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• Tunnel out to internet

  - by case1352

  I'm on a network with no internet access, but I have SSH access to a server that sits on my internal network, and the internet. I would like certain programs to be able to access the internet, like windows update and my antivirus software etc. If I install a proxy server on that server I can use the internet from my pc. But I don't want to do that. Is there a way that I can configure a web browser and perhaps putty to let me "tunnel out?" through the server to the internet.

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• Redirect outbound traffic on port 53 to port 5300 with iptables

  - by Zagorax

  I'm running a local dns server on port 5300 to develop a software. I need my machine to use that dns but I wasn't able to tell /etc/resolv.conf to check on a different port. I searched a bit on google and I didn't find a solution. I set 127.0.0.1 as nameserver on /etc/resolv.conf. Could you please tell me how can I redirect outbound traffic on port 53 to another port? I tried the following but it didn't work: iptable -t nat -A PREROUTING -p tcp --dport 53 -j DNAT --to 127.0.0.1:5300 iptable -t nat -A PREROUTING -p udp --dport 53 -j DNAT --to 127.0.0.1:5300

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• How I can compile this C++ code that fails with "'::main' must return 'int'"? [migrated]

  - by krisu

  I have tried to find a solution that make batch file start flashing on taskbar and only good solution was this post on Stack Overflow. But I can't compile the code with WinGW or anything else to EXE, only getting this error: hello.cpp:6:32: error: '::main' must return 'int' Right now, I'm using TDM-GCC to compile code, because it's bit better... Can somebody give me code that actually works or even better compile it to EXE already? P.S. Even more better if somebody could compile this Delphi code, because I can't find any software that's free.

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• If the bug is 5+ years old, then is it a feature?

  - by Job

  Allow me to add details: I work at an institutional place with many coders, testers, QA analysts, product owners, etc. and here is something that bugs me: We have been able to sell crappy (albeit pretty functional) software for over a decade. It has many features and the product is competitive, but there are a some serious bugs out there, as well as thousands of "paper cuts" - little annoyances that clients need to get used to. It pains me to look at some of the things because I firmly believe that if computers do not help to make our lives easier, then we should not use them. I have confidence in my colleagues - they are smart, able, and can improve things when the focus is on doing that. But, it can be difficult to file bugs against some old functionality without seeing them closed or forgotten. "It worked like that for ions" is a typical answer. Also, when QA does regression, they tend to look for anything that is different as much as anything that does not seem right. So, a fix to an old problem can be written up as a bug, because "it has been like that before even my time". The young coder in me thinks: rewrite this freaking thing! As someone who had the opportunity to be close to sales, clients, I want to give a benefit of a doubt to this approach. I am interested in your opinion/experience as well. Please try to consider risk, cost-to-benefit, and other non-technical factors.

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• Interconnection between 2 computers in different networks.

  - by cripox

  Hi, What I want is to connect 2 computers (work and personal) primary for using a software KVM (Input Director or Synergy). Transferring files between them would be a plus. The main issue is that the work computer is in a secured enterprise network, and my personal computer is using a 3G+ modem for Internet access. On the work computer I do not have Internet access (only local network). I want to somehow connect them without to mess up either networks. I want my personal computer to not be seen in the work network. Is it possible? Suggestions: - use a simple UTP cable to connect the 2 computers with each other. Can they each be in both 2 networks without issues? - use some kind of usb cable, if exists

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• How can I limit other (administrator) users access to my profile?

  - by kojo

  Hi, We in our club have a computer with Windows 7 Professional that every club member may use. And everyone has their own separate account. Those accounts have to have administrator priveleges since I want everyone to be able to install any software and use any feature they want. However, there is a single thing that they shouldn't be allowed to do - that is, look into another users' profiles. Now when anyone goes to 'c:\Users(Any User Name)' a little prompt appears that this folder is secured and whether you really want to look inside. Simply clickinh 'ok' give you access to any profile. I tried disabling taking ownership for Administrators group in Group Policies but that had no effect. How can I effectively prohibit administrators looking into each others' profiles and documents?

