The dbx debugger

最新推荐文章于 2024-02-05 13:58:33 发布

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#interface #primitive #fortran #variables #command #aix

本文介绍了dbx调试器，它对追踪代码错误很有用，虽自带的用户界面较原始，需练习使用，但能节省查找编程错误的时间。有适用于AIX的X - windows界面，也可使用Gnu - emacs界面。它能逐行追踪程序执行并显示变量状态，还可监控特定变量，不过需特殊编译选项。

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The dbx debugger is very useful for tracking down errors in your code. Used by itself, dbx has a rather primitive user interface, and requires some practice to use. However, the initial effort in learning to use it is often repaid by the time it saves you finding programming errors. There is a fancier X-windows interface for AIX, invoked with the command xde, but I prefer the Gnu-emacs interface, discussed below.

The dbx debugger is able to track the execution of your program line-by-line in the source code (C or Fortran) and tell you the status of every variable you are computing. It is also possible to tell it to watch a particular variable and report when it changes. In order for the debugger to perform this trick, it is necessary to compile your code with a special option, so the compiled code contains information about the symbolic names of your variables and has the appropriate cross references to the source code.