1// RUN: %clang_cc1 -emit-llvm -o %t %s
2
3// RUN: grep '@r = common global \[1 x .*\] zeroinitializer' %t
4
5int r[];
6int (*a)[] = &r;
7
8struct s0;
9struct s0 x;
10// RUN: grep '@x = common global .struct.s0 zeroinitializer' %t
11
12struct s0 y;
13// RUN: grep '@y = common global .struct.s0 zeroinitializer' %t
14struct s0 *f0() {
15  return &y;
16}
17
18struct s0 {
19  int x;
20};
21
22// RUN: grep '@b = common global \[1 x .*\] zeroinitializer' %t
23int b[];
24int *f1() {
25  return b;
26}
27
28// Check that the most recent tentative definition wins.
29// RUN: grep '@c = common global \[4 x .*\] zeroinitializer' %t
30int c[];
31int c[4];
32
33// Check that we emit static tentative definitions
34// RUN: grep '@c5 = internal global \[1 x .*\] zeroinitializer' %t
35static int c5[];
36static int func() { return c5[0]; }
37int callfunc() { return func(); }
38
39