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annotate gcc/testsuite/g++.dg/warn/Wplacement-new-size-5.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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rev   line source
131
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1 // PR c++/83058 - ICE on C++ code with negative array index: in
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2 // warn_placement_new_too_small
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3 // { dg-do compile }
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4 // { dg-additional-options "-Wplacement-new -Wno-pedantic" }
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5 // { dg-require-effective-target alloca }
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6
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7 #define SIZE_MAX __SIZE_MAX__
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8 #define DIFF_MAX __PTRDIFF_MAX__
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9 #define DIFF_MIN (-DIFF_MAX - 1)
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10
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11 void* operator new (__SIZE_TYPE__ n, void *p) { return p; }
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12 void* operator new[] (__SIZE_TYPE__ n, void *p) { return p; }
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13
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14 struct A { };
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15
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16 char carr[2];
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17 int iarr[2];
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18
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19 struct C0 { char i, carr[0]; };
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20 struct I0 { int i, iarr[0]; };
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21 struct CX { char i, carr[]; };
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22 struct IX { int i, iarr[]; };
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23
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24 void test_single (C0 *pc, CX *qc, I0 *pi, IX *qi, int n)
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25 {
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26 new (&carr[DIFF_MIN]) A (); // { dg-warning "placement new constructing an object of type .A. and size .1. in a region of type .char \\\[2]. and size .0." }
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27 new (&carr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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28 new (carr -1 ) A; // { dg-warning "\\\[-Wplacement-new" }
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29 new (&carr[0]) A;
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30 new (carr) A;
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31 new (&carr[1]) A;
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32 new (carr + 1) A;
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33 new (&carr[n]) A;
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34 new (carr + n) A;
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35 new (&carr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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36 new (carr + DIFF_MAX) A; // { dg-warning "\\\[-Wplacement-new" }
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37 new (&carr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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38 new (carr + SIZE_MAX) A; // { dg-warning "\\\[-Wplacement-new" }
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39
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40 new (&pc->carr[DIFF_MIN]) A; // { dg-warning "\\\[-Wplacement-new" }
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41 new (&pc->carr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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42 new (&pc->carr[0]) A;
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43 new (&pc->carr[9]) A;
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44 new (&pc->carr[n]) A;
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45 new (&pc->carr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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46 new (&pc->carr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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47
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48 {
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49 /* The highest index at which a single A can be constructed. */
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50 enum { MAX = DIFF_MAX - sizeof *pc - sizeof (A) };
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51 new (&pc->carr[MAX]) A;
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52 new (&pc->carr[MAX + 1]) A; // { dg-warning "\\\[-Wplacement-new" }
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53 }
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54
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55 new (&qc->carr[DIFF_MIN]) A; // { dg-warning "\\\[-Wplacement-new" }
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56 new (&qc->carr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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57 new (&qc->carr[0]) A;
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58 new (&qc->carr[9]) A;
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59 new (&qc->carr[n]) A;
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60 new (&qc->carr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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61 new (&qc->carr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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62
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63 {
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64 /* The highest index at which a single A can be constructed. */
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65 enum { MAX = DIFF_MAX - sizeof *qc - sizeof (A) };
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66 new (&qc->carr[MAX]) A;
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67 new (&qc->carr[MAX + 1]) A; // { dg-warning "\\\[-Wplacement-new" }
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68 }
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69
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70 new (&pi->iarr[DIFF_MIN]) A; // { dg-warning "\\\[-Wplacement-new" }
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71 new (&pi->iarr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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72 new (&pi->iarr[0]) A;
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73 new (&pi->iarr[9]) A;
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74 new (&pi->iarr[n]) A;
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75 new (&pi->iarr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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76 new (&pi->iarr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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77
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78 {
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79 enum { MAX = (DIFF_MAX - sizeof *pi) / sizeof *pi->iarr };
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80 new (&pi->iarr[MAX]) A;
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81 new (&pi->iarr[MAX + 1]) A; // { dg-warning "\\\[-Wplacement-new" }
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82 }
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83
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84 new (&qi->iarr[DIFF_MIN]) A; // { dg-warning "\\\[-Wplacement-new" }
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85 new (&qi->iarr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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86 new (&qi->iarr[0]) A;
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87 new (&qi->iarr[9]) A;
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88 new (&qi->iarr[n]) A;
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89 new (&qi->iarr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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90 new (&qi->iarr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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91
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92 {
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93 enum { MAX = (DIFF_MAX - sizeof *qi) / sizeof *qi->iarr };
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94 new (&qi->iarr[MAX]) A;
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95 new (&qi->iarr[MAX + 1]) A; // { dg-warning "\\\[-Wplacement-new" }
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96 }
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97
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98 new (&iarr[DIFF_MIN]) A; // { dg-warning "\\\[-Wplacement-new" }
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99 new (&iarr[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
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100 new (&iarr[1]) A;
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101 new (&iarr[n]) A;
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102 new (&iarr[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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103 new (&iarr[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
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104 }
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105
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106 void test_array_1 (C0 *pc, CX *qc, I0 *pi, IX *qi)
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107 {
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108 enum { N = 1 };
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109
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110 new (&carr[DIFF_MIN]) A[N]; // { dg-warning "placement new constructing an object of type .A \\\[\[0-9\]+]. and size .\[0-9\]+. in a region of type .char \\\[2]. and size .0." }
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111 new (&carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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112 new (&carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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113 new (&carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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114
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115 new (&pc->carr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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116 new (&pc->carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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117 new (&pc->carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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118 new (&pc->carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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119
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120 {
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121 enum { MAX = DIFF_MAX - sizeof *pc - sizeof (A[N]) };
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122 new (&pc->carr[MAX]) A[N];
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123 new (&pc->carr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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124 }
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125
