| /* Note that struct foo is opaque (never defined) in this file. This | |
| is allowed by C since this file does not reference any members of | |
| the structure. The debugger needs to be able to associate this | |
| opaque structure definition with the full definition in another | |
| file. | |
| */ | |
| struct foo *foop; | |
| extern struct foo *getfoo (); | |
| extern void putfoo (struct foo *foop); | |
| int main () | |
| { | |
| foop = getfoo (); | |
| putfoo (foop); | |
| return 0; | |
| } |