diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mir/check_full.cpp | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/src/mir/check_full.cpp b/src/mir/check_full.cpp index 9affd0b8..34a14d0c 100644 --- a/src/mir/check_full.cpp +++ b/src/mir/check_full.cpp @@ -245,8 +245,16 @@ namespace ), (Downcast, auto vs_v = get_lvalue_state(mir_res, *e.val); - MIR_ASSERT(mir_res, !vs_v.is_composite(), ""); - return vs_v; + if( vs_v.is_composite() ) + { + const auto& states = this->get_composite(mir_res, vs_v); + MIR_ASSERT(mir_res, states.size() == 1, "Downcast on composite of invalid size"); + return states[0]; + } + else + { + return vs_v; + } ) ) throw ""; @@ -349,7 +357,23 @@ namespace // NOTE: Ignore ), (Downcast, - // NOTE: Ignore + auto cur_vs = get_lvalue_state(mir_res, *e.val); + if( !cur_vs.is_composite() && cur_vs == new_vs ) + { + // Not a composite, and no state change + } + else + { + if( !cur_vs.is_composite() ) + { + cur_vs = this->allocate_composite(1, cur_vs); + set_lvalue_state(mir_res, *e.val, cur_vs); + } + // Get composite state and assign into it + auto& states = this->get_composite(mir_res, cur_vs); + MIR_ASSERT(mir_res, states.size() == 1, "Downcast on composite of invalid size"); + states[0] = new_vs; + } ) ) } @@ -517,7 +541,7 @@ void MIR_Validate_FullValState(::MIR::TypeResolve& mir_res, const ::MIR::Functio // - Ensure that that is the pattern we're seeing here. auto vs = state.get_lvalue_state(mir_res, se.slot); - MIR_ASSERT(mir_res, !vs.is_valid(), "Shallow drop on fully-valid value - " << se.slot); + MIR_ASSERT(mir_res, vs.index != ~0u, "Shallow drop on fully-valid value - " << se.slot); // Box<T> - Wrapper around Unique<T> MIR_ASSERT(mir_res, vs.is_composite(), "Shallow drop on non-composite state - " << se.slot << " (state=" << StateFmt(state,vs) << ")"); |