675876 – sys-devel/gcc: -Wl,--wrap not supported with LTO

Bug 675876 - sys-devel/gcc: -Wl,--wrap not supported with LTO

Summary: sys-devel/gcc: -Wl,--wrap not supported with LTO

Status:	RESOLVED UPSTREAM

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	Current packages (show other bugs)
Hardware:	All Linux

Importance:	Normal normal
Assignee:	Gentoo Toolchain Maintainers

URL:
Whiteboard:	was: dev-util/cmocka-1.1.3 - ld: .../...
Keywords:

Duplicates (10):	729772 802762 865275 865277 865279 865997 871999 877741 877755 943725 (view as bug list)
Depends on:
Blocks:	systemwide-gold lto
	Show dependency tree

Reported:	2019-01-19 20:20 UTC by cryptopsy
Modified:	2025-02-23 02:22 UTC (History)
CC List:	5 users (show)

See Also:	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88643 https://sourceware.org/bugzilla/show_bug.cgi?id=24415 https://sourceware.org/bugzilla/show_bug.cgi?id=31956
Package list:
Runtime testing required:	---

Attachments
build.log (dev-util:cmocka-1.1.3:20190119-214616.log,50.11 KB, text/plain) 2019-01-19 20:20 UTC, cryptopsy	Details
emerge --info (info,5.67 KB, text/plain) 2019-01-19 20:20 UTC, cryptopsy	Details
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Description cryptopsy 2019-01-19 20:20:18 UTC

Created attachment 562208 [details]
build.log

compiles fine without LTO

Comment 1 cryptopsy 2019-01-19 20:20:51 UTC

Created attachment 562210 [details]
emerge --info

Comment 2 Sergei Trofimovich (RETIRED) gentoo-dev

2019-01-21 22:36:07 UTC

> CFLAGS="-march=native -O3 -pipe -flto -floop-interchange -floop-strip-mine -floop-block -fgraphite-identity -mindirect-branch=thunk -mindirect-branch-register"
> CXXFLAGS="-march=native -O3 -pipe -flto -floop-interchange -floop-strip-mine -floop-block -fgraphite-identity -mindirect-branch=thunk -mindirect-branch-register"

Can you try to minimize CFLAGS/CXXFLAGS while the error is still observable?

You can use
    https://wiki.gentoo.org/wiki/Gcc-ICE-reporting-guide#Expand_-march.3Dnative.2C_exact_gcc_version_and_other_system-specific_options
to expand -march=native.

Comment 3 David Heidelberg (okias) 2019-01-23 11:16:10 UTC

Will be fixed in 1.1.4

Fixed by commit: https://gitlab.com/cmocka/cmocka/commit/ee264da1aa222b354cee36184ab48c2072f62243
Upstream issue: https://gitlab.com/cmocka/cmocka/issues/14

MUST BE BUILD WITH: -DWITH_EXAMPLES=OFF

Comment 4 Andreas Sturmlechner gentoo-dev

2019-01-24 22:32:24 UTC

But that's not really a fix, is it?

Comment 5 Sergei Trofimovich (RETIRED) gentoo-dev

2019-01-24 22:37:12 UTC

Reproduced locally with C*FLAGS="-O2 -pipe -flto":

# LANG=C make V=1 VERBOSE=1
/usr/lib64/ccache/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -flto -fdiagnostics-show-option -frecord-gcc-switches  -Wl,-O1 -Wl,--as-needed -O2 -pipe -flto -Wl,--hash-style=gnu  -Wl,--wrap=uptime CMakeFiles/test_uptime.dir/test_uptime.c.o  -o test_uptime -Wl,-rpath,/dev/shm/portage/dev-util/cmocka-1.1.3/work/cmocka-1.1.3-abi_x86_64.amd64/src ../../../src/libcmocka.so.0.5.1 /usr/lib/librt.so 
/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: /tmp/cc3ig6Xu.ltrans0.ltrans.o: in function `calc_uptime':
<artificial>:(.text+0x46): undefined reference to `__wrap_uptime'
collect2: error: ld returned 1 exit status

I think gcc's lto driver does not understand semantics of -Wl,--wrap= symbol renaming.

Comment 6 Sergei Trofimovich (RETIRED) gentoo-dev

2019-01-24 22:39:45 UTC

Also registered in gcc upstream as https://gcc.gnu.org/PR88643

Comment 7 Larry the Git Cow gentoo-dev

2019-01-24 22:59:52 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=30c33c07c94332463b72487288d5b02372e64190

commit 30c33c07c94332463b72487288d5b02372e64190
Author:     Andreas Sturmlechner <asturm@gentoo.org>
AuthorDate: 2019-01-24 22:32:32 +0000
Commit:     Andreas Sturmlechner <asturm@gentoo.org>
CommitDate: 2019-01-24 22:59:33 +0000

    dev-util/cmocka: Add USE examples, EAPI-7 bump
    
    Bug: https://bugs.gentoo.org/675876
    Package-Manager: Portage-2.3.58, Repoman-2.3.12
    Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

 dev-util/cmocka/cmocka-1.1.3.ebuild               | 13 ++++---
 dev-util/cmocka/files/cmocka-1.1.3-examples.patch | 45 +++++++++++++++++++++++
 2 files changed, 52 insertions(+), 6 deletions(-)

Comment 8 Sam James archtester

2022-05-11 01:59:26 UTC

Apparently a gold bug.

Comment 9 Sam James archtester

2025-02-23 02:19:18 UTC

*** Bug 877755 has been marked as a duplicate of this bug. ***

Comment 10 Sam James archtester

2025-02-23 02:19:33 UTC

*** Bug 877741 has been marked as a duplicate of this bug. ***

Comment 11 Sam James archtester

2025-02-23 02:20:00 UTC

See the discussion in bug 877741 but especially https://bugs.gentoo.org/877741#c9.

Comment 12 Sam James archtester

2025-02-23 02:20:23 UTC

*** Bug 802762 has been marked as a duplicate of this bug. ***

Comment 13 Sam James archtester

2025-02-23 02:20:26 UTC

*** Bug 871999 has been marked as a duplicate of this bug. ***

Comment 14 Sam James archtester

2025-02-23 02:20:32 UTC

*** Bug 943725 has been marked as a duplicate of this bug. ***

Comment 15 Sam James archtester

2025-02-23 02:21:17 UTC

*** Bug 865275 has been marked as a duplicate of this bug. ***

Comment 16 Sam James archtester

2025-02-23 02:21:21 UTC

*** Bug 865997 has been marked as a duplicate of this bug. ***

Comment 17 Sam James archtester

2025-02-23 02:21:27 UTC

*** Bug 865277 has been marked as a duplicate of this bug. ***

Comment 18 Sam James archtester

2025-02-23 02:21:35 UTC

*** Bug 865279 has been marked as a duplicate of this bug. ***

Comment 19 Sam James archtester

2025-02-23 02:21:41 UTC

*** Bug 729772 has been marked as a duplicate of this bug. ***