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Fix an invalid static cast in ClangExpressionParser.cpp 

This was found by the green dragon sanitizer bot.

rdar://problem/48536644

Differential Revision: https://reviews.llvm.org/D59314

llvm-svn: 356090
This commit is contained in:
Adrian Prantl 2019-03-13 19:46:30 +00:00
parent 74a04e80c8
commit 7e34d78da1
16 changed files with 82 additions and 20 deletions
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21
lldb/include/lldb/Expression/Expression.h
View File

@ -34,11 +34,22 @@ class RecordingMemoryManager;
//----------------------------------------------------------------------
class Expression {
public:
/// Discriminator for LLVM-style RTTI (dyn_cast<> et al.)
enum ExpressionKind {
eKindFunctionCaller,
eKindClangFunctionCaller,
eKindUserExpression,
eKindLLVMUserExpression,
eKindClangUserExpression,
eKindUtilityFunction,
eKindClangUtilityFunction,
};
enum ResultType { eResultTypeAny, eResultTypeId };
Expression(Target &target);
Expression(Target &target, ExpressionKind kind);
Expression(ExecutionContextScope &exe_scope);
Expression(ExecutionContextScope &exe_scope, ExpressionKind kind);
//------------------------------------------------------------------
/// Destructor
@ -103,6 +114,12 @@ public:
virtual ExpressionTypeSystemHelper *GetTypeSystemHelper() { return nullptr; }
/// LLVM-style RTTI support.
ExpressionKind getKind() const { return m_kind; }
private:
/// LLVM-style RTTI support.
const ExpressionKind m_kind;
protected:
lldb::TargetWP m_target_wp; /// Expression's always have to have a target...
lldb::ProcessWP m_jit_process_wp; /// An expression might have a process, but

5
lldb/include/lldb/Expression/FunctionCaller.h
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@ -57,6 +57,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class FunctionCaller : public Expression {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindFunctionCaller;
}
//------------------------------------------------------------------
/// Constructor
///

8
lldb/include/lldb/Expression/LLVMUserExpression.h
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@ -33,6 +33,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class LLVMUserExpression : public UserExpression {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindLLVMUserExpression;
}
// The IRPasses struct is filled in by a runtime after an expression is
// compiled and can be used to to run fixups/analysis passes as required.
// EarlyPasses are run on the generated module before lldb runs its own IR
@ -48,7 +53,8 @@ public:
LLVMUserExpression(ExecutionContextScope &exe_scope, llvm::StringRef expr,
llvm::StringRef prefix, lldb::LanguageType language,
ResultType desired_type,
const EvaluateExpressionOptions &options);
const EvaluateExpressionOptions &options,
ExpressionKind kind);
~LLVMUserExpression() override;
bool FinalizeJITExecution(

8
lldb/include/lldb/Expression/UserExpression.h
View File

@ -36,6 +36,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class UserExpression : public Expression {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindUserExpression;
}
enum { kDefaultTimeout = 500000u };
//------------------------------------------------------------------
@ -60,7 +65,8 @@ public:
UserExpression(ExecutionContextScope &exe_scope, llvm::StringRef expr,
llvm::StringRef prefix, lldb::LanguageType language,
ResultType desired_type,
const EvaluateExpressionOptions &options);
const EvaluateExpressionOptions &options,
ExpressionKind kind);
//------------------------------------------------------------------
/// Destructor

7
lldb/include/lldb/Expression/UtilityFunction.h
View File

@ -31,6 +31,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class UtilityFunction : public Expression {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindUtilityFunction;
}
//------------------------------------------------------------------
/// Constructor
///
@ -41,7 +46,7 @@ public:
/// The name of the function, as used in the text.
//------------------------------------------------------------------
UtilityFunction(ExecutionContextScope &exe_scope, const char *text,
const char *name);
const char *name, ExpressionKind kind);
~UtilityFunction() override;

10
lldb/source/Expression/Expression.cpp
View File

@ -12,16 +12,18 @@
using namespace lldb_private;
Expression::Expression(Target &target)
: m_target_wp(target.shared_from_this()),
Expression::Expression(Target &target, ExpressionKind kind)
: m_kind(kind),
m_target_wp(target.shared_from_this()),
m_jit_start_addr(LLDB_INVALID_ADDRESS),
m_jit_end_addr(LLDB_INVALID_ADDRESS) {
// Can't make any kind of expression without a target.
assert(m_target_wp.lock());
}
Expression::Expression(ExecutionContextScope &exe_scope)
: m_target_wp(exe_scope.CalculateTarget()),
Expression::Expression(ExecutionContextScope &exe_scope, ExpressionKind kind)
: m_kind(kind),
m_target_wp(exe_scope.CalculateTarget()),
m_jit_start_addr(LLDB_INVALID_ADDRESS),
m_jit_end_addr(LLDB_INVALID_ADDRESS) {
assert(m_target_wp.lock());

3
lldb/source/Expression/FunctionCaller.cpp
View File

@ -37,7 +37,8 @@ FunctionCaller::FunctionCaller(ExecutionContextScope &exe_scope,
const Address &functionAddress,
const ValueList &arg_value_list,
const char *name)
: Expression(exe_scope), m_execution_unit_sp(), m_parser(),
: Expression(exe_scope, eKindFunctionCaller),
m_execution_unit_sp(), m_parser(),
m_jit_module_wp(), m_name(name ? name : "<unknown>"),
m_function_ptr(NULL), m_function_addr(functionAddress),
m_function_return_type(return_type),

