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1 ! RUN: %python %S/test_errors.py %s %flang_fc1
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2 ! Testing 15.6.2.2 point 4 (What function-name refers to depending on the
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3 ! presence of RESULT).
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4
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5
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6 module m_no_result
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7 ! Without RESULT, it refers to the result object (no recursive
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8 ! calls possible)
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9 contains
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10 ! testing with data object results
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11 function f1()
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12 real :: x, f1
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13 !ERROR: Recursive call to 'f1' requires a distinct RESULT in its declaration
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14 x = acos(f1())
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15 f1 = x
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16 x = acos(f1) !OK
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17 end function
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18 function f2(i)
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19 integer i
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20 real :: x, f2
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21 !ERROR: Recursive call to 'f2' requires a distinct RESULT in its declaration
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22 x = acos(f2(i+1))
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23 f2 = x
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24 x = acos(f2) !OK
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25 end function
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26 function f3(i)
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27 integer i
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28 real :: x, f3(1)
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29 ! OK reference to array result f1
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30 x = acos(f3(i+1))
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31 f3 = x
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32 x = sum(acos(f3)) !OK
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33 end function
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34
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35 ! testing with function pointer results
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36 function rf()
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37 real :: rf
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38 end function
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39 function f4()
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40 procedure(rf), pointer :: f4
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41 f4 => rf
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42 ! OK call to f4 pointer (rf)
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43 x = acos(f4())
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44 !ERROR: Actual argument for 'x=' may not be a procedure
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45 x = acos(f4)
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46 end function
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47 function f5(x)
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48 real :: x
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49 interface
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50 real function rfunc(x)
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51 real, intent(in) :: x
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52 end function
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53 end interface
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54 procedure(rfunc), pointer :: f5
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55 f5 => rfunc
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56 ! OK call to f5 pointer
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57 x = acos(f5(x+1))
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58 !ERROR: Actual argument for 'x=' may not be a procedure
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59 x = acos(f5)
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60 end function
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61 ! Sanity test: f18 handles C1560 violation by ignoring RESULT
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62 !WARNING: The function name should not appear in RESULT, references to 'f6' inside the function will be considered as references to the result only
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63 function f6() result(f6)
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64 end function
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65 !WARNING: The function name should not appear in RESULT, references to 'f7' inside the function will be considered as references to the result only
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66 function f7() result(f7)
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67 real :: x, f7
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68 !ERROR: Recursive call to 'f7' requires a distinct RESULT in its declaration
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69 x = acos(f7())
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70 f7 = x
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71 x = acos(f7) !OK
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72 end function
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73 end module
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74
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75 module m_with_result
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76 ! With RESULT, it refers to the function (recursive calls possible)
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77 contains
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78
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79 ! testing with data object results
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80 function f1() result(r)
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81 real :: r
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82 r = acos(f1()) !OK, recursive call
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83 !ERROR: Actual argument for 'x=' may not be a procedure
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84 x = acos(f1)
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85 end function
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86 function f2(i) result(r)
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87 integer i
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88 real :: r
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89 r = acos(f2(i+1)) ! OK, recursive call
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90 !ERROR: Actual argument for 'x=' may not be a procedure
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91 r = acos(f2)
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92 end function
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93 function f3(i) result(r)
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94 integer i
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95 real :: r(1)
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96 r = acos(f3(i+1)) !OK recursive call
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97 !ERROR: Actual argument for 'x=' may not be a procedure
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98 r = sum(acos(f3))
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99 end function
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100
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101 ! testing with function pointer results
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102 function rf()
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103 real :: rf
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104 end function
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105 function f4() result(r)
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106 real :: x
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107 procedure(rf), pointer :: r
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108 r => rf
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109 !ERROR: Actual argument for 'x=' may not be a procedure
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110 x = acos(f4()) ! recursive call
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111 !ERROR: Actual argument for 'x=' may not be a procedure
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112 x = acos(f4)
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113 x = acos(r()) ! OK
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114 end function
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115 function f5(x) result(r)
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116 real :: x
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117 procedure(acos), pointer :: r
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118 r => acos
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119 !ERROR: Actual argument for 'x=' may not be a procedure
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120 x = acos(f5(x+1)) ! recursive call
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121 !ERROR: Actual argument for 'x=' may not be a procedure
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122 x = acos(f5)
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123 x = acos(r(x+1)) ! OK
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124 end function
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125
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126 ! testing that calling the result is also caught
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127 function f6() result(r)
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128 real :: x, r
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129 !ERROR: 'r' is not a callable procedure
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130 x = r()
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131 end function
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132 end module
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133
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134 subroutine array_rank_test()
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135 real :: x(10, 10), y
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136 !ERROR: Reference to rank-2 object 'x' has 1 subscripts
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137 y = x(1)
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138 !ERROR: Reference to rank-2 object 'x' has 3 subscripts
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139 y = x(1, 2, 3)
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140 end
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