Bug 890273

Summary:	sys-devel/m4 warning: FORTIFY_SOURCE redefined with gcc12 hardened _F_S=3
Product:	Gentoo Linux	Reporter:	genBTC
Component:	Current packages	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	847148
Attachments:	m4 build.log

Description genBTC 2023-01-09 08:06:32 UTC

When using gentoo-hardened with the new  fortify-source-3.patch  built into Gcc-12.2.1_p20221231 ,
M4 package results in a warning about a definition redefined collision.

<command-line>: warning: "_FORTIFY_SOURCE" redefined
<built-in>: note: this is the location of the previous definition

Meaning the package has _F_S=2 hardcoded internally somewhere and that flag should be stripped so _F_S=3 can take effect without conflict.

Reproducible: Always

Comment 1 genBTC 2023-01-09 08:09:39 UTC

Created attachment 848004 [details]
m4 build.log

warning: "_FORTIFY_SOURCE" redefined

Comment 2 Larry the Git Cow gentoo-dev

2023-01-09 09:45:09 UTC

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=34ace9fe79667dfcfd0ab651cc246c85a7706ae6

commit 34ace9fe79667dfcfd0ab651cc246c85a7706ae6
Author:     Sam James <sam@gentoo.org>
AuthorDate: 2023-01-09 08:17:11 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2023-01-09 09:45:01 +0000

    sys-devel/m4: stop downgrading FORTIFY_SOURCE
    
    Closes: https://bugs.gentoo.org/890273
    Signed-off-by: Sam James <sam@gentoo.org>

 sys-devel/m4/files/m4-1.4.19-fortify-source.patch |  49 +++++++++++
 sys-devel/m4/m4-1.4.19-r1.ebuild                  | 101 ++++++++++++++++++++++
 2 files changed, 150 insertions(+)