GDB - The GNU Debugger
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Published on ● Video Link: https://www.youtube.com/watch?v=x_z1_5HaIyY
2GDB is a great tpol to have in your toolchest. There's kind of three main ways of getting into it (compile with g++ -g main.cc):
1) If your program is crashing and core dumping: gdb a.out core
2) If your program is infinite looping: gdb a.out, then hit run, then while it's running in an infinite loop, hit ctrl-c and find out where it is
3) If your program is just giving bad output: gdb a.out, and then set a breakpoint on the area you're interested in (b 50 will set a breakpoint on line 50 for example), then run
When you're there, you can s to step into a line, n to step over, bt to backtrace, and print to print variables.
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Tags:
csci 41
gdb
debugging