Troubleshooting GDB Debug Core file function name display as question mark

About GDB Debugging a core file is always a question of a bunch of question marks

Problem Description: You have added-G to the compilation option, but when you view the core file, it is a bunch of question marks, using the command: Gdb-c core

Solution: Since the use of gdb-c core is not very well supported in some systems, the following two methods are recommended:

1) gdb exe

(GDB) Core-file core

2) Gdb-c Core

(gdb) file exe

Troubleshooting GDB Debug Core file function name display as question mark