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Fix crash on signal/resume to dangling target

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Fixes #22443.
This commit is contained in:
Pedro J. Estébanez 2018-10-17 20:36:47 +02:00
parent fe0db6c479
commit 54bdc1e1f6
4 changed files with 46 additions and 43 deletions
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20
modules/gdscript/gdscript_compiler.cpp
View file

@ -1603,13 +1603,13 @@ Error GDScriptCompiler::_parse_block(CodeGen &codegen, const GDScriptParser::Blo
return OK; return OK;
} }
Error GDScriptCompiler::_parse_function(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready) { Error GDScriptCompiler::_parse_function(Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready) {
Vector<int> bytecode; Vector<int> bytecode;
CodeGen codegen; CodeGen codegen;
codegen.class_node = p_class; codegen.class_node = p_class;
codegen.script = p_script; codegen.script = p_script.ptr();
codegen.function_node = p_func; codegen.function_node = p_func;
codegen.stack_max = 0; codegen.stack_max = 0;
codegen.current_line = 0; codegen.current_line = 0;
@ -1853,7 +1853,7 @@ Error GDScriptCompiler::_parse_function(GDScript *p_script, const GDScriptParser
return OK; return OK;
} }
Error GDScriptCompiler::_parse_class_level(GDScript *p_script, GDScript *p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state) { Error GDScriptCompiler::_parse_class_level(Ref<GDScript> p_script, Ref<GDScript> p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state) {
if (p_class->owner && p_class->owner->owner) { if (p_class->owner && p_class->owner->owner) {
// Owner is not root // Owner is not root
@ -1887,7 +1887,7 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, GDScript *p_owner
p_script->initializer = NULL; p_script->initializer = NULL;
p_script->subclasses.clear(); p_script->subclasses.clear();
p_script->_owner = p_owner; p_script->_owner = p_owner.ptr();
p_script->tool = p_class->tool; p_script->tool = p_class->tool;
p_script->name = p_class->name; p_script->name = p_class->name;
@ -1994,7 +1994,7 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, GDScript *p_owner
StringName name = p_class->_signals[i].name; StringName name = p_class->_signals[i].name;
GDScript *c = p_script; GDScript *c = p_script.ptr();
while (c) { while (c) {
@ -2054,7 +2054,7 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, GDScript *p_owner
return OK; return OK;
} }
Error GDScriptCompiler::_parse_class_blocks(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state) { Error GDScriptCompiler::_parse_class_blocks(Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state) {
//parse methods //parse methods
bool has_initializer = false; bool has_initializer = false;
@ -2159,7 +2159,7 @@ Error GDScriptCompiler::_parse_class_blocks(GDScript *p_script, const GDScriptPa
return OK; return OK;
} }
void GDScriptCompiler::_make_scripts(const GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state) { void GDScriptCompiler::_make_scripts(const Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state) {
Map<StringName, Ref<GDScript> > old_subclasses; Map<StringName, Ref<GDScript> > old_subclasses;
@ -2178,20 +2178,20 @@ void GDScriptCompiler::_make_scripts(const GDScript *p_script, const GDScriptPar
subclass.instance(); subclass.instance();
} }
subclass->_owner = const_cast<GDScript *>(p_script); subclass->_owner = const_cast<GDScript *>(p_script.ptr());
class_map.insert(name, subclass); class_map.insert(name, subclass);
_make_scripts(subclass.ptr(), p_class->subclasses[i], p_keep_state); _make_scripts(subclass.ptr(), p_class->subclasses[i], p_keep_state);
} }
} }
Error GDScriptCompiler::compile(const GDScriptParser *p_parser, GDScript *p_script, bool p_keep_state) { Error GDScriptCompiler::compile(const GDScriptParser *p_parser, Ref<GDScript> p_script, bool p_keep_state) {
err_line = -1; err_line = -1;
err_column = -1; err_column = -1;
error = ""; error = "";
parser = p_parser; parser = p_parser;
main_script = p_script; main_script = p_script.ptr();
const GDScriptParser::Node *root = parser->get_parse_tree(); const GDScriptParser::Node *root = parser->get_parse_tree();
ERR_FAIL_COND_V(root->type != GDScriptParser::Node::TYPE_CLASS, ERR_INVALID_DATA); ERR_FAIL_COND_V(root->type != GDScriptParser::Node::TYPE_CLASS, ERR_INVALID_DATA);

