diff options
| -rw-r--r-- | compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs | 7 | ||||
| -rw-r--r-- | tests/ui/inline-const/pat-match-fndef.rs | 13 | ||||
| -rw-r--r-- | tests/ui/inline-const/pat-match-fndef.stderr | 17 |
3 files changed, 36 insertions, 1 deletions
diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs index 251c6b4b6da..1376344cfda 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs @@ -325,6 +325,11 @@ impl<'tcx> ConstToPat<'tcx> { // `PartialEq::eq` on it. return Err(FallbackToConstRef); } + ty::FnDef(..) => { + self.saw_const_match_error.set(true); + tcx.sess.emit_err(InvalidPattern { span, non_sm_ty: ty }); + PatKind::Wild + } ty::Adt(adt_def, _) if !self.type_marked_structural(ty) => { debug!("adt_def {:?} has !type_marked_structural for cv.ty: {:?}", adt_def, ty,); self.saw_const_match_error.set(true); @@ -440,7 +445,7 @@ impl<'tcx> ConstToPat<'tcx> { } } }, - ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::FnDef(..) => PatKind::Constant { + ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) => PatKind::Constant { value: mir::ConstantKind::Ty(ty::Const::new_value(tcx, cv, ty)), }, ty::FnPtr(..) | ty::RawPtr(..) => unreachable!(), diff --git a/tests/ui/inline-const/pat-match-fndef.rs b/tests/ui/inline-const/pat-match-fndef.rs new file mode 100644 index 00000000000..fbd4dc66c3a --- /dev/null +++ b/tests/ui/inline-const/pat-match-fndef.rs @@ -0,0 +1,13 @@ +#![feature(inline_const_pat)] +//~^ WARN the feature `inline_const_pat` is incomplete + +fn uwu() {} + +fn main() { + let x = []; + match x[123] { + const { uwu } => {} + //~^ ERROR `fn() {uwu}` cannot be used in patterns + _ => {} + } +} diff --git a/tests/ui/inline-const/pat-match-fndef.stderr b/tests/ui/inline-const/pat-match-fndef.stderr new file mode 100644 index 00000000000..c94782b17ce --- /dev/null +++ b/tests/ui/inline-const/pat-match-fndef.stderr @@ -0,0 +1,17 @@ +warning: the feature `inline_const_pat` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/pat-match-fndef.rs:1:12 + | +LL | #![feature(inline_const_pat)] + | ^^^^^^^^^^^^^^^^ + | + = note: see issue #76001 <https://github.com/rust-lang/rust/issues/76001> for more information + = note: `#[warn(incomplete_features)]` on by default + +error: `fn() {uwu}` cannot be used in patterns + --> $DIR/pat-match-fndef.rs:9:9 + | +LL | const { uwu } => {} + | ^^^^^^^^^^^^^ + +error: aborting due to previous error; 1 warning emitted + |