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Fix mem::conjure_zst panic message to use any::type_name instead #153073

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Merged
rust-bors merged 1 commit into from
Feb 28, 2026
+4 −3
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Fix mem::conjure_zst panic message to use any::type_name instead #153073

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7 changes: 4 additions & 3 deletions library/core/src/mem/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1488,12 +1488,13 @@ pub macro offset_of($Container:ty, $($fields:expr)+ $(,)?) {
///
/// [inhabited]: https://doc.rust-lang.org/reference/glossary.html#inhabited
#[unstable(feature = "mem_conjure_zst", issue = "95383")]
#[rustc_const_unstable(feature = "mem_conjure_zst", issue = "95383")]
pub const unsafe fn conjure_zst<T>() -> T {
const_assert!(
size_of::<T>() == 0,
"mem::conjure_zst invoked on a nonzero-sized type",
"mem::conjure_zst invoked on type {t}, which is not zero-sized",
t: &str = stringify!(T)
"mem::conjure_zst invoked on a non-zero-sized type",
"mem::conjure_zst invoked on type {name}, which is not zero-sized",
name: &str = crate::any::type_name::<T>()
);

// SAFETY: because the caller must guarantee that it's inhabited and zero-sized,
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