Yes, using **pb::*;* seems to fix the issue. Would that be a more appropriate change if I'm trying to patch the copy I'm building?
On Friday, June 7, 2024 at 2:50:24 PM UTC-7 Adam Cozzette wrote: > Does putting an asterisk in front of pb::* here > <https://github.com/protocolbuffers/protobuf/blob/54d8f03974c108ef8fd0f26568cd9eb086165568/src/libprotobuf.map#L5> > > fix the problem? I think we're trying to export everything under the pb > namespace, but for some reason the type info for pb::CppFeatures is not > getting exported. > > On Thu, Jun 6, 2024 at 5:04 PM 'Ky Waegel' via Protocol Buffers < > [email protected]> wrote: > >> I've been working to build Protobuf with ASan and/or UBSan support >> (mostly for compatibility with a containing project), and I've been running >> into some weird symbol visibility errors. Example trying to run `protoc` >> with "-fsanitize=address" enabled: >> >> protobuf-27.1/libprotoc.so.27.1.0: undefined symbol: >> _ZTIN2pb11CppFeaturesE >> >> I initially thought this was just a weird quirk in my build system, but >> then I discovered this patch >> <https://fossies.org/linux/mysql/extra/protobuf/protobuf-24.4/src/libprotobuf.map> >> >> to a vendored copy of Protobuf inside of MySQL 8.4.0 that reference the >> same symbol, mentions that the change is required for UBSan support, and >> fixes my symbol issue. >> >> Anyone know what's going on here? Asking here before filing a bug because >> I'm not entirely sure if this is a bug, or of I'm (ab)using the build flags >> somehow. >> >> (Initially ran into this with v24.3, but the same thing happens with >> v27.1.) >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Protocol Buffers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/protobuf/69654ee7-b09e-405c-b9ad-d5ad8709f1b8n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/protobuf/69654ee7-b09e-405c-b9ad-d5ad8709f1b8n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/protobuf/097ad09f-ef62-4ac5-b356-a0153d4c2c99n%40googlegroups.com.