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• Best tool for writing a Programming Book?

  - by walkthedog

  Well, this is not directly programming related! But a friend of mine wants to write a book about programming. Now he asked me if I knew a good software for this, because Word crashes 10 times a day on his machine, and OpenOffice is just very chunky and slow. Also none of them seem to have any useful support for including Code Listings (examples) with useful syntax highlighting or at least some sort of support for inserting code (i.e. indicating line breaks with arrows that turn around, line numbers, etc). Latex is out of question since it's incredible hard to use and has no really useful feature for including tables. It's a mess. Maybe some IT authors are here who can give some hints what tools they use. That would be great!

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• SAN for Medium Business - Where to start? [closed]

  - by Henson

  I've always run Linux on my home computers, and done PC repair for years, but this is my first experience with needing to buy a SAN. I thought I was knowledgeable, but I feel a bit lost. I need to be able to support 25 VMs, which are currently managed through vSphere. The company I'm at is growing quickly though, so I'd like to plan for the future. Ideally, I want a solution that I can just tack arrays onto and manage as one large, iSCSI drive. Suggestions? Good resources? If I can find something that appears to software as one large drive, am I better off going with a solution like FreeNAS or Starwind, or an all-in-one proprietary solution like NetApp? Cost, is (of course, and always I'm sure) an issue.

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• Firefox Address Bar Search Returns Web Server Running?

  - by Stix

  When I type "trends" in Firefox 25.0 address bar, it returns what looks like a web server running on my PC, although I am not running a web server. I don't have the score to post the screen shot, but specifically it says: It works! This is the default web page for this server. The web server software is running but no content has been added, yet. Why would this display, instead of the normal behavior of the search engine? I'm using Windows 7 with the Anaconda Python distribution installed, but there is no Python interpreter fired up.

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• How do I fix the Dash search not being able to find "additional drivers" nor "update"?

  - by Dronz

  I am a fairly new user of Ubuntu, and currently have two 12.04 installations, one of which seems to work ok but I have two problems. The problem I'm asking about in this question, is that the Dash search seems unable to find things, such as "additional drivers" or "update". On my working machine, searching for "additional drivers" there finds an icon for the driver program, but on the problem machine, it gives "Sorry, there is nothing that matches your search." Dash also only shows sections for Recent Files, and Downloads, on that machine. The account I'm running is an admin account. This installation also has a stuck Ubuntu Software Center (it loads and hangs) as in threads like this one. I don't think I've done very much to this computer that could cause a problem. I installed g++ and Wt to do some programming. The biggest change I can remember is uninstalling the newfangled scrollbars with "sudo apt-get remove liboverlay-scrollbar3-0.2-0", but re-installing that module seems to have no effect on these issues. Anyone have any ideas? Both machines have been updated with all recommended updates and say they are up to date.

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• What are the pros of switching DNS names with a database server hardware upgrade?

  - by wilbbe01

  When we upgrade to new hardware at work we usually increment a number in the DNS name. For example. We have a server called database-2, that is slated to become database-3 in the coming days. I haven't been able to find a good reason why this is good behavior. To me the work of trying to catch all end user machines, as well as all servers dependent on the database server is far riskier than simply moving the database and ip/name with it to the new hardware. A little over a year ago we spent several months of requests coming in, as infrequent users began using software that needed to be updated to point to a new DNS name. I am struggling to find answers as to why this is a good practice. So the question. Why is using DNS names as a "server hardware version identifier" a good idea? What am I overlooking? Thanks much.

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• I am being paid very little(imo), how can I change this? [migrated]

  - by LagWagon

  I am a web developer with about 4 years of relevant work experience in my field. Recently, I went from making $30/hr working from home contracting for large companies to a full time job that only pays 40k/yr. The company I work for now is great, nice people, but a little behind the times. I joined on with very little experience in SQL development but they put me in charge of querying the DB and making reports right away, so I had to go in head first and pick up that skill right away. Which is great, I'm happy I learned more of that, and really make good time when doing SQL now. However, I'm now doing most of their advanced SQL stuff. The day I started, another employee who was running a MVC project based in Yii (which is the sole item that makes this company software) put in his two weeks. Two weeks later, I'm the only one who knows how to use, access, modify, or update this project. Its quite a large responsibility for an "entry level dev", no? I am doing highly advanced jQuery for them to modernize their forms, webpages, amongst other things, a skill that I would bet on few Entry levels being able to do as well as me. I may be wrong, but I feel that what I'm making now is not acceptable. We don't have reviews, ever, so I can't just wait for that.. so I was wondering.. do I sound justified in wanting to be paid more, and how can I make this happen?

