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What is the method of utilizing gdb to troubleshoot a stack segmentation fault?

asked 2022-05-11 11:00:00 +0000

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answered 2022-01-26 14:00:00 +0000

devzero gravatar image

Here are the steps to utilize gdb to troubleshoot a stack segmentation fault:

  1. Compile your program with the -g flag to include debugging information:
$ gcc -g myprogram.c -o myprogram
  1. Start the program with gdb:
$ gdb myprogram
  1. Set a breakpoint at the source line where the segmentation fault occurs:
(gdb) break <line_number>
  1. Run the program:
(gdb) run
  1. When the program reaches the breakpoint, use the backtrace command to see the function call stack:
(gdb) backtrace
  1. Look for any functions that are not part of your own program (such as system libraries) and skip them with the command:
(gdb) down
  1. Check the variables in the current context with the command:
(gdb) info locals
  1. Try to reproduce the error by stepping through the code with the next command:
(gdb) next
  1. If the error occurs again, use the print command to check the value of variables:
(gdb) print <variable_name>
  1. If you have identified the source of the error, quit the program with the command:
(gdb) quit
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Asked: 2022-05-11 11:00:00 +0000

Seen: 10 times

Last updated: Jan 26 '22