10
modules/gdscript/gdscript_compiler.h
View file

@ -148,17 +148,17 @@ class GDScriptCompiler {
int _parse_assign_right_expression(CodeGen &codegen, const GDScriptParser::OperatorNode *p_expression, int p_stack_level); int _parse_assign_right_expression(CodeGen &codegen, const GDScriptParser::OperatorNode *p_expression, int p_stack_level);
int _parse_expression(CodeGen &codegen, const GDScriptParser::Node *p_expression, int p_stack_level, bool p_root = false, bool p_initializer = false); int _parse_expression(CodeGen &codegen, const GDScriptParser::Node *p_expression, int p_stack_level, bool p_root = false, bool p_initializer = false);
Error _parse_block(CodeGen &codegen, const GDScriptParser::BlockNode *p_block, int p_stack_level = 0, int p_break_addr = -1, int p_continue_addr = -1); Error _parse_block(CodeGen &codegen, const GDScriptParser::BlockNode *p_block, int p_stack_level = 0, int p_break_addr = -1, int p_continue_addr = -1);
Error _parse_function(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready = false); Error _parse_function(Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready = false);
Error _parse_class_level(GDScript *p_script, GDScript *p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state); Error _parse_class_level(Ref<GDScript> p_script, Ref<GDScript> p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
Error _parse_class_blocks(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state); Error _parse_class_blocks(Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
void _make_scripts(const GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state); void _make_scripts(const Ref<GDScript> p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
int err_line; int err_line;
int err_column; int err_column;
StringName source; StringName source;
String error; String error;
public: public:
Error compile(const GDScriptParser *p_parser, GDScript *p_script, bool p_keep_state = false); Error compile(const GDScriptParser *p_parser, Ref<GDScript> p_script, bool p_keep_state = false);
String get_error() const; String get_error() const;
int get_error_line() const; int get_error_line() const;

49
modules/gdscript/gdscript_function.cpp
View file

@ -275,7 +275,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
#endif #endif
uint32_t alloca_size = 0; uint32_t alloca_size = 0;
GDScript *_class; GDScript *script;
int ip = 0; int ip = 0;
int line = _initial_line; int line = _initial_line;
@ -286,7 +286,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
line = p_state->line; line = p_state->line;
ip = p_state->ip; ip = p_state->ip;
alloca_size = p_state->stack.size(); alloca_size = p_state->stack.size();
_class = p_state->_class; script = p_state->script.ptr();
p_instance = p_state->instance; p_instance = p_state->instance;
defarg = p_state->defarg; defarg = p_state->defarg;
self = p_state->self; self = p_state->self;
@ -368,9 +368,9 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
} else { } else {
self = p_instance->owner; self = p_instance->owner;
} }
_class = p_instance->script.ptr(); script = p_instance->script.ptr();
} else { } else {
_class = _script; script = this->_script.ptr();
} }
} }
@ -395,7 +395,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
#define GET_VARIANT_PTR(m_v, m_code_ofs) \ #define GET_VARIANT_PTR(m_v, m_code_ofs) \
Variant *m_v; \ Variant *m_v; \
m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, _class, self, stack, err_text); \ m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, script, self, stack, err_text); \
if (unlikely(!m_v)) \ if (unlikely(!m_v)) \
OPCODE_BREAK; OPCODE_BREAK;
@ -404,7 +404,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
#define CHECK_SPACE(m_space) #define CHECK_SPACE(m_space)
#define GET_VARIANT_PTR(m_v, m_code_ofs) \ #define GET_VARIANT_PTR(m_v, m_code_ofs) \
Variant *m_v; \ Variant *m_v; \
m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, _class, self, stack, err_text); m_v = _get_variant(_code_ptr[ip + m_code_ofs], p_instance, script, self, stack, err_text);
#endif #endif
@ -1185,7 +1185,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
GET_VARIANT_PTR(dst, argc + 3); GET_VARIANT_PTR(dst, argc + 3);
const GDScript *gds = _script; const GDScript *gds = _script.ptr();
const Map<StringName, GDScriptFunction *>::Element *E = NULL; const Map<StringName, GDScriptFunction *>::Element *E = NULL;
while (gds->base.ptr()) { while (gds->base.ptr()) {
@ -1256,11 +1256,10 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
gdfs->state.stack_size = _stack_size; gdfs->state.stack_size = _stack_size;
gdfs->state.self = self; gdfs->state.self = self;
gdfs->state.alloca_size = alloca_size; gdfs->state.alloca_size = alloca_size;
gdfs->state._class = _class; gdfs->state.script = _script;
gdfs->state.ip = ip + ipofs; gdfs->state.ip = ip + ipofs;
gdfs->state.line = line; gdfs->state.line = line;
gdfs->state.instance_id = (p_instance && p_instance->get_owner()) ? p_instance->get_owner()->get_instance_id() : 0; gdfs->state.instance_id = (p_instance && p_instance->get_owner()) ? p_instance->get_owner()->get_instance_id() : 0;
gdfs->state.script_id = _class->get_instance_id();
//gdfs->state.result_pos=ip+ipofs-1; //gdfs->state.result_pos=ip+ipofs-1;
gdfs->state.defarg = defarg; gdfs->state.defarg = defarg;
gdfs->state.instance = p_instance; gdfs->state.instance = p_instance;
@ -1549,8 +1548,8 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
String err_file; String err_file;
if (p_instance) if (p_instance)
err_file = p_instance->script->path; err_file = p_instance->script->path;
else if (_class) else if (script)
err_file = _class->path; err_file = script->path;
if (err_file == "") if (err_file == "")
err_file = "<built-in>"; err_file = "<built-in>";
String err_func = name; String err_func = name;
@ -1765,14 +1764,19 @@ GDScriptFunction::~GDScriptFunction() {
Variant GDScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) { Variant GDScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
#ifdef DEBUG_ENABLED #ifdef DEBUG_ENABLED
// Checking this first since it's faster
if (!state.script.is_valid()) {
ERR_EXPLAIN("Resumed after yield, but script is gone");
ERR_FAIL_V(Variant());
}
if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) { if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) {
ERR_EXPLAIN("Resumed after yield, but class instance is gone"); ERR_EXPLAIN("Resumed after yield, but class instance is gone");
ERR_FAIL_V(Variant()); ERR_FAIL_V(Variant());
} }
#else
if (state.script_id && !ObjectDB::get_instance(state.script_id)) { if (!is_valid()) {
ERR_EXPLAIN("Resumed after yield, but script is gone"); return Variant();
ERR_FAIL_V(Variant());
} }
#endif #endif
@ -1841,12 +1845,12 @@ bool GDScriptFunctionState::is_valid(bool p_extended_check) const {
return false; return false;
if (p_extended_check) { if (p_extended_check) {
//script gone? (checking this first since it's faster)
if (!state.script.is_valid())
return false;
//class instance gone? //class instance gone?
if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) if (state.instance_id && !ObjectDB::get_instance(state.instance_id))
return false; return false;
//script gone?
if (state.script_id && !ObjectDB::get_instance(state.script_id))
return false;
} }
return true; return true;
@ -1856,13 +1860,14 @@ Variant GDScriptFunctionState::resume(const Variant &p_arg) {
ERR_FAIL_COND_V(!function, Variant()); ERR_FAIL_COND_V(!function, Variant());
#ifdef DEBUG_ENABLED #ifdef DEBUG_ENABLED
if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) { // Checking this first since it's faster
ERR_EXPLAIN("Resumed after yield, but class instance is gone"); if (!state.script.is_valid()) {
ERR_EXPLAIN("Resumed after yield, but script is gone");
ERR_FAIL_V(Variant()); ERR_FAIL_V(Variant());
} }
if (state.script_id && !ObjectDB::get_instance(state.script_id)) { if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) {
ERR_EXPLAIN("Resumed after yield, but script is gone"); ERR_EXPLAIN("Resumed after yield, but class instance is gone");
ERR_FAIL_V(Variant()); ERR_FAIL_V(Variant());
} }
#endif #endif