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126 new (&qc->carr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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127 new (&qc->carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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128 new (&qc->carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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129 new (&qc->carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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130
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131 {
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132 enum { MAX = DIFF_MAX - sizeof *qc - sizeof (A[N]) };
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133 new (&qc->carr[MAX]) A[N];
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134 new (&qc->carr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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135 }
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136
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137 new (&pi->iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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138 new (&pi->iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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139 new (&pi->iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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140 new (&pi->iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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141
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142 {
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143 enum { MAX = (DIFF_MAX - sizeof *pi) / sizeof *pi->iarr };
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144 new (&pi->iarr[MAX]) A[N];
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145 new (&pi->iarr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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146 }
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147
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148 new (&qi->iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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149 new (&qi->iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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150 new (&qi->iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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151 new (&qi->iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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152
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153 {
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154 enum { MAX = (DIFF_MAX - sizeof *qi) / sizeof *qi->iarr };
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155 new (&qi->iarr[MAX]) A[N];
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156 new (&qi->iarr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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157 }
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158
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159 new (&iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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160 new (&iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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161 new (&iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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162 new (&iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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163 }
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164
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165
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166 void test_array_3 (C0 *pc, CX *qc, I0 *pi, IX *qi)
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167 {
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168 enum { N = 3 };
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169
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170 new (&carr[DIFF_MIN]) A[N]; // { dg-warning "placement new constructing an object of type .A \\\[\[0-9\]+]. and size .\[0-9\]+. in a region of type .char \\\[2]. and size .0." }
84e7813d76e9 gcc-8.2
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171 new (&carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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172 new (&carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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173 new (&carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
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174
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175 new (&pc->carr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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176 new (&pc->carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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177 new (&pc->carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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178 new (&pc->carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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179
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180 {
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181 enum { MAX = DIFF_MAX - sizeof *pc - sizeof (A[N]) };
84e7813d76e9 gcc-8.2
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182 new (&pc->carr[MAX]) A[N];
84e7813d76e9 gcc-8.2
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183 new (&pc->carr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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184 }
84e7813d76e9 gcc-8.2
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185
84e7813d76e9 gcc-8.2
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186 new (&qc->carr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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187 new (&qc->carr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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188 new (&qc->carr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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189 new (&qc->carr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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190
84e7813d76e9 gcc-8.2
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191 {
84e7813d76e9 gcc-8.2
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192 enum { MAX = DIFF_MAX - sizeof *qc - sizeof (A[N]) };
84e7813d76e9 gcc-8.2
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193 new (&qc->carr[MAX]) A[N];
84e7813d76e9 gcc-8.2
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194 new (&qc->carr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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195 }
84e7813d76e9 gcc-8.2
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196
84e7813d76e9 gcc-8.2
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197 new (&pi->iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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198 new (&pi->iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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199 new (&pi->iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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200 new (&pi->iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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201
84e7813d76e9 gcc-8.2
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202 {
84e7813d76e9 gcc-8.2
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203 enum { MAX = (DIFF_MAX - sizeof *pi) / sizeof *pi->iarr };
84e7813d76e9 gcc-8.2
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204 new (&pi->iarr[MAX]) A[N];
84e7813d76e9 gcc-8.2
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205 new (&pi->iarr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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206 }
84e7813d76e9 gcc-8.2
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207
84e7813d76e9 gcc-8.2
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208 new (&qi->iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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209 new (&qi->iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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210 new (&qi->iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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211 new (&qi->iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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212
84e7813d76e9 gcc-8.2
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213 {
84e7813d76e9 gcc-8.2
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214 enum { MAX = (DIFF_MAX - sizeof *qi) / sizeof *qi->iarr };
84e7813d76e9 gcc-8.2
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215 new (&qi->iarr[MAX]) A[N];
84e7813d76e9 gcc-8.2
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216 new (&qi->iarr[MAX + 1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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217 }
84e7813d76e9 gcc-8.2
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218
84e7813d76e9 gcc-8.2
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219 new (&iarr[DIFF_MIN]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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220 new (&iarr[-1]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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221 new (&iarr[DIFF_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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222 new (&iarr[SIZE_MAX]) A[N]; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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223 }
84e7813d76e9 gcc-8.2
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224
84e7813d76e9 gcc-8.2
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225
84e7813d76e9 gcc-8.2
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226 void test_vla (unsigned n)
84e7813d76e9 gcc-8.2
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227 {
84e7813d76e9 gcc-8.2
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228 char cvla[n];
84e7813d76e9 gcc-8.2
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229
84e7813d76e9 gcc-8.2
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230 new (&cvla[DIFF_MIN]) A; // { dg-warning "placement new constructing an object of type .A. and size .1. in a region of type .char \\\[n]. and size .0." }
84e7813d76e9 gcc-8.2
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231 new (&cvla[-1]) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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232 new (cvla -1) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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233 new (&cvla[0]) A;
84e7813d76e9 gcc-8.2
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234 new (&cvla[9]) A;
84e7813d76e9 gcc-8.2
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235 new (&cvla[n - 1]) A;
84e7813d76e9 gcc-8.2
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236 new (cvla + n - 1) A;
84e7813d76e9 gcc-8.2
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237 new (&cvla[DIFF_MAX - 1]) A;
84e7813d76e9 gcc-8.2
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238 new (&cvla[DIFF_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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239 new (cvla + DIFF_MAX) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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240 new (&cvla[SIZE_MAX]) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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241 new (cvla + SIZE_MAX) A; // { dg-warning "\\\[-Wplacement-new" }
84e7813d76e9 gcc-8.2
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242 }