diff options
Diffstat (limited to 'compiler/rustc_borrowck/src/def_use.rs')
| -rw-r--r-- | compiler/rustc_borrowck/src/def_use.rs | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/compiler/rustc_borrowck/src/def_use.rs b/compiler/rustc_borrowck/src/def_use.rs index 6deb4e361..b719a610e 100644 --- a/compiler/rustc_borrowck/src/def_use.rs +++ b/compiler/rustc_borrowck/src/def_use.rs @@ -51,12 +51,16 @@ pub fn categorize(context: PlaceContext) -> Option<DefUse> { PlaceContext::NonMutatingUse(NonMutatingUseContext::SharedBorrow) | PlaceContext::NonMutatingUse(NonMutatingUseContext::ShallowBorrow) | + // `PlaceMention` and `AscribeUserType` both evaluate the place, which must not + // contain dangling references. + PlaceContext::NonMutatingUse(NonMutatingUseContext::PlaceMention) | + PlaceContext::NonUse(NonUseContext::AscribeUserTy(_)) | + PlaceContext::MutatingUse(MutatingUseContext::AddressOf) | PlaceContext::NonMutatingUse(NonMutatingUseContext::AddressOf) | PlaceContext::NonMutatingUse(NonMutatingUseContext::Inspect) | PlaceContext::NonMutatingUse(NonMutatingUseContext::Copy) | PlaceContext::NonMutatingUse(NonMutatingUseContext::Move) | - PlaceContext::NonUse(NonUseContext::AscribeUserTy) | PlaceContext::MutatingUse(MutatingUseContext::Retag) => Some(DefUse::Use), @@ -71,8 +75,6 @@ pub fn categorize(context: PlaceContext) -> Option<DefUse> { PlaceContext::MutatingUse(MutatingUseContext::Drop) => Some(DefUse::Drop), - // This statement exists to help unsafeck. It does not require the place to be live. - PlaceContext::NonUse(NonUseContext::PlaceMention) => None, // Debug info is neither def nor use. PlaceContext::NonUse(NonUseContext::VarDebugInfo) => None, |