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Error From Debugger Cannot Access Memory At Address 0x0


Important information This site uses cookies to store information on your computer. For example, to set a break point in funciton pinPage of the BufMgr class, I'd do the following: (gdb) break 'BufMgr::pinPage(int, Page *&, int)' This looks pretty icky, but really I Writing off the end of the array Generally, if you're writing off the bounds of an array, then the line that caused the segfault in the first place should be an Type "show warranty" for details. Source

Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide. This is a bug that won't catch you until you're running your code on a real system unless you explicitly test your code in low memory situations. Type "show copying" and "show warranty" for details. NOTE: the format is sticky (need to explictly change it) x/s 0x40062d # examine the memory location 0x40062d as a string 0x40062d "Hello There" x/4c 0x40062d # examine the first 4

Gdb Cannot Access Memory At Address Breakpoint

Should I install additional plugins? There is absolutely no warranty for GDB. A common mistake is to not check the return from malloc to make sure that the system isn't out of memory. As a minor point, generally the libraries are put in the order they will be resolved against, so try: gcc -o memtest memtest.c -ggdb3 -lefence Reply With Quote 30-May-2009,03:07 #7 roberto60

Your program is only allowed to touch memory that belongs to it -- the memory previously mentioned. I'll try starting a new project and copy pasting it in but this is really weird. A problem internal to GDB has been detected, further debugging may prove unreliable. Segmentation Fault (core Dumped) I means to me that a default installation of eclipse helios in ubuntu linux 9.1 (widely used distribution), does not allow to debug in normal conditions (the program I am working

One way you can get a sense of this in GDB is by printing out the addresses stored in other pointers you've allocated. Cannot Access Memory At Address Gdb Core I did not try it with electric fence. Some information about loading symbols #0 0x0804838c in foo() () at t.cpp:4 4 *x = 3; So, execution stopped inside the function called foo() on line 4, which happened to be Did a thief think he could conceal his identity from security cameras by putting lemon juice on his face?

Maybe ask an electric fence forum? Program Received Signal Sigsegv, Segmentation Fault. The cost of switching to electric cars? GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Second, you may have some memory, allocated during runtime (using either malloc, in C, or new, in C++), stored on the heap (you may also hear it called the "free store").

Cannot Access Memory At Address Gdb Core

Preferably, copy-paste the error message. Reply With Quote 26th January 2008,11:22 #10 wysota View Profile View Forum Posts View Blog Entries Visit Homepage View Articles The "Q" Join Date Jan 2006 Location Warsaw, Poland Posts 33,213 Gdb Cannot Access Memory At Address Breakpoint Open the console, cd into src, run qmake, make distclean, qmake, make. Cannot Access Memory At Address 0x0 Eclipse By Masih in forum General Programming Replies: 6 Last Post: 2nd July 2007, 23:25 Qt 4.1.1 linker warnings By Matt Smith in forum Installation and Deployment Replies: 0 Last Post: 26th

Hardware watchpoint 1: [variable name] Old value = [value1] New value = [value2] This approach can get tricky when you're dealing with a lot of dynamically allocated memory and it's not this contact form GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Your code should be prepared to handle this situation cleanly, and if you choose to catch the exception and return NULL inside a function that ordinarily returns a new'ed pointer, this If you just hit RETURN at the gdb prompt, gdb will execute the most recent previous command again. Gdb Segmentation Fault

Report message to a moderator Re: Cannot access memory at address 0x0 [message #659077 is a reply to message #659011] Thu, 10 March 2011 21:46 Axel MuellerMessages: 1973Registered: Saluti R Reply With Quote 30-May-2009,03:25 #8 ken_yap View Profile View Forum Posts View Blog Entries View Articles Flux Capacitor Penguin Join Date Jun 2008 Location UTC+10 Posts 9,936 Re: argc=Cannot more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed http://tcsmacs.net/cannot-access/keil-debugger-cannot-access-memory.php What is the difference between "veki" and "vekiĝi"?

First, you have local variables in each of your functions; these are stored in the stack. Gdb Mac Or did you hit a breakpoint? It is true that the program run fine but my question is if there is memory corruption as it seems from the following code: Code: GNU gdb 6.8 Copyright (C) 2008

UPDATE: this worked for me by issuing the following command in gdb: set architecture i386:x86-64 linux debugging gdb virtual-machine share|improve this question edited Apr 20 '09 at 16:35 asked Mar 30

For example: % gcc -g myprog.c To start gdb, invoke gdb on the executable file. Type "show warranty" for details. Use the -dograb option to enforce grabbing.7 return 0;(gdb) n8 }(gdb) n0xb743b050 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6(gdb) nSingle stepping until exit from function __libc_start_main, which has no line number information.Program exited How To Use Gdb don't use -O2), or gdb will have a hard time mapping optimized machine code to your source code.

There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. At delivery time, client criticises the lack of some features that weren't written on my quote. This is free software; see the source for copying conditions. Check This Out I tried gdb -nx but I could not notice any difference? –boffman Mar 30 '09 at 20:19 add a comment| up vote 0 down vote 1) You need a proper gdbserver

ianlancetaylor commented Aug 21, 2014 Comment 1: Labels changed: added repo-main, release-none. Why do cars die after removing jumper cables? Of course, there's no guarantee that this rule of thumb will hold on all systems. Typically, you need to analyze your recursive function to make sure that all the base cases (the cases in which the function should not call itself) are covered correctly.

share|improve this answer edited Apr 1 '11 at 23:30 answered Apr 1 '11 at 23:25 Josh Haberman 2,7181229 add a comment| up vote 0 down vote Check that neither orig, nor I have no idea of where to find it in my KDevelop though.