Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 879893 - sys-apps/ethq-0.6.1 fails tests (LTO-SYSTEM)
Summary: sys-apps/ethq-0.6.1 fails tests (LTO-SYSTEM)
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Vladimir Pavljuchenkov (SpiderX)
Depends on:
Blocks: lto
  Show dependency tree
Reported: 2022-11-05 16:55 UTC by Agostino Sarubbo
Modified: 2022-11-05 16:55 UTC (History)
1 user (show)

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

build.log (build.log,46.43 KB, text/plain)
2022-11-05 16:55 UTC, Agostino Sarubbo

Note You need to log in before you can comment on or make changes to this bug.
Description Agostino Sarubbo gentoo-dev 2022-11-05 16:55:23 UTC

Issue: sys-apps/ethq-0.6.1 fails tests (LTO-SYSTEM).
Discovered on: amd64 (internal ref: lto_tinderbox)

(LTO-SYSTEM) in the summary means that bug was found on a machine that runs lto but this bug MAY or MAY NOT BE related to lto.

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

Here is a bit of explanation:

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.

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

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

- 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:
Comment 1 Agostino Sarubbo gentoo-dev 2022-11-05 16:55:25 UTC
Created attachment 827853 [details]

build log and emerge --info
Comment 2 Agostino Sarubbo gentoo-dev 2022-11-05 16:55:27 UTC
Error(s) that match a know pattern:

/var/tmp/portage/sys-apps/ethq-0.6.1/temp/environment: line 1263:    26 Segmentation fault      "${S}"/ethq_test "${driver##*/}" "${driver}"
Comment 3 Agostino Sarubbo gentoo-dev 2022-11-05 16:55:50 UTC
dmesg also reports:

[Sat Nov  5 13:14:25 2022] ethq_test[476]: segfault at 8 ip 00007f5f716165ea sp 00007ffeda89ea48 error 4 in[7f5f715ef000+104000]