forked from OSchip/llvm-project
59 lines
1.6 KiB
Fortran
59 lines
1.6 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Interfaces are allowed to extend intrinsic procedures, with limitations
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module m1
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intrinsic sin
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interface sin
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module procedure :: charcpy
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end interface
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interface cos ! no INTRINSIC statement
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module procedure :: charcpy
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end interface
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intrinsic mvbits
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interface mvbits
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module procedure :: negate
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end interface
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interface move_alloc ! no INTRINSIC statement
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module procedure :: negate
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end interface
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interface tan ! not explicitly INTRINSIC
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module procedure :: negate ! a subroutine
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end interface
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interface acos
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module procedure :: minus ! override
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end interface
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intrinsic atan
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!ERROR: Generic interface 'atan' with explicit intrinsic function of the same name may not have specific procedure 'negate' that is a subroutine
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interface atan
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module procedure :: negate ! a subroutine
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end interface
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contains
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character function charcpy(x)
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character, intent(in) :: x
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charcpy = x
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end function
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subroutine negate(x)
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real, intent(in out) :: x
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x = -x
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end subroutine
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real elemental function minus(x)
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real, intent(in) :: x
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minus = -x
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end function
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subroutine test
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integer, allocatable :: j, k
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real :: x
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character :: str
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x = sin(x)
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str = sin(str) ! charcpy
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x = cos(x)
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str = cos(str) ! charcpy
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call mvbits(j,0,1,k,0)
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call mvbits(x) ! negate
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call move_alloc(j, k)
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call move_alloc(x) ! negate
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!ERROR: Cannot call subroutine 'tan' like a function
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x = tan(x)
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x = acos(x) ! user's interface overrides intrinsic
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end subroutine
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end module
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