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• Automate the process of looking for CVE (new vulnerabilities) related to our infrastructure

  - by skinp

  Is there any service available where you simply list the services, programs and versions you use, and when some CVE comes out about it, you automatically get alerted? Also, is there any other place to look for this kind of information. Do some people release security vulnerabilities to other places than CVE? So in general, how do you guys keep up to date with what might be vulnerable in your infrastructure? Edit: Since I've been asked, we are a Unix shop with mostly Red Hat and some HP-UX. I would still prefer a high level solution which are OS independent. What happens if we use software versions which are not in the official repositories of Red Hat/HP/... or simply not supported by them.

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• Like to Upgrade My PC (7 year old) - for animation and hardcore gaming ! - help me [closed]

  - by sri

  I like to buy a new computer for my studies and as well as gaming. My old pc has 1.5 GB RAM with 512MB Graphics card. And it is very old to run Adobe CS5 version and other high end animation software. My budget will be INR 20k-25k. I have 500GB hard disk, keyboard and mouse new. So apart from this, I like to buy : Intel or AMD is good ? My idea is : Corei5 or Corei7 = which is best and economy ? Which mother board. 4 GB RAM with upto 8 GB RAM slot for future upgrade. 1 GB or 2 GB Graphic card - which one ? If I am wrong - please suggest me

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• 11g R2 on Windows???????!

  - by [email protected]

  Oracle Database?????????11g Release2(R2)?????????????Windows???????! ????Windows 7? Windows Server 2008 R2????????11g R2 for Windows????????OTN???????11gR2??????????????????????????????? ??????????????! OTN??????????????????????????????????????????????????????????????(?)????????????????????????????????????? http://www.oracle.com/technology/global/jp/software/products/database/index.html ? ???????????????????????????????????????????????????????????????? ??????????????????????? ???????! ??????????????????·??·??????????·??????·RAC????????????? GUI(Oracle Enterprise Manager)????????????···?????????????2??xx????? ??? http://download.oracle.com/docs/cd/E16338_01/index.htm????????????????????? ???????! ???PC?????????Oracle Direct Seminar?????????????????????????????11gR2?????????????????????? ???????????3???????? 2010?4?28?(?) 11:00~12:00 Windows 7 / Windows Server 2008 R2 ?????? Oracle ! 2010?5?26?(?) 11:00~12:00 ? ????DB??????????11g R2??? 2010?5?19?(?) 18:00~20:00 [Oracle Evening Seminar]Oracle Database 11g Release2?Windows Server 2008 R2/Windows7?????! 2010?5?22?(?) 13:00~17:00 [Oracle Weekend Seminar] ????????! Oracle Database ??? ????????????????????????????????! ????????????? ????????????????????? http://www.oracle.com/technology/global/jp/documentation/database.html OTN???????11gR2 ??????????????????????????????????????????????????????? ??? ????????????????????????????????????????????????????????????? ???????? ?????? ?????? FAQ ??????????????FAQ?????????? Coming Soon! 11gR2 on Windows ???????????????5???????????????????? ???????!???????????????????????????????????????··! ???????Oracle Database??????????????????OTN???????????????! ???????????????http://www.oracle.com/technology/global/jp/membership/index.html

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• How to copy a folder with many files with integrity check?

