1 /* Test -Wsizeof-pointer-div warnings. */
2 /* { dg-do compile } */
3 /* { dg-options "-Wall" } */
4
5 int
f1(int * array)6 f1 (int *array)
7 {
8 int i;
9 i = sizeof array / sizeof *array; /* { dg-warning "does not compute the number of array elements" } */
10 i += sizeof array / sizeof array[0]; /* { dg-warning "does not compute the number of array elements" } */
11 i += sizeof(array) / sizeof(*array); /* { dg-warning "does not compute the number of array elements" } */
12 i += sizeof(array) / sizeof(array[0]); /* { dg-warning "does not compute the number of array elements" } */
13 i += (sizeof(array)) / (sizeof(array[0])); /* { dg-warning "does not compute the number of array elements" } */
14 i += sizeof(array) / sizeof(int); /* { dg-warning "does not compute the number of array elements" } */
15 i += sizeof(array) / sizeof(char);
16 i += sizeof(*array) / sizeof(char);
17 i += sizeof(array[0]) / sizeof(char);
18 return i;
19 }
20
21 int
f2(void)22 f2 (void)
23 {
24 int array[10];
25 int i;
26 i = sizeof array / sizeof *array;
27 i += sizeof array / sizeof array[0];
28 i += sizeof(array) / sizeof(*array);
29 i += sizeof(array) / sizeof(array[0]);
30 i += (sizeof(array)) / (sizeof(array[0]));
31 i += sizeof(array) / sizeof(int);
32 i += sizeof(array) / sizeof(char);
33 i += sizeof(*array) / sizeof(char);
34 i += sizeof(array[0]) / sizeof(char);
35 return i;
36 }
37
38 int
f3(int a[])39 f3 (int a[])
40 {
41 return sizeof a / sizeof *a; /* { dg-warning "Wsizeof-array-argument" } */
42 }
43