Stuff about GNU Debugger (AKA gdb).

• 10 things you can only do with GDB

• https://github.com/trstringer/cli-debugging-cheatsheets/blob/master/c.md

Usage patterns

Run a program w/ arguments:

gdb --args ${PROGRAM_NAME} ${ARGUMENTS}

to automatically start debugging, put commands into a file, including breakpoints if you want them. E.g.:

breakpoint main.cpp:1
run

and then execute gdb with -x:

gdb -x ${COMMANDS_FILE} --args ${PROGRAM_NAME} ${ARGUMENTS}

Quick reference

• List all variables in current context: info locals if at a breakpoint, or bt full if at a breakpoint

• generate-core-file to generate a coredump. Be aware of this bug on RHEL 7.x, for which the workaround is info threads before creating the coredump.