diff options
Diffstat (limited to 'compiler/rustc_mir_transform/src/validate.rs')
| -rw-r--r-- | compiler/rustc_mir_transform/src/validate.rs | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/compiler/rustc_mir_transform/src/validate.rs b/compiler/rustc_mir_transform/src/validate.rs index fd91508cc11..7dcdd7999f2 100644 --- a/compiler/rustc_mir_transform/src/validate.rs +++ b/compiler/rustc_mir_transform/src/validate.rs @@ -1308,37 +1308,27 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> { } } CastKind::Transmute => { - if let MirPhase::Runtime(..) = self.body.phase { - // Unlike `mem::transmute`, a MIR `Transmute` is well-formed - // for any two `Sized` types, just potentially UB to run. - - if !self - .tcx - .normalize_erasing_regions(self.typing_env, op_ty) - .is_sized(self.tcx, self.typing_env) - { - self.fail( - location, - format!("Cannot transmute from non-`Sized` type {op_ty}"), - ); - } - if !self - .tcx - .normalize_erasing_regions(self.typing_env, *target_type) - .is_sized(self.tcx, self.typing_env) - { - self.fail( - location, - format!("Cannot transmute to non-`Sized` type {target_type:?}"), - ); - } - } else { + // Unlike `mem::transmute`, a MIR `Transmute` is well-formed + // for any two `Sized` types, just potentially UB to run. + + if !self + .tcx + .normalize_erasing_regions(self.typing_env, op_ty) + .is_sized(self.tcx, self.typing_env) + { self.fail( location, - format!( - "Transmute is not supported in non-runtime phase {:?}.", - self.body.phase - ), + format!("Cannot transmute from non-`Sized` type {op_ty}"), + ); + } + if !self + .tcx + .normalize_erasing_regions(self.typing_env, *target_type) + .is_sized(self.tcx, self.typing_env) + { + self.fail( + location, + format!("Cannot transmute to non-`Sized` type {target_type:?}"), ); } } |