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comparison gcc/testsuite/gcc.dg/Warray-bounds-49.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 /* PR middle-end/91647 - missing -Warray-bounds accessing a zero-length array
2 of a declared object
3 { dg-do "compile" }
4 { dg-options "-O2 -Wall" } */
5
6 struct __attribute__ ((aligned (16))) A16
7 {
8 __INT64_TYPE__ i8;
9 __INT16_TYPE__ i2;
10 __INT16_TYPE__ a2[];
11 };
12
13 struct A16 a0 = { };
14
15 void test_a0 (void)
16 {
17 // The first three elements fit in the tail padding.
18 a0.a2[0] = 0; a0.a2[1] = 1; a0.a2[2] = 2;
19
20 a0.a2[3] = 3; // { dg-warning "array subscript 3 is above array bounds of 'short int\\\[0]'" }
21 }
22
23
24 struct A16 a1 = { .a2 = { 1 } };
25
26 void test_a1 (void)
27 {
28 a1.a2[0] = 0; a1.a2[1] = 1; a1.a2[2] = 2;
29
30 a1.a2[3] = 3; // { dg-warning "array subscript 3 is above array bounds of 'short int\\\[0]'" }
31 }
32
33
34 struct A16 a2 = { .a2 = { 1, 2 } };
35
36 void test_a2 (void)
37 {
38 a2.a2[0] = 0; a2.a2[1] = 1; a2.a2[2] = 2;
39
40 a2.a2[3] = 3; // { dg-warning "array subscript 3 is above array bounds of 'short int\\\[0]'" }
41 }
42
43
44 struct A16 a3 = { .a2 = { 1, 2, 3 } };
45
46 void test_a3 (void)
47 {
48 a3.a2[0] = 0; a3.a2[1] = 1; a3.a2[2] = 2;
49
50 a3.a2[3] = 3; // { dg-warning "array subscript 3 is above array bounds of 'short int\\\[0]'" }
51 }
52
53
54 struct A16 a4 = { .a2 = { 1, 2, 3, 4 } };
55
56 void test_a4 (void)
57 {
58 a4.a2[0] = 0; a4.a2[1] = 1; a4.a2[2] = 2; a4.a2[3] = 3;
59
60 a4.a2[4] = 4; // { dg-warning "array subscript 4 is above array bounds of 'short int\\\[0]'" }
61 }
62
63
64 struct A16 a5 = { .a2 = { 1, 2, 3, 4, 5 } };
65
66 void test_a5 (void)
67 {
68 a5.a2[0] = 0; a5.a2[1] = 1; a5.a2[2] = 2; a5.a2[3] = 3; a5.a2[4] = 4;
69
70 a5.a2[5] = 5; // { dg-warning "array subscript 5 is above array bounds of 'short int\\\[0]'" }
71 }
72
73
74 struct A16 a6 = { .a2 = { 1, 2, 3, 4, 5, 6 } };
75
76 void test_a6 (void)
77 {
78 a6.a2[0] = 0; a6.a2[1] = 1; a6.a2[2] = 2; a6.a2[3] = 3; a6.a2[4] = 4;
79 a6.a2[5] = 5;
80
81 a6.a2[6] = 6; // { dg-warning "array subscript 6 is above array bounds of 'short int\\\[0]'" }
82 }
83
84
85 struct A16 a7 = { .a2 = { 1, 2, 3, 4, 5, 6, 7 } };
86
87 void test_a7 (void)
88 {
89 a7.a2[0] = 0; a7.a2[1] = 1; a7.a2[2] = 2; a7.a2[3] = 3; a7.a2[4] = 4;
90 a7.a2[5] = 5; a7.a2[5] = 5; a7.a2[6] = 6;
91
92 a7.a2[7] = 7; // { dg-warning "array subscript 7 is above array bounds of 'short int\\\[0]'" }
93 }
94
95
96 struct A16 a8 = { .a2 = { 1, 2, 3, 4, 5, 6, 7, 8 } };
97
98 void test_a8 (void)
99 {
100 a8.a2[0] = 0; a8.a2[1] = 1; a8.a2[2] = 2; a8.a2[3] = 3; a8.a2[4] = 4;
101 a8.a2[5] = 5; a8.a2[5] = 5; a8.a2[6] = 6; a8.a2[7] = 7;
102
103 a8.a2[8] = 8; // { dg-warning "array subscript 8 is above array bounds of 'short int\\\[0]'" }
104 }
105
106
107 struct A16 a9 = { .a2 = { 1, 2, 3, 4, 5, 6, 7, 8, 9 } };
108
109 void test_a9 (void)
110 {
111 a8.a2[0] = 8; a8.a2[1] = 7; a8.a2[2] = 6; a8.a2[3] = 5; a8.a2[4] = 4;
112 a8.a2[5] = 3; a8.a2[5] = 2; a8.a2[6] = 1; a8.a2[7] = 0;
113
114 a8.a2[9] = 8; // { dg-warning "array subscript 9 is above array bounds of 'short int\\\[0]'" }
115 }