Running code inside gdb debugger

Question

Is it possible to run code inside gdb? For example, if I were debugging a .c file, and I wanted to get the strlen() of a character array at a particular point in time, I can't just type in strlen(str) into the buffer - it is an invalid command. What can I do?

You could try using the print command, I am not sure if it allows you to call arbitrary functions though — BlackBear
– BlackBear, Commented Feb 16, 2014 at 18:38
Not only is it possible (in most cases), you can even set and hit breakpoints inside code you explicitly evaluate — Leeor
– Leeor, Commented Feb 16, 2014 at 20:06

Nipun Talukdar · Accepted Answer · 2014-02-16 18:47:29Z

10

From gdb prompt call strlen(the_char_array). Eg.,

(gdb) call strlen(the_char_array)

answered Feb 16, 2014 at 18:47

Nipun Talukdar

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