Bug 332871

Summary:	dev-util/valgrind-3.5.0: doesnt work sys-libs/glibc-2.12
Product:	Gentoo Linux	Reporter:	Michal 'vorner' Vaner <vorner>
Component:	[OLD] Development	Assignee:	Maurice van der Pot (RETIRED) <griffon26>
Status:	RESOLVED FIXED
Severity:	major	CC:	tdalman, zeev.tarantov
Priority:	High
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	331665
Attachments:	Emerge --info

Description Michal 'vorner' Vaner 2010-08-15 18:23:28 UTC

Hello

After an upgrade of glibc to 2.12.1, valgrind starts reporting many false positives, like the ones noted here: http://www.cygwin.com/ml/libc-alpha/2010-05/msg00024.html or here: http://bugs.archlinux.org/task/19634.

Downgrade of glibc is not supported, attempt to reemerge valgrind fails with (end of configure):
checking for egrep... /bin/grep -E
checking the GLIBC_VERSION version... unsupported version
configure: error: Valgrind requires glibc version 2.2 - 2.11

This is kind of unlucky, as it leaves no way to restore valgrind into usable state without complete system reinstall or other risky operations like forced downgrade of glibc (no, I'm not going to try that). May I suggest some kind of block that would stop glibc from upgrading if valgrind is installed?

Thanks

Reproducible: Always

Steps to Reproduce:

Comment 1 Markos Chandras (RETIRED) gentoo-dev

2010-08-15 20:14:23 UTC

emerge --info please

Comment 2 SpanKY gentoo-dev

2010-08-15 20:31:11 UTC

not a bug in glibc

Comment 3 Michal 'vorner' Vaner 2010-08-15 20:57:34 UTC

Created attachment 243107 [details]
Emerge --info

Comment 4 Michal 'vorner' Vaner 2010-08-15 21:02:05 UTC

I do not think it is bug neither in glibc nor in valgrind. Just that glibc does some magic inside and valgrind needs to know about it and it does not yet know this version. With short look trough the internet, they are working on newer valgrind that will know glibc-2.12, but until then, they do not work together, so I think there should be a block in the ebuilds.

Comment 5 Zeev Tarantov 2010-08-15 23:47:48 UTC

valgrind-9999 works fine with glibc-2.12.1 on ~amd64.

Comment 6 Darren Smith 2010-08-17 03:52:44 UTC

http://cvs.fedoraproject.org/viewvc/rpms/valgrind/F-13/valgrind-3.5.0-glibc-2.12.patch

Comment 7 Samuli Suominen (RETIRED) gentoo-dev

2010-08-19 17:58:15 UTC

+  19 Aug 2010; Samuli Suominen <ssuominen@gentoo.org> valgrind-3.5.0.ebuild,
+  +files/valgrind-3.5.0-glibc-2.12.patch,
+  +files/valgrind-3.5.0-stat_h.patch:
+  Fix building with recent glibc wrt #332871 by Michal Vaner.