Bug 1164575

Summary: -flto inlining bug
Product: Red Hat Enterprise Linux 7 Reporter: Alex/AT <alex>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact: Miroslav Franc <mfranc>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.0CC: alex, law, mcermak, mfranc, mnewsome, mpolacek, ohudlick
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: gcc-4.8.5-3.el7 Doc Type: Bug Fix
Doc Text:
No description necessary
 Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-19 12:22:05 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1110700, 1191021    
Attachments:
Description Flags
PHP 5.5 spec with -flto option that is failing none

Description Alex/AT 2014-11-16 16:40:28 UTC 
To reproduce, i.e. try to compile php 5.5 with -flto. Gives:

/usr/include/bits/unistd.h:34:1: error: inlining failed in call to always_inline 'read': recursive inlining
 read (int __fd, void *__buf, size_t __nbytes)

A known bug. More details here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59626

Please include the fix into the GCC update.
Comment 5 Jakub Jelinek 2015-06-11 08:15:34 UTC 
Richard Biener attached a backport to the upstream PR.  I'd like to make sure it fixes this bug, but To reproduce, i.e. try to compile php 5.5 with -flto. Gives:
is too vague.  Do you e.g. have a src.rpm that fails to build with RHEL 7.1 gcc that I could try with the unpatched and patched compiler?  Or just detailed instructions on what exactly you do to trigger it?
Comment 6 Alex/AT 2015-06-11 20:07:08 UTC 
Created attachment 1037810 [details]
PHP 5.5 spec with -flto option that is failing
Comment 7 Alex/AT 2015-06-11 20:08:13 UTC 
I have attached .spec that is failing. It requires nothing except php 5.5.20 source and its compile dependencies (not exactly written in .spec). If you don't have some deps, just disable them in configure options, it will fail nevertheless.
Comment 8 Alex/AT 2015-06-11 20:09:09 UTC 
Or just do CFLAGS="-flto" CXXFLAGS="-flto" ./configure ; make on php 5.5
Comment 9 Alex/AT 2015-06-11 20:10:59 UTC 
By the way, can I have the patch so I can rebuild gcc and test some more RPMs?
Comment 17 errata-xmlrpc 2015-11-19 12:22:05 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2080.html