Bug 2279170

Summary:	clang-18: -ffat-lto-objects gives multiple definition of `.str.llvm.0'
Product:	[Fedora] Fedora	Reporter:	Hin-Tak Leung <htl10>
Component:	clang	Assignee:	Tom Stellard <tstellar>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	40	CC:	airlied, jchecahi, kkleine, npopov, sergesanspaille, siddharth.kde, tbaeder, tstellar, tuliom
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Hardware:	x86_64
OS:	Linux
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Last Closed:	2025-04-25 10:48:09 UTC	Type:	---
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Description Hin-Tak Leung 2024-05-05 17:46:35 UTC

Doing:

clang++ -flto -ffat-lto-objects -shared  -fPIC -DPIC ...

gives

/usr/bin/ld: /tmp/lto-llvm-8916fe.o:(.rodata.str1.1+0x2e0): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-6b4bd2.o:(.rodata.str1.1+0x1c): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-5d650b.o:(.rodata.str1.1+0x192): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-f629d0.o:(.rodata.str1.1+0x38): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-3268c9.o:(.rodata.str1.1+0x0): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-f0e820.o:(.rodata.str1.1+0x0): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-b5dd56.o:(.rodata.str1.1+0x0): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-c819be.o:(.rodata.str1.1+0x15): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-dd4627.o:(.rodata.str1.1+0x2c): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-0eb806.o:(.rodata.str1.1+0x63): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-ccbdf8.o:(.rodata.str1.1+0x0): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-2885f6.o:(.rodata.str1.1+0x12): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-db3b4f.o:(.rodata.str1.1+0x2d7): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
/usr/bin/ld: /tmp/lto-llvm-9fa0cf.o:(.rodata.str1.1+0x11): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
clang++: error: linker command failed with exit code 1 (use -v to see invocation)


with:
clang-18.1.1-1.fc40.x86_64


Reproducible: Always

Steps to Reproduce:
1. uses "clang++ -flto -ffat-lto-objects -shared  -fPIC -DPIC ..." to build shared libraries

Actual Results:  
/usr/bin/ld: /tmp/lto-llvm-9fa0cf.o:(.rodata.str1.1+0x11): multiple definition of `.str.llvm.0'; /tmp/lto-llvm-6f7958.o:(.rodata.str1.1+0x31d): first defined here
clang++: error: linker command failed with exit code 1 (use -v to see invocation)


Expected Results:  
success (it was successful with fc39's clang before I ugraded to fc40)

Upstream issue:
https://github.com/llvm/llvm-project/issues/84167

Apparently somebody from redhat filed it, and it got fixed, and there is a koji build for fc41. Please backport to fc40.

Comment 1 Nikita Popov 2024-05-06 01:00:31 UTC

I've put up https://src.fedoraproject.org/rpms/clang/pull-request/238 to backport just this patch. Though if @tstellar is planning to do a point release update for f40 soon, that would fix it as well.

Comment 2 Aoife Moloney 2025-04-25 10:37:09 UTC

This message is a reminder that Fedora Linux 40 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 40 on 2025-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
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Comment 3 Nikita Popov 2025-04-25 10:48:09 UTC

This has been fixed a long time ago, closing.