Bug 238399

Summary: "internal compiler error: Segmentation fault" when using -fopenmp
Product: Red Hat Enterprise Linux 4 Reporter: Sebastian Steiger <steigers>
Component: gcc4Assignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0   
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: RHEA-2007-0805 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-11-15 16:11:16 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
The preprocessed code which gives the error none

Description Sebastian Steiger 2007-04-30 08:35:12 UTC 
Description of problem:
-----------------------

When compiling a certain parallelized code using -fopenmp, an internal compiler
error occurs. Unfortunately I cannot track the problem down more because as soon
as I take away some include files or further simplify my code, the error disappears.


Version-Release number of selected component (if applicable):
-------------------------------------------------------------
gcc version 4.1.0 20060515 (Red Hat 4.1.0-18) 
(using libgomp)


How reproducible:
-----------------
Always (on my x86_64 machine)


Steps to Reproduce:
-------------------
1. Take the supplied preprocessed file test.cpp
2. Try to compile: g++4 -c -Wall -fPIC -g -DDEBUG -DAMD -m64 -fopenmp -o test.o
test.cpp 

  
Actual results:
---------------
- Compiling gives an internal compiler error
- When omitting -fopenmp, compiling works

Expected results:
-----------------
Compiling using OpenMP (libgomp) should also work!
Comment 1 Sebastian Steiger 2007-04-30 08:35:13 UTC 
Created attachment 153775 [details]
The preprocessed code which gives the error
Comment 2 Jakub Jelinek 2007-04-30 09:02:40 UTC 
Incidentally I have fixed this last week, see
http://gcc.gnu.org/PR30558
http://gcc.gnu.org/ml/gcc-patches/2007-04/msg01601.html
The fix is so far in gcc-4.1.2-11 in Fedora development (i.e. will be in Fedora
7), but will eventually make it to other distros which track
redhat/gcc-4_1-branch (RHEL5.1, RHEL4.6, FC6, FC5).
Comment 9 errata-xmlrpc 2007-11-15 16:11:16 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHEA-2007-0805.html