  - by RafaelM

  I just got a new hard drive and I want to move many of the folders from the old hard drive to the new one, but I want to make sure everything is copied over correctly. I tried using md5summer to generate md5 sums of the original files, copied files over and then tried to compare md5 sums of both sets of files. This took ages because there are many large video files. Is there any software I can use to make this process as painless as possible? I just need basic file integrity checking. Thanks in advance

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• starting command automaticaly [closed]

  - by aaa

  playing with Debian on raspberry pi. I have a 3g dongle modem on the system and there is a software called sakis3g to connect to internet. I want system to connect to internet automatically every time it starts. It takes about 30-40 seconds to get connected. copied sakis3g to /sbin folder. This command has to be run as root: sakis3g connect parameters blah blah blah I tried to put it in the /etc/rc.local and rebooted system, but no luck. I tried to put it in the crontab as: @reboot sakis3g connect parameters blah blah blah What am I missing here?

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• How to know if a server is physical or virtual? [duplicate]

  - by tachomi

  This question already has an answer here: is there anyway to know if your supposedly fully dedicated server is really a virtually resource-shared machine? [duplicate] 5 answers How can I know if my provider is giving me a dedicated physical server or if I'm getting virtual servers? The provider is from an other country so I don't have the chance to go and see the servers by myself, all of them have linux and they're managed by SSH. All the hire has been done by internet or phone. Are there any commands, dirs to analyze or a way to get this info? They of course tell me that the servers are physical, but when they make some support or hardware/software upgrade or that kind of stuff doesn't take a long. For example, when I ask for a new one with specific requirements at the end they give me more infrastructure than the one I asked for. Of course no one gives extra things without an extra price. Hope I have hinted

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• Is it legal to install WIndows 7 Professional (OEM) on VMWare? [closed]

  - by Domina

  Possible Duplicate: Can you help me with my software licensing issue? I recently heard that Microsoft allow you to install OEM version of windows 7 into Virtual Machine. I'm not 100% sure whether it is true or not and would like to re-confirm with you guys. FYI, I have 2 computers. Let's say "computer A" and "Computer B". I bought a copy of WIndows 7 Professional OEM edition recently and already installed it on my Computer A. I've two questions: Is it legal to install it again on a VMWare/Virtual PC on my Computer A? Is it legal to install it on VMWare/Virtual PC on my Computer B? Thanks.

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• Java?????????????????????? Java Developer Workshop??!

  - by rika.tokumichi

  2011?5?19????????????????????Java Developer Workshop????????????????????Java??????????Java????????????????????????? ?????5???????????????????????????/???????Java?????????????Java SE(Standard Edition)?Java ME(Micro Edition)?Java FX???????????????????????????????????????? ??????·???????? Embedded Java???????????Greg Bollella ??????????????????????????????????·???????? Embedded Java?????????????Greg Bollella????Java SE????????????????????????????Java ME?Embedded Java????????????????????????????????????????????????????????? ????????????????????Java SE 7??????????????????????????? Java ONE?????????????????Java SE 7?Hotspot????????JRockit?2??JVM?????????HotRockit??????Java SE 7?2011?7?28??????????Java SE 8?2012???????????????????????????????????? JDK7?????????????????????JVM??????????????Project Coin????????????ClassLoader???????????????????????????(Project Lambda)?????????(Project Jigsaw)??JDK8??????????????????????? (??????????????http://openjdk.java.net/projects/jdk7/features/????????) ?????????????????????????????????????????Java??????????????????????????????Java SE for Embedded?Oracle Java ME Embedded Client????Java?????????????????????????????????? ???????Java SE?????????????????????????????????????????????????????????????????????????????????????????? ???????????Java Embedded Global Business Unit ???? ???????????????Java Embedded Global Business Unit ????????Java FX 2.0??????????????????????????????Java FX 2.0?????????????????????????????????????????? ???????????????????·??????????????????????????????????????·???????????????????????????? ?????????? Sun Middleware Globalization ??????? ???? ???????????????????????????? Sun Middleware Globalization ??????? ????????NetBeans 7.0 ??????????????????? 2011?4????????????NetBeans 7.0??????JDK7???????HTML5???????PHP????????????????????????NetBeans 7.0?JDK7?????????Java???????????????????????????????????????????????? ????????????????? ?????????????? ???????????????????OSGi????????????????????OSGi?????????????OSGi Alliance???????????????????????????????????????????????????????????? ???????????????????????????????????????????????????? ???Java?????????????????Blu-ray Java????????????????? ???????? ???????????????!Blu-ray Java???????????????????????Blu-ray Java??????API?????????????????????????????????? ????????????????????????Java+Ricoh: Create, Share, and Think as one.?????????Java???????????????????????Embedded Software Architecture?????????????????????Ricoh Developer Program???????????????????????????/?????????????Java?????????????????????????????????RICOH & Java Developer Challenge?????????? ?????????????????????????????????????????~SIAWASE~ ????????????????????????????????????????????????????????????????????????????????????? ??????????????????????Java Developer Workshop??????Java???????????????????????????????????????????????????????????????

