gdb

Can I use DDD3.3.12 with GDB7.1?

Can I use ddd3.3.12 with gdb7.1? ...

How do I see when an object is influenced, and by what?

Hey SO, This might be a long shot, but I'm having a bug that I'm fairly sure is specific to my program. I'm animating something, and between then the animation starts and stops, something is influencing my animated view, and changing it's size. I was wondering if there was a way in the debugger, or really in anything to see what's inf...

gdb: Cannot find new threads: generic error

When I run GDB against a program which loads a .so which is linked to pthreads, GDB reports error "Cannot find new threads: generic error". Note that executable that I run is not linked with pthreads. Any clues? $ gdb --args lua -lluarocks.require GNU gdb (GDB) 7.0-ubuntu Copyright (C) 2009 Free Software Foundation, Inc. License GPLv...

Debugging MinGW program with gdb on Windows, not terminating at assert failure

How do I set up gdb on window so that it does not allow a program with assertion failure to terminate? I intend to check the stack trace and variables in the program. For example, running this test.cpp program compiled with MinGW 'g++ -g test.cpp -o test' in gdb: #include <cassert> int main(int argc, char ** argv) { assert(1==2); retu...

How to use the debugger with nested static libraries in XCode?

Hi all, A project that I've inherited has the following structure: Project A produces a static library. Project B produces a static library and links with library A. Project C produces the executable and links with library B. When I run app in debug mode, I can successfully debug code within the executable (project C) and the static...

Errors/Warnings/Debug Info no longer appears in Debug Console

Hi Guys: This one is driving me crazy. When I run my App and open the Debug Console there is nothing there! Nope, not even the output from my NSLog statements. Before I would see a bunch of debug information starting with [Session Started ...] and ending with 'Terminating in response to SpringBoard's termination'. The Status Bar at the b...

Cannot insert a breakpoint in shared Library

Friends While debugging an application of of the function is defined in a shared library which is written by another vendor . and I get an error like warning: Cannot insert breakpoint 0: in /opt/trims/uat/lib/libTIPS_Oleca.sl warning: This is because your shared libraries are not mapped private. To attach to a process and debug its ...

How can i attach to a process using gdbvim?

Hi, I use Vim as primary IDE for programming, with some plugins i have a good environment but for a single point: debugging. I have recompiled Vim to use vimgdb, and it works, but the problem is that i need to attach to a process started by a root user so i have to use sudo to do it.... How can i do this with vimgdb? Thanks in advanc...

Jumping into argv?

Hi, I`am experimenting with shellcode and stumbled upon the nop-slide technique. I wrote a little tool that takes buffer-size as a parameter and constructs a buffer like this: [ NOP | SC | RET ], with NOP taking half of the buffer, followed by the shellcode and the rest filled with the (guessed) return address. Its very similar to the t...

GDB question - how do I go through disassembled code line by line?

I'd like to go through a binary file my teacher gave me line by line to check addresses on the stack and the contents of different registers, but I'm not extremely familiar with using gdb. Although I have the C code, we're supposed to work entirely from a binary file. Here are the commands I've used so far: (gdb) file SomeCode Which g...

c - difficulties with bit operations

I'm debugging a program with GDB. unsigned int example = ~0; gives me: (gdb) x/4bt example 0xffd99788: 10101000 10010111 11011001 11111111 why is this not all 1's? i defined it as ~0... then the next line of code is: example>>=(31); and GDB gives me this when I try to examine the memory at bits: (gdb) x...

Get functions called with GDB

Hi, I am using GDB to understand a C++ program. I put a break in the middle of the running which turns to be something like: break main.cpp:500 and I would like to see which functions have been called before. I tried "backtrace" but it shows only info about main, as previous calls to previous functions have already finished. My quest...

C program debugging in gdb problem

I'm trying to run my app on gdb. Therefore I compiled it with the 'g' option. But when I'm running gdb ./app I get: DW_FORM_strp pointing outside of .debug_str section [in module /home/w/app] And I cannot do any break: (gdb) break main No symbol table is loaded. Use the "file" command. (gdb) . ...

C program runs in Cygwin but not Linux (Malloc)

I have a heap allocation error that I cant spot in my code that is picked up on vanguard/gdb on Linux but runs perfectly on a Windows cygwin environment. I understand that Linux could be tighter with its heap allocation than Windows but I would really like to have a response that discovers the issue/possible fix. I'm also aware that I ...

Examining the stack frame in gdb

right now I've been using gdb to disassemble a binary file and check out different registers and whatnot. Is there an easy command to examine everything on the stack? can this be limited to everything in a function? ...

GDB disas question about address values

I'm working with a binary file that I disas'd in gdb. Right now I'm just examining the return value of a function. 0x08048604 <playGame+78>: ret Is the address shown the address where ret is stored in the function? Or is it just the address of the instruction to return the ret value? ...

Any techniques to interrupt, kill, or otherwise unwind (releasing synchronization locks) a single deadlocked Java thread allowing other threads to continue?

I have a long-running process where, due to a bug, a trivial/expendable thread is deadlocked with a thread which I would like to continue, so that it can perform some final reporting that would be hard to reproduce in another way. Of course, fixing the bug for future runs is the proper ultimate resolution. Of course, any such forced in...

C++: why a self pointer of a struct automatically changes to void*

struct ptr{ int node; ptr *next; ptr(){} ptr(int _node, ptr *_next){ node=_node; next=_next; } }; struct list_t{ ptr *sht; int size; void push(int node){ size++; sht=new ptr(node,sht); } }shthead[100001], comp[200001], tree[200001]; The struct ptr is a smart pointer, be used as a linked l...

How to use gdb to find a floating point exception in g++ code

I have a g++ program that runs without user input. Somewhere the program is interrupted and it says "Floating point exception." Can gdb help me find what's causing this in my code? How? ...

Not able to install GDB on Fedora..

How to download and install GDB(GNU Debugger) on Fedora Linux Machine.. I have tried downloading from gnu website 7.1 package, but then it fails during ./configure and then make command... Please share the source from where i can get information on the same. Thanks.. ...