Bug 443816 – sys-devel/gcc-4.7.2 - Erroneous gfortran warning of unused module variable when variable is only used in namelist

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Marc van der Sluys 2012-11-18 18:11:10 UTC]

Created attachment 329870 [details, diff]
gfortran-unused-mod-namelist.patch

I reported a bug to the upstream gcc Bugzilla (gfortran-4.7.2 -Wall gives a warning about unused module variables when those variables are only used in a namelist, http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55352) and adapted their patch for use with the Gentoo ebuild sys-devel/gcc-4.7.2.ebuild.  This patch is attached and could be used (for gcc-4.7.2-r1?) until the issue is fixed upstream.

[Comment 1 SpanKY 2012-11-19 18:11:48 UTC]

we'll merge it once it gets committed to mainline

[Comment 2 Marc van der Sluys 2012-11-23 19:57:58 UTC]

Bug will be fixed upstream in gcc-4.7.3 and 4.8.0:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55352#c10

[Comment 3 SpanKY 2012-12-25 06:58:16 UTC]

do you want this in 4.7.2 ?  or are you happy with just waiting for 4.7.3 ?

[Comment 4 Marc van der Sluys 2012-12-25 11:14:50 UTC]

(In reply to comment #3)
> do you want this in 4.7.2 ?  or are you happy with just waiting for 4.7.3 ?

I'm fine with waiting - I added the patch to my local overlay and everything works: 
http://astrofloyd.wordpress.com/2012/12/25/erroneous-gfortran-warning-of-unused-module-variable-when-variable-is-only-used-in-namelist/

[Comment 5 Marc van der Sluys 2012-12-25 11:18:36 UTC]

(In reply to comment #4)
> (In reply to comment #3)
> > do you want this in 4.7.2 ?  or are you happy with just waiting for 4.7.3 ?
> 
> I'm fine with waiting - I added the patch to my local overlay and everything
> works: 

Sorry, link should be the original one:
http://astrofloyd.wordpress.com/2012/11/18/erroneous-gfortran-warning-of-unused-module-variable-when-variable-is-only-used-in-namelist/