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173
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1 ! RUN: %S/test_errors.sh %s %t %f18
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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: 'f1' is not a function
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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: 'f2' is not an array
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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 function f6() result(f6) !OKI (warning)
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63 end function
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64 function f7() result(f7) !OKI (warning)
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65 real :: x, f7
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66 !ERROR: 'f7' is not a function
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67 x = acos(f7())
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68 f7 = x
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69 x = acos(f7) !OK
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70 end function
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71 end module
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72
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73 module m_with_result
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74 ! With RESULT, it refers to the function (recursive calls possible)
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75 contains
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76
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77 ! testing with data object results
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78 function f1() result(r)
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79 real :: r
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80 r = acos(f1()) !OK, recursive call
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81 !ERROR: Actual argument for 'x=' may not be a procedure
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82 x = acos(f1)
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83 end function
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84 function f2(i) result(r)
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85 integer i
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86 real :: r
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87 r = acos(f2(i+1)) ! OK, recursive call
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88 !ERROR: Actual argument for 'x=' may not be a procedure
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89 r = acos(f2)
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90 end function
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91 function f3(i) result(r)
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92 integer i
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93 real :: r(1)
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94 r = acos(f3(i+1)) !OK recursive call
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95 !ERROR: Actual argument for 'x=' may not be a procedure
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96 r = sum(acos(f3))
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97 end function
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98
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99 ! testing with function pointer results
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100 function rf()
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101 real :: rf
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102 end function
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103 function f4() result(r)
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104 real :: x
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105 procedure(rf), pointer :: r
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106 r => rf
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107 !ERROR: Actual argument for 'x=' may not be a procedure
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108 x = acos(f4()) ! recursive call
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109 !ERROR: Actual argument for 'x=' may not be a procedure
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110 x = acos(f4)
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111 x = acos(r()) ! OK
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112 end function
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113 function f5(x) result(r)
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114 real :: x
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115 procedure(acos), pointer :: r
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116 r => acos
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117 !ERROR: Actual argument for 'x=' may not be a procedure
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118 x = acos(f5(x+1)) ! recursive call
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119 !ERROR: Actual argument for 'x=' may not be a procedure
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120 x = acos(f5)
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121 x = acos(r(x+1)) ! OK
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122 end function
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123
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124 ! testing that calling the result is also caught
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125 function f6() result(r)
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126 real :: x, r
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127 !ERROR: 'r' is not a function
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128 x = r()
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129 end function
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130 end module
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131
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132 subroutine array_rank_test()
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133 real :: x(10, 10), y
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134 !ERROR: Reference to rank-2 object 'x' has 1 subscripts
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135 y = x(1)
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136 !ERROR: Reference to rank-2 object 'x' has 3 subscripts
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137 y = x(1, 2, 3)
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138 end
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