Bug 2159783

Summary:	WebKitGTK fails to build with LTO enabled
Product:	[Fedora] Fedora	Reporter:	Michael Catanzaro <mcatanza>
Component:	gcc	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	37	CC:	aoliva, dmalcolm, fweimer, jakub, jlaw, jwakely, mcermak, mpolacek, msebor, nickc, sipoyare
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Hardware:	x86_64
OS:	Linux
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Last Closed:	2023-12-07 14:53:07 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Michael Catanzaro 2023-01-10 17:55:21 UTC

Description of problem: Since https://commits.webkit.org/257515@main, WebKitGTK fails to build with LTO enabled. The error message is: "lto1: fatal error: missing resolution data for _ZTVN7WebCore17SpeechRecognitionE" and the upstream bug report is https://bugs.webkit.org/show_bug.cgi?id=249368. Note that the commit that broke the build has nothing whatsoever to do with the speech recognition code that is missing resolution data.

Normally when reporting a GCC bug, I would try to provide complete preprocessed source that you can use as a reproducer. But for an LTO bug like this, that's not going to be sufficient to reproduce the problem. In fact, this error does not occur when compiling any particular source file, but when linking. I have no clue what would be useful to provide here.

Version-Release number of selected component (if applicable): gcc-12.2.1-4.fc37


How reproducible: Always


Steps to Reproduce:
1. Remove the _lto_cflags override from the top of https://src.fedoraproject.org/rpms/webkitgtk/blob/rawhide/f/webkitgtk.spec
2. Try to build it with 'fedpkg mockbuild'

You can also reproduce by cloning the upstream git repo and building with 'cmake -DPORT=GTK -DCMAKE_C_FLAGS="-flto=auto" -DCMAKE_CXX_FLAGS=-flto=auto", but I figure it's easier to 



Actual results: lto1: fatal error: missing resolution data for _ZTVN7WebCore17SpeechRecognitionE


Expected results: Build should succeed


Additional info: I like pasta.

Comment 1 Aoife Moloney 2023-11-23 00:56:48 UTC

This message is a reminder that Fedora Linux 37 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 37 on 2023-12-05.
It is Fedora's policy to close all bug reports from releases that are no longer
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Comment 2 Aoife Moloney 2023-12-07 14:53:07 UTC

Fedora Linux 37 entered end-of-life (EOL) status on 2023-12-05.

Fedora Linux 37 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

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