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• ??Oracle ???????

  - by Steve He(???)

  ?????? ??????Oracle Configuration Manager (OCM)????, ????????,?????2?????????????????,?????????????????????????,?????????My Oracle Support?Oracle??????????,???????????????????,??????????? Oracle?????????,?????????????????????????????????????,OCM??????Oracle??????????? ?????????,Oracle????????????????????????My Oracle Support????? ??????,Oracle??????????????????,?????????????????????My Oracle Support?????OCM???,????????????????Oracle?????????????,???????????????????????????,??????????????????,????????????????,???????????,????????????????????Oracle???????,??????????,???????????????????????????,?????????????? ???????? ???????????????,????????????????????????My Oracle Support,??“Collector” ??????????????????“Collector”????,??“More”???????“Collector”????,???????????????????????????????????????????????????????????,??FTP????(ZIP)???PC??Oracle??????????????????????,??$ORACLE_HOME??,???????????????,???????????????????????? My Oracle Support ???(?????,??????) Proxy??(??IP??,???,??????) ???? ?My Oracle Support?????zip????? $Oracle_Home  ????My Oracle Support ???zip?? – ?????CCR???????????? ?????? “$ORACLE_HOME/CCR/bin” ,?????? “setupCCR” ???? My Oracle Support ??(?????,??????) ??????????????                                      ???? ?????  ??,???????,????????????Oracle home????????????????????Oracle??????,EBS,?Enterprise Manager?????,???? Installation and Administration Guide ?????My Oracle Support????????? ?My Oracle Support????? Oracle Configuration Manager Installation and Administration Guide [ID 728989.5] Oracle Configuration Manager Prerequisites [ID 728473.5] Oracle Configuration Manager Network Connectivity Test [ID 728970.5] Oracle Configuration Manager Collection Overview [ID 728985.5] Oracle Configuration Manager Security Overview [ID 728982.5] Oracle Software Configuration Manager: Disconnected Mode Collection [ID 453412.1]  

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• ??????????·????????????Oracle Solaris Cluster 4.0?

