Bug 218377

Summary: g++ compile runs forever on test file with optimization and debug info
Product: Red Hat Enterprise Linux 4 Reporter: Robert Hancock <robert.hancock>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.4CC: aoliva
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2007-0220 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-05-01 17:09:43 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
Test case to reproduce compiler hang none

Description Robert Hancock 2006-12-04 22:03:24 UTC 
Description of problem:

On compiling several files from the TAO open-source CORBA software (such as
TAO/tao/ObjectKey_Table.cpp), the compiler runs forever when compiling with both
optimization and debug info enabled. With either optimization or debug info
disabled the compile completes normally.

Version-Release number of selected component (if applicable):

gcc-3.4.6-3

How reproducible:

Every time

Steps to Reproduce:

1. Compile attached preprocessed test case with:

g++ -O3 -g -c -o ObjectKey_Table.o ObjectKey_Table.cpp

2. Also try with just -O3 and just -g
  
Actual results:

Compiler runs forever and never finishes

Expected results:

Compile eventually completes

Additional info:
Comment 1 Robert Hancock 2006-12-04 22:03:24 UTC 
Created attachment 142780 [details]
Test case to reproduce compiler hang
Comment 2 Jakub Jelinek 2006-12-05 15:31:03 UTC 
This is endless loop in vt_find_locations, very likely duplicate of #216695.
As a workaround, compile with -O3 -g -fno-var-tracking.
Comment 3 Alexandre Oliva 2006-12-08 04:20:23 UTC 
Patch that fixes the bug attached to bug 216695.
Comment 9 Red Hat Bugzilla 2007-05-01 17:09:43 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/RHSA-2007-0220.html