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111
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1 /* PR c/80116 */
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2 /* { dg-options "-Wmultistatement-macros" } */
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3 /* { dg-do compile } */
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4
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5 #define SWAP(X, Y) \
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6 tmp = X; /* { dg-warning "macro expands to multiple statements" } */ \
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7 X = Y; \
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8 Y = tmp
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9
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10 #define STUFF \
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11 if (0) {} else x = y
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12
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13 #define STUFF2 \
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14 if (0) {} else x = y; x++
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15
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16 #define STUFF3 \
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17 if (x) \
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18 {} \
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19 else /* { dg-message "not guarded by this 'else' clause" } */ \
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20 SWAP(x, y) /* { dg-message "in expansion of macro .SWAP." } */
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21
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22 #define SET(X, Y) \
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23 (X) = (Y)
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24
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25 #define STUFF4 \
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26 if (x) \
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27 {} \
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28 else \
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29 SET(x, y); \
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30 SET(x, y)
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31
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32 #define STUFF5 \
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33 { tmp = x; x = y; }
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34
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35 #define STUFF6 \
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36 x++;;
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37
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38 int x, y, tmp;
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39
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40 void
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41 fn1 (void)
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42 {
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43 if (x)
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44 {
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45 }
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46 else /* { dg-message "not guarded by this 'else' clause" } */
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47 SWAP(x, y); /* { dg-message "in expansion of macro .SWAP." } */
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48 }
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49
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50 void
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51 fn2 (void)
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52 {
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53 SWAP(x, y);
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54 }
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55
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56 void
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57 fn3 (void)
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58 {
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59 if (x)
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60 {
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61 }
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62 else
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63 {
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64 SWAP(x, y);
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65 }
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66 }
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67
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68 void
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69 fn4 (void)
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70 {
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71 if (x)
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72 {
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73 }
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74 else
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75 ({ x = 10; x++; });
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76 }
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77
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78 void
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79 fn5 (void)
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80 {
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81 if (x)
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82 {
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83 }
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84 else /* { dg-message "not guarded by this 'else' clause" } */
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85 L1:
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86 SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
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87 goto L1;
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88 }
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89
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90 void
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91 fn6 (void)
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92 {
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93 if (x)
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94 {
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95 }
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96 else
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97 SET (x, y);
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98 SET (tmp, x);
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99 }
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100
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101 void
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102 fn7 (void)
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103 {
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104 STUFF;
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105 }
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106
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107 void
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108 fn8 (void)
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109 {
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110 STUFF2;
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111 }
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112
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113 void
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114 fn9 (void)
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115 {
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116 STUFF3; /* { dg-message "in expansion of macro .STUFF3." } */
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117 }
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118
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119 void
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120 fn10 (void)
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121 {
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122 STUFF4;
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123 }
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124
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125 void
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126 fn11 (void)
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127 {
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128 if (x)
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129 STUFF5;
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130 }
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131
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132 void
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133 fn12 (void)
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134 {
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135 if (x)
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136 STUFF6;
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137 }
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