From 06b6cea62ec8c413389c7d9543e2c0eb587d527a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pedro=20J=2E=20Est=C3=A9banez?= Date: Sun, 25 Nov 2018 12:38:12 +0100 Subject: [PATCH] Fix crash on signal/resume to dangling target --- modules/gdscript/gdscript_function.cpp | 44 ++++++++++---------------- modules/gdscript/gdscript_function.h | 6 ++-- 2 files changed, 19 insertions(+), 31 deletions(-) diff --git a/modules/gdscript/gdscript_function.cpp b/modules/gdscript/gdscript_function.cpp index f09ff224e8..5d23c19342 100644 --- a/modules/gdscript/gdscript_function.cpp +++ b/modules/gdscript/gdscript_function.cpp @@ -275,7 +275,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a #endif uint32_t alloca_size = 0; - GDScript *_class; + GDScript *script; int ip = 0; int line = _initial_line; @@ -286,7 +286,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a line = p_state->line; ip = p_state->ip; alloca_size = p_state->stack.size(); - _class = p_state->_class; + script = p_state->script.ptr(); p_instance = p_state->instance; defarg = p_state->defarg; self = p_state->self; @@ -368,9 +368,9 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a } else { self = p_instance->owner; } - _class = p_instance->script.ptr(); + script = p_instance->script.ptr(); } else { - _class = _script; + script = _script; } } @@ -395,7 +395,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a #define GET_VARIANT_PTR(m_v, m_code_ofs) \ 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)) \ OPCODE_BREAK; @@ -404,7 +404,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a #define CHECK_SPACE(m_space) #define GET_VARIANT_PTR(m_v, m_code_ofs) \ 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 @@ -1256,11 +1256,10 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a gdfs->state.stack_size = _stack_size; gdfs->state.self = self; gdfs->state.alloca_size = alloca_size; - gdfs->state._class = _class; + gdfs->state.script = Ref(_script); gdfs->state.ip = ip + ipofs; gdfs->state.line = line; 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.defarg = defarg; gdfs->state.instance = p_instance; @@ -1549,8 +1548,8 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a String err_file; if (p_instance) err_file = p_instance->script->path; - else if (_class) - err_file = _class->path; + else if (script) + err_file = script->path; if (err_file == "") err_file = ""; String err_func = name; @@ -1764,17 +1763,14 @@ GDScriptFunction::~GDScriptFunction() { Variant GDScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) { -#ifdef DEBUG_ENABLED if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) { +#ifdef DEBUG_ENABLED ERR_EXPLAIN("Resumed after yield, but class instance is gone"); ERR_FAIL_V(Variant()); - } - - if (state.script_id && !ObjectDB::get_instance(state.script_id)) { - ERR_EXPLAIN("Resumed after yield, but script is gone"); - ERR_FAIL_V(Variant()); - } +#else + return Variant(); #endif + } Variant arg; r_error.error = Variant::CallError::CALL_OK; @@ -1844,9 +1840,6 @@ bool GDScriptFunctionState::is_valid(bool p_extended_check) const { //class instance gone? if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) return false; - //script gone? - if (state.script_id && !ObjectDB::get_instance(state.script_id)) - return false; } return true; @@ -1855,17 +1848,14 @@ bool GDScriptFunctionState::is_valid(bool p_extended_check) const { Variant GDScriptFunctionState::resume(const Variant &p_arg) { ERR_FAIL_COND_V(!function, Variant()); -#ifdef DEBUG_ENABLED if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) { +#ifdef DEBUG_ENABLED ERR_EXPLAIN("Resumed after yield, but class instance is gone"); ERR_FAIL_V(Variant()); - } - - if (state.script_id && !ObjectDB::get_instance(state.script_id)) { - ERR_EXPLAIN("Resumed after yield, but script is gone"); - ERR_FAIL_V(Variant()); - } +#else + return Variant(); #endif + } state.result = p_arg; Variant::CallError err; diff --git a/modules/gdscript/gdscript_function.h b/modules/gdscript/gdscript_function.h index bfb6d673f1..5509edf24a 100644 --- a/modules/gdscript/gdscript_function.h +++ b/modules/gdscript/gdscript_function.h @@ -272,15 +272,13 @@ private: public: struct CallState { - ObjectID instance_id; //by debug only - ObjectID script_id; - + ObjectID instance_id; GDScriptInstance *instance; Vector stack; int stack_size; Variant self; uint32_t alloca_size; - GDScript *_class; + Ref script; int ip; int line; int defarg;