如何在GDB中重新运行程序几次？ [英] How to re-run program in GDB several times?

问题描述

我有一个偶尔失败的程序，但是有同样的错误。为了调试它，我想在GDB下运行它，直到它失败，设置断点并重新运行它。
我该做什么：

I have a program which fails sporadically, but with the same error. To debug it I'd like to run it under GDB until it fails, set breakpoints and re-run it. what do I do:

gdb --args /path/to/program <program args>

但是我找不到任何地方，例如我如何告诉GDB运行这个程序100次 。

But I can't find anywhere how do I tell GDB "run this program 100 times" for example.

推荐答案

这个gdb脚本会运行程序100次，或者直到它接收到一个信号。如果程序由于信号而停止，则 $ _ siginfo 是非空的，如果程序退出则无效。据我所知，包括断点，观察点和单步执行的任何停止进程都会将 $ _ siginfo 设置为某个值。

This gdb script will run the program 100 times, or until it receives a signal. $_siginfo is non-void if the program is stopped due to a signal, and is void if the program exited. As far as I can tell, any stop of the process, including breakpoints, watchpoints, and single-stepping, will set $_siginfo to something.

set $n = 100
while $n-- > 0
  printf "starting program\n"
  run
  if $_siginfo
    printf "Received signal %d, stopping\n", $_siginfo.si_signo
    loop_break
  else
    printf "program exited\n"
  end
end

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