1 #include <mcheck.h>
2 #include <stdio.h>
3 #include <string.h>
4 
5 extern const char *foo (void);
6 
7 int
main(void)8 main (void)
9 {
10   const char *s;
11 
12   mtrace ();
13 
14   s = foo ();
15 
16   printf ("called `foo' from `%s'\n", s);
17 
18   return strcmp (s, "filtmod2.c");
19 }
20