Bug 917046

Summary:	dev-libs/protobuf-23.3: messages_lite.h has hidden extern template instances
Product:	Gentoo Linux	Reporter:	Allen Webb <allenwebb>
Component:	Current packages	Assignee:	Arfrever Frehtes Taifersar Arahesis <arfrever.fta>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	allenwebb, cjk
Priority:	Normal	Keywords:	PATCH, PullRequest
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://github.com/gentoo/gentoo/pull/33793
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	912819

Description Allen Webb 2023-11-08 20:38:50 UTC

We ran into this on ChromeOS:

```
missive-9999: ld.lld: error: undefined symbol: bool google::protobuf::internal::MergeFromImpl<true>(std::__1::basic_string_view<char, std::__1::char_traits<char>>, google::protobuf::MessageLite*, google::protobuf::MessageLite::ParseFlags)
missive-9999: >>> referenced by message_lite.h:583 (/build/brya/usr/include/google/protobuf/message_lite.h:583)
```

I landed an upstream fix here that you all might want to include as a patch in protobuf 23.3 and on until it is included by default:
https://github.com/protocolbuffers/protobuf/commit/e6f8b9d1026996f6463d4f014d7760256b757227

Reproducible: Always