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annotate gcc/testsuite/c-c++-common/Wswitch-unreachable-1.c @ 144:8f4e72ab4e11

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fix segmentation fault caused by nothing next cur_op to end
author Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Sun, 23 Dec 2018 21:23:56 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 /* PR c/49859 */
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2 /* { dg-do compile } */
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3
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4 extern void foo (int);
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5 extern int j;
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6
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7 void
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8 fn0 (int i)
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9 {
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10 switch (i)
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11 {
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12 int k;
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13 case 1:
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14 k = 11;
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15 foo (k);
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16 }
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17
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18 switch (i)
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19 j = 10; /* { dg-warning "statement will never be executed" } */
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20
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21 switch (i)
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22 ;
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23
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24 switch (i)
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25 {
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26 j = 12; /* { dg-warning "statement will never be executed" } */
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27 default:
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28 foo (j);
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29 }
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30
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31 int o;
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32 switch (i)
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33 {
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34 o = 333; /* { dg-warning "statement will never be executed" } */
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35 case 4: break;
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36 default:
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37 foo (o);
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38 }
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39
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40 switch (i)
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41 switch (j) /* { dg-warning "statement will never be executed" } */
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42 {
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43 o = 42; /* { dg-warning "statement will never be executed" } */
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44 case 8:;
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45 }
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46
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47 switch (i)
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48 {
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49 int l = 3; /* { dg-warning "statement will never be executed" } */
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50 o = 5;
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51 j = 7;
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52 ++l;
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53 }
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54
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55 switch (i)
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56 {
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57 int x;
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58 int l = 3; /* { dg-warning "statement will never be executed" } */
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59 ++l, ++x;
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60 }
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61
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62 switch (i)
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63 if (j != 3) /* { dg-warning "statement will never be executed" } */
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64 foo (j);
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65
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66 switch (i)
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67 while (1)
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68 foo (0);
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69
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70 switch (i)
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71 while (i > 5) { }
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72
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73 switch (i)
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74 goto X; /* { dg-warning "statement will never be executed" } */
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75 X:
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76
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77 switch (i)
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78 do
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79 foo (1);
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80 while (1);
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81
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82 switch (i)
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83 for (;;)
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84 foo (-1);
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85
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86 switch (i)
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87 default:
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88 j = 6;
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89
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90 switch (i)
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91 {
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92 typedef int T;
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93 case 3:
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94 {
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95 T x = 5;
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96 foo (x);
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97 }
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98 }
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99
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100 switch (i)
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101 {
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102 static int g;
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103 default:
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104 foo (g);
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105 }
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106
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107 switch (i)
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108 {
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109 L:
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110 j = 16;
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111 default:
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112 if (j < 5)
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113 goto L;
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114 break;
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115 }
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116 }