull<i32>` does not permit being left uninitialized
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--> $DIR/uninitialized-zeroed.rs:105:34
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@ -437,7 +437,7 @@ LL | let _val: NonNull<i32> = MaybeUninit::uninit().assume_init();
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| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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= note: `NonNull<i32>` must be non-null
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= note: `std::ptr::NonNull<i32>` must be non-null
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error: the type `bool` does not permit being left uninitialized
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--> $DIR/uninitialized-zeroed.rs:106:26
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