使用gdb的核心转储分析 [英] Core dump analysis using gdb
问题描述
我有几个关于核心转储的问题。我在Windows上有gdb，使用Cygwin。
I have a couple of questions regarding core dumps. I have gdb on Windows, using Cygwin.
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核心转储文件的位置是什么？它是a.exe.stackdump文件吗？ （这是唯一的文件生成后崩溃）我读在其他论坛，核心转储文件命名为核心。但是我没有看到任何名为core的文件。
What is the location of core dump file? Is it a.exe.stackdump file? (This is the only file that generated after crash) I read on other forums that the core dump file is named "core". But I don't see any file with name "core".
打开和理解核心转储文件的命令是什么？ li>
What is the command for opening and understanding core dump file?
推荐答案
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您需要配置Cygwin以生成核心转储包含
You need to configure Cygwin to produce core dumps by including
error_start = x：\path\to\dumper.exe
在您的 CYGWIN 环境变量中（参见这里在转储部分了解更多信息）。
error_start=x:\path\to\dumper.exe
in your CYGWIN environment variable (see here in section "dumper" for more information). If you didn't do this, you will only get a stacktrace -- which may also help you in diagnosing the problem, though.
启动gdb如下所示：如果你没有这样做，你只会得到一个堆栈跟踪 - 这也可以帮助你诊断问题。将其附加到核心转储文件：
Start gdb as follows to attach it to a core dump file:
gdb myexecutable --core = mycorefile
现在，您可以使用常用的gdb命令打印一个stacktrace，检查变量的值，等等。
gdb myexecutable --core=mycorefile
You can now use the usual gdb commands to print a stacktrace, examine the values of variables, and so on.
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