eca07c592a
Clang recently improved its DWARF support for C VLA types. The DWARF
now looks like this:
0x00000051: DW_TAG_variable [4]
DW_AT_location( fbreg -32 )
DW_AT_name( "__vla_expr" )
DW_AT_type( {0x000000d3} ( long unsigned int ) )
DW_AT_artificial( true )
...
0x000000da: DW_TAG_array_type [10] *
DW_AT_type( {0x000000cc} ( int ) )
0x000000df: DW_TAG_subrange_type [11]
DW_AT_type( {0x000000e9} ( __ARRAY_SIZE_TYPE__ ) )
DW_AT_count( {0x00000051} )
Without this patch LLDB will naively interpret the DIE offset 0x51 as
the static size of the array, which is clearly wrong. This patch
extends ValueObject::GetNumChildren to query the dynamic properties of
incomplete array types.
See the testcase for an example:
4 int foo(int a) {
5 int vla[a];
6 for (int i = 0; i < a; ++i)
7 vla[i] = i;
8
-> 9 pause(); // break here
10 return vla[a-1];
11 }
(lldb) fr v vla
(int []) vla = ([0] = 0, [1] = 1, [2] = 2, [3] = 3)
(lldb) quit
rdar://problem/21814005
Differential Revision: https://reviews.llvm.org/D53530
llvm-svn: 346165
119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
//===-- SymbolFileSymtab.h --------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef liblldb_SymbolFileSymtab_h_
|
|
#define liblldb_SymbolFileSymtab_h_
|
|
|
|
// C Includes
|
|
// C++ Includes
|
|
#include <map>
|
|
#include <vector>
|
|
|
|
// Other libraries and framework includes
|
|
// Project includes
|
|
#include "lldb/Symbol/SymbolFile.h"
|
|
#include "lldb/Symbol/Symtab.h"
|
|
|
|
class SymbolFileSymtab : public lldb_private::SymbolFile {
|
|
public:
|
|
//------------------------------------------------------------------
|
|
// Constructors and Destructors
|
|
//------------------------------------------------------------------
|
|
SymbolFileSymtab(lldb_private::ObjectFile *obj_file);
|
|
|
|
~SymbolFileSymtab() override;
|
|
|
|
//------------------------------------------------------------------
|
|
// Static Functions
|
|
//------------------------------------------------------------------
|
|
static void Initialize();
|
|
|
|
static void Terminate();
|
|
|
|
static lldb_private::ConstString GetPluginNameStatic();
|
|
|
|
static const char *GetPluginDescriptionStatic();
|
|
|
|
static lldb_private::SymbolFile *
|
|
CreateInstance(lldb_private::ObjectFile *obj_file);
|
|
|
|
uint32_t CalculateAbilities() override;
|
|
|
|
//------------------------------------------------------------------
|
|
// Compile Unit function calls
|
|
//------------------------------------------------------------------
|
|
uint32_t GetNumCompileUnits() override;
|
|
|
|
lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override;
|
|
|
|
lldb::LanguageType
|
|
ParseCompileUnitLanguage(const lldb_private::SymbolContext &sc) override;
|
|
|
|
size_t
|
|
ParseCompileUnitFunctions(const lldb_private::SymbolContext &sc) override;
|
|
|
|
bool
|
|
ParseCompileUnitLineTable(const lldb_private::SymbolContext &sc) override;
|
|
|
|
bool
|
|
ParseCompileUnitDebugMacros(const lldb_private::SymbolContext &sc) override;
|
|
|
|
bool ParseCompileUnitSupportFiles(
|
|
const lldb_private::SymbolContext &sc,
|
|
lldb_private::FileSpecList &support_files) override;
|
|
|
|
bool ParseImportedModules(
|
|
const lldb_private::SymbolContext &sc,
|
|
std::vector<lldb_private::ConstString> &imported_modules) override;
|
|
|
|
size_t ParseFunctionBlocks(const lldb_private::SymbolContext &sc) override;
|
|
|
|
size_t ParseTypes(const lldb_private::SymbolContext &sc) override;
|
|
|
|
size_t
|
|
ParseVariablesForContext(const lldb_private::SymbolContext &sc) override;
|
|
|
|
lldb_private::Type *ResolveTypeUID(lldb::user_id_t type_uid) override;
|
|
llvm::Optional<ArrayInfo> GetDynamicArrayInfoForUID(
|
|
lldb::user_id_t type_uid,
|
|
const lldb_private::ExecutionContext *exe_ctx) override;
|
|
|
|
bool CompleteType(lldb_private::CompilerType &compiler_type) override;
|
|
|
|
uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr,
|
|
lldb::SymbolContextItem resolve_scope,
|
|
lldb_private::SymbolContext &sc) override;
|
|
|
|
size_t GetTypes(lldb_private::SymbolContextScope *sc_scope,
|
|
lldb::TypeClass type_mask,
|
|
lldb_private::TypeList &type_list) override;
|
|
|
|
//------------------------------------------------------------------
|
|
// PluginInterface protocol
|
|
//------------------------------------------------------------------
|
|
lldb_private::ConstString GetPluginName() override;
|
|
|
|
uint32_t GetPluginVersion() override;
|
|
|
|
protected:
|
|
typedef std::map<lldb_private::ConstString, lldb::TypeSP> TypeMap;
|
|
|
|
lldb_private::Symtab::IndexCollection m_source_indexes;
|
|
lldb_private::Symtab::IndexCollection m_func_indexes;
|
|
lldb_private::Symtab::IndexCollection m_code_indexes;
|
|
lldb_private::Symtab::IndexCollection m_data_indexes;
|
|
lldb_private::Symtab::NameToIndexMap m_objc_class_name_to_index;
|
|
TypeMap m_objc_class_types;
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(SymbolFileSymtab);
|
|
};
|
|
|
|
#endif // liblldb_SymbolFileSymtab_h_
|