how to set breakpoint on function in a shared library which has not been loaded in gdb

Posted by pierr on Stack Overflow See other posts from Stack Overflow or by pierr
Published on 2010-04-15T05:39:31Z Indexed on 2010/04/15 5:43 UTC
Read the original article Hit count: 347

Filed under:

gdb

|

breakpoints

|

debug

|

shared-libraries

Hi, I have a shared library libtest.so which will be loaded into the the main program using dlopen. Function test() reside in libtest.so and will be called in the main program through dlsym. Is there any way I could set up a break point on test?

Please note that the main programm has not been linked to libtest.so during linking time. Otherwise , I should be able to set the break point although it is a pending action. In my case, when I do b test, gdb will tell me Function "test" not defined.

© Stack Overflow or respective owner

Related posts about gdb

GDB breakpoint problems attaching to QEMU

as seen on Super User - Search for 'Super User'
Hi, I have the following problem. When I connect gdb to qemu for debugging it won't break on breakpoints. I can set breakpoints, break with ctrl-c etc. Any clues how this can be fixed? I have: $ qemu --version QEMU PC emulator version 0.11.0 (qemu-kvm-0.11.0), Copyright (c) 2003-2008 Fabrice Bellard $… >>> More
gdb+osx: no output when using printf/CFShow

as seen on Stack Overflow - Search for 'Stack Overflow'
I attached to a program with gdb in OSX and I want to use CFShow in the gdb console etc. However, nothing shows up. printf shows nothing as well: (gdb) call (int) printf("Hello\n") $10 = 6 (gdb) call (int) printf("Hello World!\n") $11 = 13 Apple suggests the following tip for when attaching with… >>> More
Why does gdb show two different returns?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello all, Last week I was a debugging a code and a weird situation came up: gdb passes through two different return clauses. I made a simple example that illustrates the situation: #include <iostream> using namespace std; int test() { string a = "asd"; string b = "asd"; while… >>> More
GDB Not Skipping Functions without Debug Info

as seen on Stack Overflow - Search for 'Stack Overflow'
I compiled GDB 7 on a Mac OS X Leopard system. When stepping through a C program, GDB fails to step through 'printf()' statements, which probably don't have associated debug information, and starts printing "Cannot find bounds of current function." Here's some output: $ /usr/local/bin/gdb try1 GNU… >>> More
How to manage memory using classes in Objective-C?

as seen on Stack Overflow - Search for 'Stack Overflow'
This is my first time creating an iPhone App and I am having difficulty with the memory management because I have never had to deal with it before. I have a UITableViewController and it all works fine until I try to scroll down in the simulator. It crashes saying that it cannot allocate that much… >>> More

Related posts about breakpoints

Breakpoints not working in Delphi 6 DirectShow source filter

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to debug my DirectShow source filter. I'm using Delphi Pro 6 on Windows XP along with the DSPACK component library. I'm using Skype as my host application, which I set in the Parameters option in the Run menu, for testing my source filter DLL (ax file extension). Skype runs fine and… >>> More
unable to place breakpoints in eclipse

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using eclipse europa (3.5) on windows vista home premium 64-bit using JDK 1.6.0_18 (32 BIT). Normally, I am able to put breakpoints just fine; However, for a particular class which is NOT part of the project (this class is inside a .JAR file (.JAR file is part of the project) ), although I have… >>> More
VS 2010 Debugger Improvements (BreakPoints, DataTips, Import/Export)

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
This is the twenty-first in a series of blog posts I’m doing on the VS 2010 and .NET 4 release. Today’s blog post covers a few of the nice usability improvements coming with the VS 2010 debugger. The VS 2010 debugger has a ton of great new capabilities. Features like Intellitrace… >>> More
Xdebug: remote debugging won't stop at breakpoints

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm having a problem with xdebug not stopping at breakpoints when using remote debugging (everything is fine when running scripts via the command line). It will break at the first line of the program, then exit, not catching any breakpoints. It used to work fine, until I switched over to using MacPorts… >>> More
XCode automatically deactivating breakpoints

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using xcode in C++. I'm trying to debug my project, but at random intervals, it seems to ignore my breakpoints. There are three things that it does: 1) Sometimes, when I run, it automatically switches to "de-activate break points" mode. (the relevant button goes light and says "Activate") 2)… >>> More