-ggdb가 우리가 사용했던 다른 디버그 옵션보다 더 잘 작동 한 예가 하나 이상 있습니다.
amitkar@lohgad:~> cat > main.c
#include <stdio.h>
int main(int argc, char **argv)
{
printf("Args :%d\n", argc);
for ( ;argc > 0;)
printf("%s\n", argv[--argc]);
return 0;
}
amitkar@lohgad:~> gcc -gstabs+ main.c -o main
amitkar@lohgad:~> file main
main: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux 2.6.4, dynamically linked (uses shared libs), not stripped
amitkar@lohgad:~> /usr/bin/gdb ./main
GNU gdb 6.6.50.20070726-cvs
Copyright (C) 2007 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-suse-linux"...
Using host libthread_db library "/lib64/libthread_db.so.1".
(gdb) break main
Breakpoint 1 at 0x400577: file main.c, line 5.
(gdb) run
Starting program: /home/amitkar/main
Breakpoint 1, main (argc=Cannot access memory at address 0x8000df37d57c
) at main.c:5
5 printf("Args :%d\n", argc);
(gdb) print argc
Cannot access memory at address 0x8000df37d57c
(gdb)
참고 : 이것은 x86-64 상자에서만 발생하며 -ggdb로 컴파일하면 사라집니다. 그러나 최신 버전의 디버거는 -gstabs +에서도 작동합니다.