c++ - 需要建议来查找 qt c++ 应用程序中的崩溃问题

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我的 Qt C++ 应用程序随机崩溃。我生成其崩溃日志并获取以下详细信息。

GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
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 ./LaserModule_Debug...done.

warning: core file may not match specified executable file.
[New LWP 10616]
[New LWP 10624]
[New LWP 10625]
[New LWP 10626]
[New LWP 10631]
Core was generated by `/home/user/AA/Application'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x76576ade in ?? ()
[Current thread is 1 (LWP 10616)]
(gdb) 

我正在运行qt c++应用程序并使用调试符号对其进行编译

CONFIG += c++14 debug link_pkgconfig

我从内核获取了核心文件，并使用包含 GDB 符号的二进制文件运行该核心文件。

我的二进制文件包含 GDB 符号，但我无法从 gdb 日志中获取任何正确的点。

所以我认为我的应用程序使用了任何共享库，并且该共享库存在实际问题。

找到此崩溃的下一步是什么？

Answer 1

尝试运行以下代码:

class Scratch {
  public static void main(String[] args) {
    System.out.println("Hello\r\n".length());
  }
}

太看到你关于“Hello\r\n”长度为 5 的假设是不正确的。