  - by kazun

  ??????OS?Oracle Solaris 11???????????????·????????????Oracle Solaris Cluster 4.0???2011?12?6????????????Oracle Solaris 11 ???????????????????????????Oracle Solaris Cluster 4.0 ???????????????????????? Oracle Solaris Cluster 4.0 ?3?????? - Oracle Solaris Cluster ???????????????????????????????????????????????? - Oracle Solaris 11 ?????? - Oracle Solaris Cluster 4.0?????????????????????????????????????? Oracle Solaris Cluster 4.0?? Oracle Solaris Cluster? Oracle Solaris ??????????????????????????????????????(HA)??????·????(DR)????????? Oracle Solaris 11 ??????????????? Oracle Solaris 11 Image Packaging System (IPS)???????????????????????????????????????????????????????? Oracle Solaris 11 ?????????(Automated Installer)????Oracle Solaris???Oracle Solaris Cluster????????????????????????? Oracle Solaris 11??????? Oracle Solaris 11 Zone Cluster ?????????????????????????????Solaris 11 native ??????????????????????????????????????????????????? ?????????????????????????????????????????Solaris 10 ???? Solaris 11 native ????????? Oracle VM Server for SPARC 2.1????????? ?:Zone Cluster (?)?Failover Zone(?)???? ?????·?????? Oracle Solaris Cluster Geographic Edition ?????????????????????·????????????? ?????????????????????????????????/?????????????????????? Oracle Data Guard(Oracle ?????? 11.2.0.3 ?????)?Availability Suite Feature of Oracle Solaris(Oracle Solaris 11 SRU1 ?????)?Oracle Solaris Cluster Geographic Edition script-based plug-ins?????????·??????????????????? ?:?????·???? ?????????????? Oracle Solaris Cluster 4.0??Apache?Apache Tomcat?DHCP?DNS?NFS???Oracle Solaris 11?????????Oracle Database 11g(?????????????Oracle Real Application Clusters)?Oracle WebLogic Server???????·???????????????·????????????????????????????????????????????????API??????????????????? Oracle Solaris Cluster 4.0??????????????????????????????????????????????????? ??????????? IPS ?????(???????? 30 ??????) Oracle Software Delivery Cloud (IPS?????????) (???? (??????????) ???? 30 ??????) OTN (IPS?????????)(?????????? ) ?????? ??????????????????? ???? Oracle Solaris Cluster Oracle Solaris Oracle's Sun Server and Storage Systems ???? Oracle Solaris Cluste Oracle Solaris ?Oracle Solaris Cluster Oasis?Blog

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• ?12c????RAC Cluster Hub Node-Leaf Node

  - by Liu Maclean(???)

  ?12c?cluster?????????????,?????????????flex cluster?flux asm?? ??Hub Node?Leaf Node,?????Hub Node?Leaf Node. Hub Node????: A node in and Oracle Flex Cluster that is tightly connected with other servers and has direct access to a shared disk. Leaf Node????: Servers that are loosely coupled with Hub Nodes, which may not have direct access to the shared storage. ?????????? Leaf Node??????shared storage ,????leaf node??share disk?? ??Hub Node?12c?????cluster node???, ?Leaf Node????? Leaf Node???: ? Hub Node?? ?????cluster?? ????????Hub Node ????Hub Node????? Hub Node????????????Leaf Node??? ??????????? ?Hub Node????? ??Leaf Node??Flex Cluster???????: hub-and-spoke???cluster?????????? ????Hub Node????OCR?Votedisk ????HUB node???,???????clusterware?????,??ocr?Votedisk ? ?????????????? ??????????,???????? ????????,12???Flex cluster??12?????, ???????? [ n * (n-1)]/2?66?????? ???1000?????,?????????????40?Hub Node,???Hub Node??24?Leaf Node,?Flex Cluster???1740??????  ????,??Cluster??499500?????? ?Flex Cluster??????????????,??cluster software????? ??Hub Node ?? ????????? , ??????????relocate???Hub Node ?Hub Node???Leaf Node??????,????????relocate???Leaf Node? ??Leaf Node?? ?????????,????????relocate????Leaf Node?

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• .NET SerialPort DataReceived event not firing

