derek.holloway
7502bf64a4
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49 lines
1.8 KiB
Fortran
49 lines
1.8 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! 15.4.2.2. Test that errors are reported when an explicit interface
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! is not provided for an external procedure that requires an explicit
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! interface (the definition needs to be visible so that the compiler
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! can detect the violation).
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subroutine foo(a_pointer)
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real, pointer :: a_pointer(:)
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end subroutine
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subroutine bar(a_pointer)
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procedure(real), pointer :: a_pointer
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end subroutine
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subroutine baz(proc)
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external :: proc
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real, optional :: proc
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end subroutine
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subroutine test()
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real, pointer :: a_pointer(:)
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real, pointer :: an_array(:)
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intrinsic :: sin
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! This call would be allowed if the interface was explicit here,
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! but its handling with an implicit interface is different (no
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! descriptor involved, copy-in/copy-out...)
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!ERROR: References to the procedure 'foo' require an explicit interface
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!BECAUSE: a dummy argument has the allocatable, asynchronous, optional, pointer, target, value, or volatile attribute
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call foo(a_pointer)
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! This call would be error if the interface was explicit here.
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!ERROR: References to the procedure 'foo' require an explicit interface
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!BECAUSE: a dummy argument has the allocatable, asynchronous, optional, pointer, target, value, or volatile attribute
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call foo(an_array)
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!ERROR: References to the procedure 'bar' require an explicit interface
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!BECAUSE: a dummy procedure is optional or a pointer
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!WARNING: If the procedure's interface were explicit, this reference would be in error [-Wknown-bad-implicit-interface]
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!BECAUSE: Actual argument associated with procedure pointer dummy argument 'a_pointer=' is not a procedure pointer
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call bar(sin)
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!ERROR: References to the procedure 'baz' require an explicit interface
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!BECAUSE: a dummy procedure is optional or a pointer
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call baz(sin)
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end subroutine
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