$ cat tinline.c

int i;

static inline int finline(void)
{  
        i++;
}
 
main()
{  
        finline();
}
 
$ gcc -O2 -gsplit-dwarf tinline.c
$ addr2line -i -e a.out 0x4003b0
/home/ak/tsrc/tinline.c:6
$ gcc -O2  -g tinline.c
$ addr2line -i -e a.out 0x4003b0
/home/ak/tsrc/tinline.c:6
/home/ak/tsrc/tinline.c:12
$

Similar with objdump. Happens on mainline too.

This currently affects the Linux kernel.