如何传递参数并将stdin从一个文件重定向到gdb中运行的程序?

I usually run a program as :

我通常以以下方式运行一个程序:

./a.out arg1 arg2 <file

I would like to debug it using gdb.

我想使用gdb调试它。

I am aware of the set args functionality, but that only works from the gdb prompt.

我知道set args功能，但它只能在gdb提示符下工作。

4 个解决方案

#1

130

Pass the arguments to the run command from within gdb.

将参数从gdb内部传递给run命令。

$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t

#2

406

You can do this:

你可以这样做:

gdb --args path/to/executable -every -arg you can=think < of

The magic bit being --args.

神奇的是，args。

Just type run in the gdb command console to start debugging.

只需在gdb命令控制台中键入run以启动调试。

#3

If you want to have bare run command in gdb to execute your program with redirections and arguments, you can use set args:

如果您想在gdb中使用裸运行命令来执行带有重定向和参数的程序，您可以使用set args:

% gdb ./a.out
(gdb) set args arg1 arg2 <file
(gdb) run

I was unable to achieve the same behaviour with --args parameter, gdb fiercely escapes the redirections, i.e.

我无法用-args参数实现同样的行为，gdb强烈地逃避重定向，即。

% gdb --args echo 1 2 "<file"
(gdb) show args
Argument list to give program being debugged when it is started is "1 2 \<file".
(gdb) run
...
1 2 <file
...

This one actually redirects the input of gdb itself, not what we really want here

这个实际上重定向gdb本身的输入，而不是我们真正想要的

% gdb --args echo 1 2 <file
zsh: no such file or directory: file

#4

Start GDB on your project.

在项目上启动GDB。

Go to project directory, where you've already compiled the project executable. Issue the command gdb and the name of the executable as below:

转到项目目录，在那里您已经编译了项目可执行文件。发出命令gdb和可执行文件的名称如下:

gdb projectExecutablename

gdb projectExecutablename

This starts up gdb, prints the following: GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. ................................................. Type "apropos word" to search for commands related to "word"... Reading symbols from projectExecutablename...done. (gdb)

Before you start your program running, you want to set up your breakpoints. The break command allows you to do so. To set a breakpoint at the beginning of the function named main:

在开始运行程序之前，您需要设置断点。break命令允许您这样做。在名为main的函数的开头设置断点:

(gdb) b main

主要(gdb)b
Once you've have the (gdb) prompt, the run command starts the executable running. If the program you are debugging requires any command-line arguments, you specify them to the run command. If you wanted to run my program on the "xfiles" file (which is in a folder "mulder" in the project directory), you'd do the following:

一旦有了(gdb)提示符，run命令将启动可执行文件的运行。如果正在调试的程序需要任何命令行参数，则将它们指定为run命令。如果您想在“xfiles”文件(项目目录中的“mulder”文件夹中)上运行我的程序，请执行以下操作:

(gdb) r mulder/xfiles

(gdb)r穆德/ xfiles

Hope this helps.

希望这个有帮助。

Disclaimer: This solution is not mine, it is adapted from https://web.stanford.edu/class/cs107/guide_gdb.html This short guide to gdb was, most probably, developed at Stanford University.

声明:这个解决方案不是我的，它改编自https://web.stanford.edu/class/cs107/guide_gdb.html。

#1

130