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Mono/C#: Fix false positive in unsafe reference checks

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This commit is contained in:
Ignacio Etcheverry 2020-01-15 23:46:42 +01:00
parent 5f99e3396f
commit 1a40f250bd
1 changed files with 15 additions and 2 deletions
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17
modules/mono/csharp_script.cpp
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@ -2134,6 +2134,17 @@ CSharpInstance::~CSharpInstance() {
// Transfer ownership to an "instance binding"
Reference *ref_owner = static_cast<Reference *>(owner);
// We will unreference the owner before referencing it again, so we need to keep it alive
Ref<Reference> scope_keep_owner_alive(ref_owner);
(void)scope_keep_owner_alive;
// Unreference the owner here, before the new "instance binding" references it.
// Otherwise, the unsafe reference debug checks will incorrectly detect a bug.
bool die = _unreference_owner_unsafe();
CRASH_COND(die == true); // `owner_keep_alive` holds a reference, so it can't die
void *data = owner->get_script_instance_binding(CSharpLanguage::get_singleton()->get_language_index());
CRASH_COND(data == NULL);
@ -2149,8 +2160,10 @@ CSharpInstance::~CSharpInstance() {
}
}
bool die = _unreference_owner_unsafe();
CRASH_COND(die == true); // The "instance binding" should be holding a reference
#ifdef DEBUG_ENABLED
// The "instance binding" holds a reference so the refcount should be at least 2 before `scope_keep_owner_alive` goes out of scope
CRASH_COND(ref_owner->reference_get_count() <= 1);
#endif
}
if (script.is_valid() && owner) {