blob: e955f2e6ce13c6e7a8ac86e4e1ef523af0ecb6a0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* PR tree-optimization/71625 - missing strlen optimization on different
array initialization style
Verify that zero-length array initialization results in the expected
array sizes.
{ dg-do compile }
{ dg-options "-Wall -Wno-unused-local-typedefs" } */
#define A(expr) typedef char A[-1 + 2 * !!(expr)];
const char a[] = { };
A (sizeof a == 0);
const char b[0] = { };
A (sizeof b == 0);
const char c[0] = { 1 }; /* { dg-warning "excess elements" } */
A (sizeof c == 0);
void test_auto_empty (void)
{
const char a[] = { };
A (sizeof a == 0);
}
void test_auto_zero_length (void)
{
const char a[0] = { };
A (sizeof a == 0);
const char b[0] = { 0 }; /* { dg-warning "excess elements" } */
A (sizeof b == 0);
const char c[0] = "";
A (sizeof c == 0);
}
void test_compound_zero_length (void)
{
A (sizeof (const char[]){ } == 0);
A (sizeof (const char[0]){ } == 0);
A (sizeof (const char[0]){ 0 } == 0); /* { dg-warning "excess elements" } */
A (sizeof (const char[0]){ 1 } == 0); /* { dg-warning "excess elements" } */
A (sizeof (const char[0]){ "" } == 0);
A (sizeof (const char[0]){ "1" } == 0); /* { dg-warning "too long" } */
}
|