6
lldb/source/Expression/LLVMUserExpression.cpp
View File

@ -41,8 +41,10 @@ LLVMUserExpression::LLVMUserExpression(ExecutionContextScope &exe_scope,
llvm::StringRef prefix,
lldb::LanguageType language,
ResultType desired_type,
const EvaluateExpressionOptions &options)
: UserExpression(exe_scope, expr, prefix, language, desired_type, options),
const EvaluateExpressionOptions &options,
ExpressionKind kind)
: UserExpression(exe_scope, expr, prefix, language, desired_type, options,
kind),
m_stack_frame_bottom(LLDB_INVALID_ADDRESS),
m_stack_frame_top(LLDB_INVALID_ADDRESS), m_allow_cxx(false),
m_allow_objc(false), m_transformed_text(), m_execution_unit_sp(),

5
lldb/source/Expression/UserExpression.cpp
View File

@ -48,8 +48,9 @@ UserExpression::UserExpression(ExecutionContextScope &exe_scope,
llvm::StringRef expr, llvm::StringRef prefix,
lldb::LanguageType language,
ResultType desired_type,
const EvaluateExpressionOptions &options)
: Expression(exe_scope), m_expr_text(expr), m_expr_prefix(prefix),
const EvaluateExpressionOptions &options,
ExpressionKind kind)
: Expression(exe_scope, kind), m_expr_text(expr), m_expr_prefix(prefix),
m_language(language), m_desired_type(desired_type), m_options(options) {}
UserExpression::~UserExpression() {}

6
lldb/source/Expression/UtilityFunction.cpp
View File

@ -39,8 +39,10 @@ using namespace lldb;
/// The name of the function, as used in the text.
//------------------------------------------------------------------
UtilityFunction::UtilityFunction(ExecutionContextScope &exe_scope,
const char *text, const char *name)
: Expression(exe_scope), m_execution_unit_sp(), m_jit_module_wp(),
const char *text, const char *name,
ExpressionKind kind)
: Expression(exe_scope, kind),
m_execution_unit_sp(), m_jit_module_wp(),
m_function_text(),
m_function_name(name) {}

4
lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
View File

@ -492,8 +492,8 @@ ClangExpressionParser::ClangExpressionParser(
// long time parsing and importing debug information.
lang_opts.SpellChecking = false;
auto &clang_expr = *static_cast<ClangUserExpression *>(&m_expr);
if (clang_expr.DidImportCxxModules()) {
auto *clang_expr = dyn_cast<ClangUserExpression>(&m_expr);
if (clang_expr && clang_expr->DidImportCxxModules()) {
LLDB_LOG(log, "Adding lang options for importing C++ modules");
lang_opts.Modules = true;

5
lldb/source/Plugins/ExpressionParser/Clang/ClangFunctionCaller.h
View File

@ -61,6 +61,11 @@ class ClangExpressionParser;
class ClangFunctionCaller : public FunctionCaller {
friend class ASTStructExtractor;
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindClangFunctionCaller;
}
class ClangFunctionCallerHelper : public ClangExpressionHelper {
public:
ClangFunctionCallerHelper(ClangFunctionCaller &owner) : m_owner(owner) {}

2
lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
View File

@ -64,7 +64,7 @@ ClangUserExpression::ClangUserExpression(
ResultType desired_type, const EvaluateExpressionOptions &options,
ValueObject *ctx_obj)
: LLVMUserExpression(exe_scope, expr, prefix, language, desired_type,
options),
options, eKindClangUserExpression),
m_type_system_helper(*m_target_wp.lock(), options.GetExecutionPolicy() ==
eExecutionPolicyTopLevel),
m_result_delegate(exe_scope.CalculateTarget()), m_ctx_obj(ctx_obj) {

5
lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.h
View File

@ -40,6 +40,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class ClangUserExpression : public LLVMUserExpression {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindClangUserExpression;
}
enum { kDefaultTimeout = 500000u };
class ClangUserExpressionHelper : public ClangExpressionHelper {

2
lldb/source/Plugins/ExpressionParser/Clang/ClangUtilityFunction.cpp
View File

@ -40,7 +40,7 @@ using namespace lldb_private;
//------------------------------------------------------------------
ClangUtilityFunction::ClangUtilityFunction(ExecutionContextScope &exe_scope,
const char *text, const char *name)
: UtilityFunction(exe_scope, text, name) {
: UtilityFunction(exe_scope, text, name, eKindClangUtilityFunction) {
m_function_text.assign(ClangExpressionSourceCode::g_expression_prefix);
if (text && text[0])
m_function_text.append(text);

5
lldb/source/Plugins/ExpressionParser/Clang/ClangUtilityFunction.h
View File

@ -36,6 +36,11 @@ namespace lldb_private {
//----------------------------------------------------------------------
class ClangUtilityFunction : public UtilityFunction {
public:
/// LLVM-style RTTI support.
static bool classof(const Expression *E) {
return E->getKind() == eKindClangUtilityFunction;
}
class ClangUtilityFunctionHelper : public ClangExpressionHelper {
public:
ClangUtilityFunctionHelper() {}