[Lldb-commits] [lldb] Add AddressRange to SB API (PR #92014)

[Alex Langford via lldb-commits]

================
@@ -0,0 +1,78 @@
+//===-- SBAddressRange.cpp ------------------------------------------------===//
+//
+// 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 "lldb/API/SBAddressRange.h"
+#include "Utils.h"
+#include "lldb/API/SBAddress.h"
+#include "lldb/Core/AddressRange.h"
+#include "lldb/Utility/Instrumentation.h"
+#include <cstddef>
+#include <memory>
+
+using namespace lldb;
+using namespace lldb_private;
+
+SBAddressRange::SBAddressRange()
+    : m_opaque_up(std::make_unique<AddressRange>()) {
+  LLDB_INSTRUMENT_VA(this);
+}
+
+SBAddressRange::SBAddressRange(const SBAddressRange &rhs) {
+  LLDB_INSTRUMENT_VA(this, rhs);
+
+  m_opaque_up = clone(rhs.m_opaque_up);
+}
+
+SBAddressRange::SBAddressRange(lldb::addr_t file_addr, lldb::addr_t byte_size)
+    : m_opaque_up(std::make_unique<AddressRange>(file_addr, byte_size)) {
+  LLDB_INSTRUMENT_VA(this, file_addr, byte_size);
+}
+
+SBAddressRange::~SBAddressRange() = default;
+
+const SBAddressRange &SBAddressRange::operator=(const SBAddressRange &rhs) {
+  LLDB_INSTRUMENT_VA(this, rhs);
+
+  if (this != &rhs)
+    m_opaque_up = clone(rhs.m_opaque_up);
+  return *this;
+}
+
+void SBAddressRange::Clear() {
+  LLDB_INSTRUMENT_VA(this);
+
+  m_opaque_up.reset();
+}
+
+bool SBAddressRange::IsValid() const {
+  return m_opaque_up && m_opaque_up->IsValid();
+}
+
+lldb::SBAddress SBAddressRange::GetBaseAddress() const {
+  LLDB_INSTRUMENT_VA(this);
+
+  assert(m_opaque_up.get() && "AddressRange is NULL");
----------------
bulbazord wrote:

We definitely do not want to assert here. Taking down the entire process because somebody has an invalid address range and tried to ask for data is definitely not a safe solution. In this case, it should return an empty SBAddress.

https://github.com/llvm/llvm-project/pull/92014