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/* In a.c */
extern int *a;   /* UB 15 */

int f(unsigned i, int x) {
  int tmp = a[i];   /* UB 37: read access */
  a[i] = x;         /* UB 37: write access */
  return tmp;
}

/* In b.c */
int a[] = { 1, 2, 3, 4 };   /* UB 15 */

/* In bash/bashline.h */
extern char* bash_groupname_completion_function(const char*, int);   /* UB 15 */

/* In a.c */
#include <bashline.h>

void f(const char *s, int i) {
  bash_groupname_completion_function(s, i);   /* UB 41 */
}

/* In b.c */
int bash_groupname_completion_func;   /* UB 15 */