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Rikitikitavi
Asked:2021-11-19 10:55:42 +0000 UTC2021-11-19 10:55:42 +0000 UTC

通过 gdb 在 QtCreator 中显示变量

  • 772

gdb 调试器不显示类型变量的内容std::string

在此处输入图像描述

此外，如果您在控制台中查看 gdb，它会显示所有内容：

 milai@milai:~/projects/test_project/build/bin$ gdb ./test_project 
 GNU gdb (Ubuntu 9.1-0ubuntu1) 9.1
 Copyright (C) 2020 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 Type "show copying" and "show warranty" for details.
 This GDB was configured as "x86_64-linux-gnu".
 Type "show configuration" for configuration details.
 For bug reporting instructions, please see:
 <http://www.gnu.org/software/gdb/bugs/>.
 Find the GDB manual and other documentation resources online at:
     <http://www.gnu.org/software/gdb/documentation/>.

 For help, type "help".
 Type "apropos word" to search for commands related to "word"...
 Reading symbols from ./test_project...
 (gdb) list
 1  #include <string>
 2  #include <iostream>
 3  
 4  int main(int argc, char* argv[])
 5  {
 6      const std::string str = "abc";
 7      std::cout << str << std::endl;
 8      return 0;
 9  }
 (gdb) b 7
 Breakpoint 1 at 0x12bb: file /home/milai/projects/test_project/main.cpp, line 7.
 (gdb) r
 Starting program: /home/milai/projects/test_project/build/bin/test_project 

 Breakpoint 1, main (argc=1, argv=0x7fffffffdec8) at /home/milai/projects/test_project/main.cpp:7
 7      std::cout << str << std::endl;
 (gdb) info locals 
 str = "abc"
 (gdb) c
 Continuing.
 abc
 [Inferior 1 (process 40257) exited normally]
 (gdb) quit
 milai@milai:~/projects/test_project/build/bin$

可能是什么问题呢？

环境：

  • Ubuntu 20.04.1
  • qtcreator：4.11.0
  • gdb:9.1
  • g++ 9.3.0
c++

1 个回答

  1. Best Answer

    默认情况下，QtCreator 不会从 gdb 加载允许“相当复杂类型”的脚本，但这可以在设置中启用。

    菜单工具->选项，然后“调试选项卡”有一个复选框“加载系统 gdb 漂亮打印机”。

    • 1

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