gcc -g :what will happen

Question

This question was asked to me in an interview.

they asked me how to generate a core dump file with which i can debug. then i said that with -g flag in

Answer 1

core file is generated on Segmentation Fault or such exceptions. gdb source.cc core is one way to look into the core file. Backtrace and investigating every frame is a start at looking into the core. -g adds debugging symbols in the binary.