GDB - githeim/windheim_archive GitHub Wiki

Print Settings

GDB Print Settings

(gdb) set print elements unlimited

(gdb) set print symbol on

(gdb) set print array on

Show breakpoints

(gdb) i b

(gdb) info breakpoints

Conditional breakpoint

(gdb) condition [B] var == 1

The [B] is the breakpoint number

Print Structure value by address

(gdb) p *(b2Body *)(0x555555f34750)

Multi threads debugging

show thread info

(gdb) info threads
(gdb) i threads
  Id   Target Id                                           Frame 
* 1    Thread 0x7ffff60a5fc0 (LWP 13828) "test_yk_adv-1.0" __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >::destroy<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > (this=0x555555721dc0, __p=0x55555574e510) at /usr/include/c++/11/ext/new_allocator.h:166
  2    Thread 0x7ffff609b640 (LWP 13829) "test_yk_adv-1.0" 0x00007ffff78e4868 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7ffff60932f0, rem=rem@entry=0x0)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
  3    Thread 0x7fffedbff640 (LWP 13831) "SDLHotplugALSA"  0x00007ffff78e4868 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fffedbf7480, rem=0x7fffedbf7490)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78

change thread

(gdb) thread [THREAD_ID]

apply thread & args

(gdb) thread [THREAD_ID] [all] args

Set init option with .gdbinit

make the file '~/.gdbinit'

set breakpoint pending on           
break MyCode.cpp:329

This gonna set the default break point.

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