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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-O3 -Warray-bounds=2" } */
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3
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4 typedef __SIZE_TYPE__ size_t;
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5 extern void* malloc(size_t x);
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6
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7 int e[3];
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8
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9 struct f { int f[3]; };
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10
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11 extern void bar(int v[]);
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12
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13 struct h {
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14
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15 int i;
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16 int j[];
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17 };
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18
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19 struct h0 {
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20
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21 int i;
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22 int j[0];
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23 };
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24
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25 struct h0b {
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26
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27 int i;
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28 int j[0];
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29 int k;
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30 };
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31
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32 struct h1 {
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33
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34 int i;
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35 int j[1];
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36 };
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37
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38 struct h1b {
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39
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40 int i;
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41 int j[1];
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42 int k;
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43 };
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44
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45 struct h3 {
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46
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47 int i;
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48 int j[3];
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49 };
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50
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51 struct h3b {
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52
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53 int i;
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54 int j[3];
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55 int k;
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56 };
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57
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58 void foo(int (*a)[3])
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59 {
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60 (*a)[4] = 1; /* { dg-warning "subscript is above array bound" } */
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61 a[0][0] = 1; // ok
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62 a[1][0] = 1; // ok
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63 a[1][4] = 1; /* { dg-warning "subscript is above array bound" } */
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64
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65 int c[3] = { 0 };
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66
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67 c[4] = 1; /* { dg-warning "subscript is above array bound" } */
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68
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69 e[4] = 1; /* { dg-warning "subscript is above array bound" } */
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70
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71 struct f f;
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72 f.f[4] = 1; /* { dg-warning "subscript is above array bound" } */
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73
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74 struct h* h = malloc(sizeof(struct h) + 3 * sizeof(int));
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75 struct h0* h0 = malloc(sizeof(struct h0) + 3 * sizeof(int));
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76 struct h1* h1 = malloc(sizeof(struct h1) + 3 * sizeof(int));
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77 struct h3* h3 = malloc(sizeof(struct h3));
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78
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79 h->j[4] = 1; // flexible array member
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80 h0->j[4] = 1; // zero-sized array extension
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81 h1->j[4] = 1; /* { dg-warning "subscript is above array bound" } */
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82 h3->j[4] = 1; /* { dg-warning "subscript is above array bound" } */
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83
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84 struct h0b* h0b = malloc(sizeof(struct h) + 3 * sizeof(int));
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85 struct h1b* h1b = malloc(sizeof(struct h1b) + 3 * sizeof(int));
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86 struct h3b* h3b = malloc(sizeof(struct h3b));
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87 // h0b->j[4] = 1;
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88 h1b->j[4] = 1;; /* { dg-warning "subscript is above array bound" } */
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89 h3b->j[4] = 1;; /* { dg-warning "subscript is above array bound" } */
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90
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91 // make sure nothing gets optimized away
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92 bar(*a);
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93 bar(c);
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94 bar(e);
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95 bar(f.f);
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96 bar(h1->j);
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97 bar(h3->j);
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98 bar(h3b->j);
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99 bar(h1b->j);
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100 bar(h->j);
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101 bar(h0->j);
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102 }
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103
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