================
@@ -0,0 +1,122 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "LibStdcpp.h"
+
+#include "lldb/DataFormatters/TypeSynthetic.h"
+#include "lldb/Utility/ConstString.h"
+#include "lldb/ValueObject/ValueObject.h"
+#include "lldb/lldb-enumerations.h"
+
+using namespace lldb;
+
+namespace lldb_private::formatters {
+
+class LibStdcppAtomicSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
+public:
+ explicit LibStdcppAtomicSyntheticFrontEnd(const ValueObjectSP &valobj_sp)
+ : SyntheticChildrenFrontEnd(*valobj_sp),
+ m_inner_name(ConstString("Value")) {}
+
+ llvm::Expected<uint32_t> CalculateNumChildren() final {
+ return m_inner ? 1 : 0;
+ }
+
+ ValueObjectSP GetChildAtIndex(uint32_t idx) final {
+ if (idx == 0 && m_inner)
+ return m_inner->GetSP()->Clone(m_inner_name);
+
+ return {};
+ }
+
+ lldb::ChildCacheState Update() final {
+ if (ValueObjectSP value = ContainerFieldName(m_backend)) {
+ // show the Type, instead of std::__atomic_base<Type>::__Type_type.
+ value = value->Cast(value->GetCompilerType().GetCanonicalType());
+ m_inner = value.get();
+ }
+
+ return lldb::ChildCacheState::eRefetch;
+ }
+
+ llvm::Expected<size_t> GetIndexOfChildWithName(ConstString name) final {
+ if (name == m_inner_name)
+ return 0;
+
+ return llvm::createStringError("Type has no child named '%s'",
+ name.AsCString());
+ }
+
+ static ValueObjectSP ContainerFieldName(ValueObject &backend_syn) {
+ const ValueObjectSP non_synthetic = backend_syn.GetNonSyntheticValue();
+ if (!non_synthetic || !non_synthetic.get())
----------------
Michael137 wrote:
```suggestion
const ValueObjectSP non_synthetic_sp = backend_syn.GetNonSyntheticValue();
if (!non_synthetic_sp)
```
https://github.com/llvm/llvm-project/pull/174218
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