10
modules/gdscript/gdscript_function.h
View file

@ -225,7 +225,7 @@ private:
bool _static; bool _static;
MultiplayerAPI::RPCMode rpc_mode; MultiplayerAPI::RPCMode rpc_mode;
GDScript *_script; Ref<GDScript> _script;
StringName name; StringName name;
Vector<Variant> constants; Vector<Variant> constants;
@ -272,15 +272,13 @@ private:
public: public:
struct CallState { struct CallState {
ObjectID instance_id; //by debug only ObjectID instance_id;
ObjectID script_id;
GDScriptInstance *instance; GDScriptInstance *instance;
Vector<uint8_t> stack; Vector<uint8_t> stack;
int stack_size; int stack_size;
Variant self; Variant self;
uint32_t alloca_size; uint32_t alloca_size;
GDScript *_class; Ref<GDScript> script;
int ip; int ip;
int line; int line;
int defarg; int defarg;
@ -299,7 +297,7 @@ public:
int get_default_argument_addr(int p_idx) const; int get_default_argument_addr(int p_idx) const;
GDScriptDataType get_return_type() const; GDScriptDataType get_return_type() const;
GDScriptDataType get_argument_type(int p_idx) const; GDScriptDataType get_argument_type(int p_idx) const;
GDScript *get_script() const { return _script; } GDScript *get_script() const { return const_cast<GDScript *>(_script.ptr()); }
StringName get_source() const { return source; } StringName get_source() const { return source; }
void debug_get_stack_member_state(int p_line, List<Pair<StringName, int> > *r_stackvars) const; void debug_get_stack_member_state(int p_line, List<Pair<StringName, int> > *r_stackvars) const;