Protobuf crash on launching ios app

[ching-yen lin]

Hi

I have a problem on running protobuf on the iOS app.

It crash after open the app on TestFlight but not in development.

(it was crashing in development before I update iOS)

I want to ask if everyone else see this before and help me up.

Here are some info

**What version of protobuf and what language are you using?**

Version: 26.1 latest
Language: C++

(it was happen on the 21.4 and I update it to 26.1)

**What operating system (Linux, Windows, ...) and version?**
iOS 17.4.1

**What runtime / compiler are you using (e.g., python version or gcc version)**  
apple clang on Xcode 15.3

it is built as lib(.a) and include in the project

**What did you do?**
Steps to reproduce the behavior:
1. download the app from TestFlight
2. open the app
3. crash

**Anything else we should know about your project / environment**
It is Unreal project 5.3.1

call stack



This is the call stack that I comment out the SharedDtor(); in ~FileDescriptorProto()

I add some defines to compile the protobuf to lib

#define ABSL_INTERNAL_HAS_RTTI 0

#define PROTOBUF_BUILTIN_ATOMIC 0

#define PROTOBUF_ENABLE_DEBUG_LOGGING_MAY_LEAK_PII 0

Thanks