diff options
Diffstat (limited to 'compiler/rustc_mir_dataflow/src/drop_flag_effects.rs')
-rw-r--r-- | compiler/rustc_mir_dataflow/src/drop_flag_effects.rs | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/compiler/rustc_mir_dataflow/src/drop_flag_effects.rs b/compiler/rustc_mir_dataflow/src/drop_flag_effects.rs index 3224e13f7..0d466bbe5 100644 --- a/compiler/rustc_mir_dataflow/src/drop_flag_effects.rs +++ b/compiler/rustc_mir_dataflow/src/drop_flag_effects.rs @@ -1,5 +1,5 @@ use crate::elaborate_drops::DropFlagState; -use rustc_middle::mir::{self, Body, Location}; +use rustc_middle::mir::{self, Body, Location, Terminator, TerminatorKind}; use rustc_middle::ty::{self, TyCtxt}; use rustc_target::abi::VariantIdx; @@ -194,6 +194,17 @@ pub fn drop_flag_effects_for_location<'tcx, F>( on_all_children_bits(tcx, body, move_data, path, |mpi| callback(mpi, DropFlagState::Absent)) } + // Drop does not count as a move but we should still consider the variable uninitialized. + if let Some(Terminator { kind: TerminatorKind::Drop { place, .. }, .. }) = + body.stmt_at(loc).right() + { + if let LookupResult::Exact(mpi) = move_data.rev_lookup.find(place.as_ref()) { + on_all_children_bits(tcx, body, move_data, mpi, |mpi| { + callback(mpi, DropFlagState::Absent) + }) + } + } + debug!("drop_flag_effects: assignment for location({:?})", loc); for_location_inits(tcx, body, move_data, loc, |mpi| callback(mpi, DropFlagState::Present)); |