  - by Klay

  I have a WPF test app for evaluating event-based serial port communication (vs. polling the serial port). The problem is that the DataReceived event doesn't seem to be firing at all. I have a very basic WPF form with a TextBox for user input, a TextBlock for output, and a button to write the input to the serial port. Here's the code: public partial class Window1 : Window { SerialPort port; public Window1() { InitializeComponent(); port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); port.Open(); } void port_DataReceived(object sender, SerialDataReceivedEventArgs e) { Debug.Print("receiving!"); string data = port.ReadExisting(); Debug.Print(data); outputText.Text = data; } private void Button_Click(object sender, RoutedEventArgs e) { Debug.Print("sending: " + inputText.Text); port.WriteLine(inputText.Text); } } Now, here are the complicating factors: The laptop I'm working on has no serial ports, so I'm using a piece of software called Virtual Serial Port Emulator to setup a COM2. VSPE has worked admirably in the past, and it's not clear why it would only malfunction with .NET's SerialPort class, but I mention it just in case. When I hit the button on my form to send the data, my Hyperterminal window (connected on COM2) shows that the data is getting through. Yes, I disconnect Hyperterminal when I want to test my form's ability to read the port. I've tried opening the port before wiring up the event. No change. I've read through another post here where someone else is having a similar problem. None of that info has helped me in this case. EDIT: Here's the console version (modified from http://mark.michaelis.net/Blog/TheBasicsOfSystemIOPortsSerialPort.aspx): class Program { static SerialPort port; static void Main(string[] args) { port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); port.Open(); string text; do { text = Console.ReadLine(); port.Write(text + "\r\n"); } while (text.ToLower() != "q"); } public static void port_DataReceived(object sender, SerialDataReceivedEventArgs args) { string text = port.ReadExisting(); Console.WriteLine("received: " + text); } } This should eliminate any concern that it's a Threading issue (I think). This doesn't work either. Again, Hyperterminal reports the data sent through the port, but the console app doesn't seem to fire the DataReceived event. EDIT #2: I realized that I had two separate apps that should both send and receive from the serial port, so I decided to try running them simultaneously... If I type into the console app, the WPF app DataReceived event fires, with the expected threading error (which I know how to deal with). If I type into the WPF app, the console app DataReceived event fires, and it echoes the data. I'm guessing the issue is somewhere in my use of the VSPE software, which is set up to treat one serial port as both input and output. And through some weirdness of the SerialPort class, one instance of a serial port can't be both the sender and receiver. Anyway, I think it's solved.

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• issue with std::advance on std::sets

  - by tim

  I've stumbled upon what I believe is a bug in the stl algorithm advance. When I'm advancing the iterator off of the end of the container, I get inconsistent results. Sometimes I get container.end(), sometimes I get the last element. I've illustrated this with the following code: #include <algorithm> #include <cstdio> #include <set> using namespace std; typedef set<int> tMap; int main(int argc, char** argv) { tMap::iterator i; tMap the_map; for (int i=0; i<10; i++) the_map.insert(i); #if EXPERIMENT==1 i = the_map.begin(); #elif EXPERIMENT==2 i = the_map.find(4); #elif EXPERIMENT==3 i = the_map.find(5); #elif EXPERIMENT==4 i = the_map.find(6); #elif EXPERIMENT==5 i = the_map.find(9); #elif EXPERIMENT==6 i = the_map.find(2000); #else i = the_map.end(); #endif advance(i, 100); if (i == the_map.end()) printf("the end\n"); else printf("wuh? %d\n", *i); return 0; } Which I get the following unexpected (according to me) behavior in experiment 3 and 5 where I get the last element instead of the_map.end(). [tim@saturn advance]$ uname -srvmpio Linux 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686 athlon i386 GNU/Linux [tim@saturn advance]$ g++ --version g++ (GCC) 4.1.1 20061011 (Red Hat 4.1.1-30) Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [tim@saturn advance]$ g++ -DEXPERIMENT=1 advance.cc [tim@saturn advance]$ ./a.out the end [tim@saturn advance]$ g++ -DEXPERIMENT=2 advance.cc [tim@saturn advance]$ ./a.out the end [tim@saturn advance]$ g++ -DEXPERIMENT=3 advance.cc [tim@saturn advance]$ ./a.out wuh? 9 [tim@saturn advance]$ g++ -DEXPERIMENT=4 advance.cc [tim@saturn advance]$ ./a.out the end [tim@saturn advance]$ g++ -DEXPERIMENT=5 advance.cc [tim@saturn advance]$ ./a.out wuh? 9 [tim@saturn advance]$ g++ -DEXPERIMENT=6 advance.cc [tim@saturn advance]$ ./a.out the end [tim@saturn advance]$ g++ -DEXPERIMENT=7 advance.cc [tim@saturn advance]$ ./a.out the end [tim@saturn advance]$ From the sgi website (see link at top), it has the following example: list<int> L; L.push_back(0); L.push_back(1); list<int>::iterator i = L.begin(); advance(i, 2); assert(i == L.end()); I would think that the assertion should apply to other container types, no? What am I missing? Thanks!

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