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Bug 877669 - net-p2p/arti-1.0.1 fails to compile (lto): undefined reference to ZSTD_createDCtx
Summary: net-p2p/arti-1.0.1 fails to compile (lto): undefined reference to ZSTD_create...
Status: CONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: John Helmert III
URL: https://github.com/gyscos/zstd-rs/iss...
Whiteboard:
Keywords:
Depends on:
Blocks: lto
  Show dependency tree
 
Reported: 2022-10-19 17:04 UTC by Agostino Sarubbo
Modified: 2022-12-28 18:56 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


Attachments
build.log (build.log,440.93 KB, text/plain)
2022-10-19 17:04 UTC, Agostino Sarubbo
Details

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Description Agostino Sarubbo gentoo-dev 2022-10-19 17:04:09 UTC
https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: net-p2p/arti-1.0.1 fails to compile (lto).
Discovered on: amd64 (internal ref: lto_tinderbox)

NOTE:
This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing

Here is a bit of explanation:

-Werror=lto-type-mismatch:
User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO.
For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase.

-Werror=odr:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule.

-Werror=strict-aliasing:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO.

Workarounds:
- If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL).
- Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr).
- Fix it yourself if interested, of course (VALID FOR ALL).
- Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing).
- Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing).
- -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing).

See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
Comment 1 Agostino Sarubbo gentoo-dev 2022-10-19 17:04:12 UTC
Created attachment 824767 [details]
build.log

build log and emerge --info
Comment 2 Agostino Sarubbo gentoo-dev 2022-10-19 17:04:14 UTC
Error(s) that match a know pattern in addition to what has been reported in the summary:


          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN125_$LT$async_compression..futures..bufread..generic..decoder..Decoder$LT$R$C$D$GT$$u20$as$u20$futures_io..if_std..AsyncRead$GT$9poll_read17h12c36391c96ce691E+0x115): undefined reference to `ZSTD_isError'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN125_$LT$async_compression..futures..bufread..generic..decoder..Decoder$LT$R$C$D$GT$$u20$as$u20$futures_io..if_std..AsyncRead$GT$9poll_read17h12c36391c96ce691E+0x1a2): undefined reference to `ZSTD_DCtx_reset'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN125_$LT$async_compression..futures..bufread..generic..decoder..Decoder$LT$R$C$D$GT$$u20$as$u20$futures_io..if_std..AsyncRead$GT$9poll_read17h12c36391c96ce691E+0x1ae): undefined reference to `ZSTD_isError'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN97_$LT$core..future..from_generator..GenFuture$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$4poll17ha4ee1d2ffa8f4a49E+0x3011): undefined reference to `ZSTD_initDStream'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN97_$LT$core..future..from_generator..GenFuture$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$4poll17ha4ee1d2ffa8f4a49E+0x3023): undefined reference to `ZSTD_DCtx_loadDictionary'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN97_$LT$core..future..from_generator..GenFuture$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$4poll17ha4ee1d2ffa8f4a49E+0x302f): undefined reference to `ZSTD_isError'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: arti.86aabb0b-cgu.0:(.text._ZN97_$LT$core..future..from_generator..GenFuture$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$4poll17ha4ee1d2ffa8f4a49E+0x3a41): undefined reference to `ZSTD_freeDCtx'
          arti.86aabb0b-cgu.0:(.text._ZN125_$LT$async_compression..futures..bufread..generic..decoder..Decoder$LT$R$C$D$GT$$u20$as$u20$futures_io..if_std..AsyncRead$GT$9poll_read17h12c36391c96ce691E+0x109): undefined reference to `ZSTD_decompressStream'
          arti.86aabb0b-cgu.0:(.text._ZN4core3ptr171drop_in_place$LT$async_compression..futures..bufread..ZstdDecoder$LT$futures_util..io..buf_reader..BufReader$LT$$RF$mut$u20$tor_proto..stream..data..DataStream$GT$$GT$$GT$17haac2c5949d341d59E+0x1c): undefined reference to `ZSTD_freeDCtx'
          arti.86aabb0b-cgu.0:(.text._ZN4core3ptr36drop_in_place$LT$zstd_safe..DCtx$GT$17h926c7dd7d5c9bdc4E+0x5): undefined reference to `ZSTD_freeDCtx'
          arti.86aabb0b-cgu.0:(.text._ZN4zstd14map_error_code17h9a6cefee9b962b85E+0xb): undefined reference to `ZSTD_getErrorName'
          arti.86aabb0b-cgu.0:(.text._ZN97_$LT$core..future..from_generator..GenFuture$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$4poll17ha4ee1d2ffa8f4a49E+0x2ff4): undefined reference to `ZSTD_createDCtx'
error: linking with `x86_64-pc-linux-gnu-gcc` failed: exit status: 1
Comment 3 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-12-28 18:56:20 UTC
Seems like the issue is more with the upstream zstd crate.