Bug 925502 – www-client/firefox-123.0: fails to link (MUSL-CLANG19): undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::push_back(char)

• Product: Gentoo Linux
• Status: RESOLVED DUPLICATE

[Description hugegameartgd 2024-02-25 19:22:17 UTC]

Created attachment 885984 [details]
build.log

www-client/firefox-123.0 (LLVM 17 slot) fails to compile with libc++-19 (musl/clang/merged-usr)

Steps to Reproduce:
emerge =sys-devel/clang-19*
emerge =sys-devel/clang-17*
- patch firefox-123.0.ebuild for linking with `-flto`:
https://bugs.gentoo.org/attachment.cgi?id=885959&action=diff

```
265:26.03 mold: error: undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::insert(unsigned long, char const*)
265:26.03 >>> referenced by ld-temp.o
265:26.04 >>>               /var/tmp/portage/www-client/firefox-123.0/temp/lto-llvm-3b39e5.o:(mozilla::ipc::GeckoChildProcessHost::AsyncLaunch(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>>))>>> referenced by ld-temp.o
265:26.04 >>>               /var/tmp/portage/www-client/firefox-123.0/temp/lto-llvm-3b39e5.o:(Json::Reader::decodeDouble(Json::Reader::Token&, Json::Value&))>>> referenced by ld-temp.o
265:26.04 >>>               /var/tmp/portage/www-client/firefox-123.0/temp/lto-llvm-3b39e5.o:(Json::OurCharReader::parse(char const*, char const*, Json::Value*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>*))>>> referenced 14 more times
265:26.04 mold: error: undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::insert(unsigned long, char const*, unsigned long)
265:26.04 >>> referenced by ld-temp.o
265:26.05 >>>               /var/tmp/portage/www-client/firefox-123.0/temp/lto-llvm-3b39e5.o>>> referenced by ld-temp.o
265:26.05 >>>               /var/tmp/portage/www-client/firefox-123.0/temp/lto-llvm-3b39e5.o
265:26.05 x86_64-gentoo-linux-musl-clang++-17: error: linker command failed with exit code 1 (use -v to see invocation)
265:26.12 gmake[4]: *** [/var/tmp/portage/www-client/firefox-123.0/work/firefox-123.0/config/rules.mk:541: libxul.so] Error 1
265:26.14 gmake[4]: Leaving directory '/var/tmp/portage/www-client/firefox-123.0/work/firefox_build/toolkit/library/build'
265:26.14 gmake[3]: *** [/var/tmp/portage/www-client/firefox-123.0/work/firefox-123.0/config/recurse.mk:72: toolkit/library/build/target] Error 2
265:26.20 gmake[3]: Leaving directory '/var/tmp/portage/www-client/firefox-123.0/work/firefox_build'
265:26.20 gmake[2]: *** [/var/tmp/portage/www-client/firefox-123.0/work/firefox-123.0/config/recurse.mk:34: compile] Error 2
265:26.23 gmake[2]: Leaving directory '/var/tmp/portage/www-client/firefox-123.0/work/firefox_build'
265:26.24 gmake[1]: *** [/var/tmp/portage/www-client/firefox-123.0/work/firefox-123.0/config/rules.mk:361: default] Error 2
265:26.26 gmake[1]: Leaving directory '/var/tmp/portage/www-client/firefox-123.0/work/firefox_build'
265:26.27 gmake: *** [client.mk:60: build] Error 2
```

emerge --info: https://bugs.gentoo.org/attachment.cgi?id=885960
emerge -pqv: https://bugs.gentoo.org/attachment.cgi?id=885961

[Comment 1 hugegameartgd 2024-02-25 19:24:41 UTC]

*** Bug 925492 has been marked as a duplicate of this bug. ***

[Comment 2 Sam James 2024-02-27 23:29:17 UTC]

We're _very_ early in the LLVM 19 cycle (6 months out) and given you've had two separate confusing issues here, not really sure it's worth reporting these so early to us.

Besides, the bug you linked is vimproved's, and we have bug 917694?

*** This bug has been marked as a duplicate of bug 917694 ***

[Comment 3 hugegameartgd 2024-03-02 13:15:46 UTC]

Created attachment 886522 [details, diff]
0002-gcc_hidden.patch

> We're _very_ early in the LLVM 19 cycle (6 months out)

Though this issue is also reproducible with LLVM 18 and libc++ according to vimproved's upstream bug report

> Besides, the bug you linked is vimproved's, and we have bug 917694?

Yes, bug 917694 is tracking two issues: "cannot find type `_Pred` in this scope" has been fixed upstream in firefox 123-0, for the second libc++ std::basic_string error (which I've reported in this issue) vimproved sent a patch via Discord: `0002-gcc_hidden.patch`

[Comment 4 hugegameartgd 2024-03-17 14:54:47 UTC]

*** This bug has been marked as a duplicate of bug 927148 ***