Bug 62550

Summary:	libstdc++.so.3.0.4 is not thread safe on SMP machine
Product:	[Retired] Red Hat Linux	Reporter:	Need Real Name <matej.kenda>
Component:	libstdc++	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	medium
Version:	7.2
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2002-12-15 19:50:19 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:

Description Need Real Name 2002-04-02 15:01:22 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.9) Gecko/20020311

Description of problem:
Programs compiled with streams in libstdc++ library (version 3.0.4) are not
thread safe and they crash radomly on a SMP machine. They work on UP machine
however.

It seems that the bug was solved already by gcc developers.

Additional references:

View Problem Report: 5432
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?database=gcc&pr=5432&cmd=view

Announcing libstdc++-v3.0.97
http://gcc.gnu.org/ml/libstdc++/2002-03/msg00050.html



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


How reproducible:
Always

Steps to Reproduce:
1. Create a c++ program which creates ostringstream in a loop.
2. Start multiple threads that execute that part of the code
3. Compile with g++ 3.0.4
4. Run it on SMP machine
	

Actual Results:  
A crash dump happens really quicky.


Additional info:

Comment 1 Alan Cox 2002-12-15 19:50:19 UTC

We now ship 3.2 on 8.0