Pass message_factory to reflection->GetMessage in cel::Value::WrapField. - #2186
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Inside WrapFieldImpl in value.cc, CEL called reflection->GetMessage(*message, field) without passing message_factory as the 3rd argument. When message is a compiled C++ GeneratedMessage, Protobuf reflection defaulted factory to MessageFactory::generated_factory(). If field is an extension whose descriptor lives in a dynamic DescriptorPool, generated_factory()->GetPrototype(extension_desc) returns nullptr, causing a SIGSEGV (@(nil)) in ExtensionSet::GetMessage(). This CL passes message_factory to reflection->GetMessage(*message, field, message_factory) so Protobuf reflection uses CEL's MessageFactory to resolve dynamic extensions. PiperOrigin-RevId: 957173111
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Pass message_factory to reflection->GetMessage in cel::Value::WrapField.
Inside WrapFieldImpl in value.cc, CEL called reflection->GetMessage(*message, field)
without passing message_factory as the 3rd argument. When message is a compiled C++
GeneratedMessage, Protobuf reflection defaulted factory to MessageFactory::generated_factory().
If field is an extension whose descriptor lives in a dynamic DescriptorPool,
generated_factory()->GetPrototype(extension_desc) returns nullptr, causing a
SIGSEGV (@(nil)) in ExtensionSet::GetMessage().
This CL passes message_factory to reflection->GetMessage(*message, field, message_factory)
so Protobuf reflection uses CEL's MessageFactory to resolve dynamic extensions.