Having Trouble Debugging Gdb With Shared Libraries?

Table of Contents

Over the past few days, some users have encountered a known bug in the gdb shared debug library. This problem can occur for several reasons. Let’s discuss some of them below.

In general, gdb automatically loads common archive symbols. Can you use the set auto-solib-add command to control certain behaviors. However, in some cases (such as once debugging with gdbserver and using incompatible tokens or having old Android toolkits), GDB does not load symbols naturally. In this case, you can run the info sharedlibrary command to get a list of the shared libraries downloaded by email and mail, usually the den sharedlibrary command to force all symbols to be loaded.

If GDB absolutely doesn’t automatically load the debug symbols for someone’s library when debugging with gdbserver, don’t forget to Check the search path with the actual set solib-search-path command. This is

examples

In the example, we will now disable loading shared libraries by working with the auto-solib-add command set, then run the application, list articles and sources, load manually:

Symbols and VisualGDB compatibility

Normally, VisualGDB automatically handles the loading of the shared symbol library. Also, you can always run the sharedlibrary command in a GDB session window.

See See also

(gdb) solib automatic addition disabled by default
(gdb) main breakpoint break
Point A AT 0x80484ed: user’s main.cpp file, line 7.
Run (gdb)
Launcher: /home/testuser/libtest/testApp 1, enabled

breakpoint common() Main on .cpp:7
7 main()n”);
(gdb) printf(“In news sources
Source files searched for symbols:

Source files you need to read characters if needed:

(gdb) shared library
From Know How Syms Read Shared Object Library
0xb7fde820 0xb7ff6b9f No /lib/ld-linux.so.2
0xb7fd83a0 0xb7fd84c8 No /home/testuser/libtest/libTest.so
0xb7e30f10 0xb7f655cc No /lib/i386-linux-gnu/libc.so.Symbols 6
(gdb) shared via libTest
Reading /home/testuser/libtest/libTest.so out…done.
Symbols loaded for /home/testuser/libtest/libTest.sources so
(gdb) information
Source music whose symbols were found in:

Source files, which safe characters to read:

/home/testuser/libtest/libon.cpp
(gdb) escape lib.cpp:5
Breakpoint 2 0xb7fd846e: lib.cpp database, line 5.
(gdb) next
Continued.
In stop 2 main()

Point func() to lib.Printf(“In Function()n”);

cpp:5
five

Typically, when compiling a C/C++ program, the compiler generates base code. After creating object policies, the compiler also calls a kind of linker. of One of the main tasks of the linker is to provide code to the library functions in your program. The linker can generate this task in two ways, simply by copying the code from the result library into your object code, with some precautions. Unfortunately, the code is not copied by everyone with the performance libraries, but is instead available for selection at runtime.

Shared libraries become dynamic intime by simply specifying the exact address of the library. The only thing that functions take up memory in a special place is space, and almost any program can access it without making multiple copies of it. The libraries discussed are .so files.

This document describes the steps to build, publish, debug, and configure libraries for a specific TimeStorm remote target:

Open the C/C++ shared library. If you want to create a new C/C++ Shared Library, skip to Creating a C Shared Library with Hello in the World Library c section below.
Create and compile a C/C++ project
Related Libraries
Create shared shared c/c++ library project
Set up the debug layout of the remote target a
Debug the shared library

1. Open Your Shared C/C++

Note the library. If you want to link to external shared libraries, skip step 1 and go to step 2.

Open a shared C/C++ library project using Explorer (we’re implementing a C/C++ project, no doubt built usingHello World C libraries) as shown below.

2. Create Compilation And C/C++ Project

Note. If you already have a C/C++ project, skip step 2 and follow step 3.

Create a C/C++ application that uses the shared library you are using. For more information about creating a new C/C++ application, see How to start a new application project (C/C++).

3. Link The Libraries Shared With The C/C++ Project:

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After creating a C/C++ project (example: C application project), follow these steps to link the shared library to the shared C/C++ project.

In the Project Explorer, right-click on the task (Appendix C), then select Properties → C/C++ Common → and Collapse Symbol Paths → References → Enable Library Prediction Sharing » (HelloWorldSharedLibrary) as shown below.< /li >
On “Languages”, click “My Included Files” and select “GNU”. Add the source code of the shared libraries to the directory below.

In “C/C++ Build Settings” → “Tool Settings” → “Gcc c Linker” →”Libraries”. In the Libraries section, click (-l) “Add Alternative” and add the library (HelloWorldSharedLibrary) as shown below.

Add the .library .destination .(..so .files location) to the library track search (-L) by clicking the Add button and specifying the destination using the file software workspace buttons or as shown below.< /p>