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Before emitting a warning message, code should check that the usage in question should be diagnosed by calling ShouldWarn(). A fair number of sites in the code do not, and can emit portability warnings unconditionally, which can confuse a user that hasn't asked for them (-pedantic) and isn't terribly concerned about portability *to* other compilers. Add calls to ShouldWarn() or IsEnabled() around messages that need them, and add -pedantic to tests that now require it to test their portability messages, and add more expected message lines to those tests when -pedantic causes other diagnostics to fire.
142 lines
3.9 KiB
Fortran
142 lines
3.9 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1 -pedantic
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! Testing 15.6.2.2 point 4 (What function-name refers to depending on the
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! presence of RESULT).
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module m_no_result
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! Without RESULT, it refers to the result object (no recursive
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! calls possible)
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contains
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! testing with data object results
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function f1()
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real :: x, f1
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!ERROR: Recursive call to 'f1' requires a distinct RESULT in its declaration
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x = acos(f1())
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f1 = x
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x = acos(f1) !OK
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end function
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function f2(i)
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integer i
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real :: x, f2
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!ERROR: Recursive call to 'f2' requires a distinct RESULT in its declaration
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x = acos(f2(i+1))
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f2 = x
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x = acos(f2) !OK
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end function
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function f3(i)
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integer i
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real :: x, f3(1)
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! OK reference to array result f1
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x = acos(f3(i+1))
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f3 = x
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x = sum(acos(f3)) !OK
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end function
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! testing with function pointer results
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function rf()
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real :: rf
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end function
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function f4()
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procedure(rf), pointer :: f4
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f4 => rf
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! OK call to f4 pointer (rf)
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x = acos(f4())
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f4)
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end function
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function f5(x)
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real :: x
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interface
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real function rfunc(x)
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real, intent(in) :: x
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end function
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end interface
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procedure(rfunc), pointer :: f5
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f5 => rfunc
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! OK call to f5 pointer
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x = acos(f5(x+1))
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f5)
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end function
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! Sanity test: f18 handles C1560 violation by ignoring RESULT
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!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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function f6() result(f6)
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end function
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!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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function f7() result(f7)
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real :: x, f7
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!ERROR: Recursive call to 'f7' requires a distinct RESULT in its declaration
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x = acos(f7())
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f7 = x
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x = acos(f7) !OK
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end function
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end module
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module m_with_result
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! With RESULT, it refers to the function (recursive calls possible)
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contains
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! testing with data object results
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function f1() result(r)
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real :: r
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r = acos(f1()) !OK, recursive call
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f1)
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end function
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function f2(i) result(r)
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integer i
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real :: r
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r = acos(f2(i+1)) ! OK, recursive call
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!ERROR: Actual argument for 'x=' may not be a procedure
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r = acos(f2)
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end function
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function f3(i) result(r)
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integer i
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real :: r(1)
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r = acos(f3(i+1)) !OK recursive call
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!ERROR: Actual argument for 'x=' may not be a procedure
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r = sum(acos(f3))
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end function
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! testing with function pointer results
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function rf()
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real :: rf
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end function
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function f4() result(r)
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real :: x
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procedure(rf), pointer :: r
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r => rf
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f4()) ! recursive call
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f4)
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x = acos(r()) ! OK
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end function
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function f5(x) result(r)
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real :: x
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!PORTABILITY: Procedure pointer 'r' should not have an ELEMENTAL intrinsic as its interface
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procedure(acos), pointer :: r
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r => acos
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f5(x+1)) ! recursive call
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!ERROR: Actual argument for 'x=' may not be a procedure
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x = acos(f5)
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x = acos(r(x+1)) ! OK
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end function
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! testing that calling the result is also caught
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function f6() result(r)
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real :: x, r
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!ERROR: 'r' is not a callable procedure
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x = r()
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end function
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end module
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subroutine array_rank_test()
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real :: x(10, 10), y
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!ERROR: Reference to rank-2 object 'x' has 1 subscripts
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y = x(1)
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!ERROR: Reference to rank-2 object 'x' has 3 subscripts
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y = x(1, 2, 3)
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end
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