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GDScript: Fix uninitialized local variables not being reset

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This commit is contained in:
Danil Alexeev
2024-03-28 21:57:56 +03:00
parent 86415f0245
commit 27d7760f41
10 changed files with 190 additions and 73 deletions
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19
modules/gdscript/gdscript_byte_codegen.h
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@@ -38,15 +38,14 @@
class GDScriptByteCodeGenerator : public GDScriptCodeGenerator {
struct StackSlot {
Variant::Type type = Variant::NIL;
bool can_contain_object = true;
Vector<int> bytecode_indices;
StackSlot() = default;
StackSlot(Variant::Type p_type) :
type(p_type) {}
StackSlot(Variant::Type p_type, bool p_can_contain_object) :
type(p_type), can_contain_object(p_can_contain_object) {}
};
const static int RESERVED_STACK = 3; // For self, class, and nil.
struct CallTarget {
Address target;
bool is_new_temporary = false;
@@ -85,9 +84,11 @@ class GDScriptByteCodeGenerator : public GDScriptCodeGenerator {
RBMap<StringName, int> local_constants;
Vector<StackSlot> locals;
HashSet<int> dirty_locals;
Vector<StackSlot> temporaries;
List<int> used_temporaries;
List<int> temporaries_pending_clear;
HashSet<int> temporaries_pending_clear;
RBMap<Variant::Type, List<int>> temporaries_pool;
List<GDScriptFunction::StackDebug> stack_debug;
@@ -193,6 +194,9 @@ class GDScriptByteCodeGenerator : public GDScriptCodeGenerator {
ERR_PRINT("Leaving block with non-zero temporary variables: " + itos(used_temporaries.size()));
}
#endif
for (int i = current_locals; i < locals.size(); i++) {
dirty_locals.insert(i + GDScriptFunction::FIXED_ADDRESSES_MAX);
}
locals.resize(current_locals);
if (debug_stack) {
for (const KeyValue<StringName, int> &E : block_identifiers) {
@@ -455,7 +459,9 @@ public:
virtual uint32_t add_or_get_name(const StringName &p_name) override;
virtual uint32_t add_temporary(const GDScriptDataType &p_type) override;
virtual void pop_temporary() override;
virtual void clean_temporaries() override;
virtual void clear_temporaries() override;
virtual void clear_address(const Address &p_address) override;
virtual bool is_local_dirty(const Address &p_address) const override;
virtual void start_parameters() override;
virtual void end_parameters() override;
@@ -496,6 +502,7 @@ public:
virtual void write_get_static_variable(const Address &p_target, const Address &p_class, int p_index) override;
virtual void write_assign(const Address &p_target, const Address &p_source) override;
virtual void write_assign_with_conversion(const Address &p_target, const Address &p_source) override;
virtual void write_assign_null(const Address &p_target) override;
virtual void write_assign_true(const Address &p_target) override;
virtual void write_assign_false(const Address &p_target) override;
virtual void write_assign_default_parameter(const Address &p_dst, const Address &p_src, bool p_use_conversion) override;