在gdb中包含malloc.c的源代码？ [英] Include source code of malloc.c in gdb?

问题描述

如何在gdb中包含/查看 malloc 的源代码？

我想做一个在 gdb 中逐步执行，当调用任何malloc函数时，进入 malloc.c 源代码。

目前gdb所说的是：
malloc.c：没有这样的文件或目录。 p>

此这里的人也面临着同样的问题，但他们并没有提到一个解决方案，即如何真正进入malloc的源代码。

我在 Ubuntu服务器14.04 ，我已经尝试安装以下内容：
libc6-dbg ， libc6 -dev 和 libc6-dbgsym 。
我甚至不知道这些包之一可能有帮助，但安装 libc-dbgsym 给我以下错误：

  dpkg：错误处理归档/var/cache/apt/archives/libc6-dbgsym_2.19-0ubuntu6.6_amd64.ddeb（--unpack）：尝试覆盖
'/usr/lib/debug/usr/lib/x86_64-linux-gnu/audit/sotruss-lib.so'，其中
也在包libc6-dbg：amd64 2.19-0ubuntu6中。 6 dpkg-deb：错误：
子程序粘贴被信号（Broken pipe）杀死
  

解决方案

以下为我工作。不确定是否有更好的方法。

1. 安装libc6-dbg（您已经完成）：
   sudo apt-get install libc6-dbg


2. 安装eglibc-source软件包（ubuntu实际使用eglibc）： sudo apt -get install eglibc-source 。


3. 解压缩/ usr / src / glibc中安装的tar文件： / usr / src / glibc $ sudo tar xvf eglibc-2.19.tar.xz


4. 打开gdb并添加到malloc源的路径： （gdb）dir /usr/src/glibc/eglibc-2.19/malloc

（gdb）n

13 char * c = malloc（100）;

（gdb）s

__ GI___libc_malloc（bytes = 100）at malloc.c：2876 2876

{

（gdb）

How can I include/view the source code of malloc in gdb?

I want to do a step by step execution in gdb, and step into malloc.c source code when any of the malloc functions is called.

Currently what gdb says is: malloc.c: No such file or directory.

This guy here faced the same problem, but they do not mention a solution, ie how to actually step into the source code of malloc.

I am on Ubuntu server 14.04, and I have already tried to install the following: libc6-dbg, libc6-dev, and libc6-dbgsym. I don't even know if one of these packages might help, but installing the libc-dbgsym gives me the following error:

dpkg: error processing archive /var/cache/apt/archives/libc6-dbgsym_2.19-0ubuntu6.6_amd64.ddeb (--unpack):  trying to overwrite
    '/usr/lib/debug/usr/lib/x86_64-linux-gnu/audit/sotruss-lib.so', which
    is also in package libc6-dbg:amd64 2.19-0ubuntu6.6 dpkg-deb: error:
    subprocess paste was killed by signal (Broken pipe)

解决方案

The following worked for me. Not sure whether there is a better way.

1. Install libc6-dbg (which you have already done): sudo apt-get install libc6-dbg
2. Install the eglibc-source package (ubuntu actually uses eglibc): sudo apt-get install eglibc-source.
3. Unpack the tar file that was installed in /usr/src/glibc: /usr/src/glibc $ sudo tar xvf eglibc-2.19.tar.xz
4. Crank up gdb and add in the path to the malloc source: (gdb) dir /usr/src/glibc/eglibc-2.19/malloc

(gdb) n

13 char *c = malloc(100);

(gdb) s

__GI___libc_malloc (bytes=100) at malloc.c:2876 2876

{

(gdb)

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