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When a procedure is defined with a subprogram but never referenced in a compilation unit, it may not be characterized until lowering, and any errors in characterization then may crash the compiler. So always ensure that procedure definitions are characterizable in declaration checking. Fixes https://github.com/llvm/llvm-project/issues/91845.
109 lines
3.1 KiB
Fortran
109 lines
3.1 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Tests for circularly defined procedures
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!ERROR: Procedure 'sub' is recursively defined. Procedures in the cycle: 'sub', 'p2'
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subroutine sub(p2)
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PROCEDURE(sub) :: p2
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end subroutine
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subroutine circular
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procedure(sub) :: p
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contains
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!ERROR: Procedure 'sub' is recursively defined. Procedures in the cycle: 'p', 'sub', 'p2'
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subroutine sub(p2)
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procedure(p) :: p2
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end subroutine
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end subroutine circular
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!ERROR: Procedure 'foo' is recursively defined. Procedures in the cycle: 'foo', 'r'
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function foo() result(r)
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!ERROR: Procedure 'r' is recursively defined. Procedures in the cycle: 'foo', 'r'
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procedure(foo), pointer :: r
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end function foo
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subroutine iface
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!ERROR: Procedure 'p' is recursively defined. Procedures in the cycle: 'p', 'sub', 'p2'
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procedure(sub) :: p
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interface
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!ERROR: Procedure 'sub' is recursively defined. Procedures in the cycle: 'p', 'sub', 'p2'
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subroutine sub(p2)
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import p
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procedure(p) :: p2
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end subroutine
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end interface
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call p(sub)
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end subroutine
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subroutine mutual
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Procedure(sub1) :: p
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contains
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!ERROR: Procedure 'sub1' is recursively defined. Procedures in the cycle: 'p', 'sub1', 'arg'
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!ERROR: Procedure 'sub1' is recursively defined. Procedures in the cycle: 'sub1', 'arg', 'sub', 'p2'
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!ERROR: Procedure 'sub1' is recursively defined. Procedures in the cycle: 'sub1', 'arg'
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Subroutine sub1(arg)
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procedure(sub1) :: arg
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End Subroutine
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Subroutine sub(p2)
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Procedure(sub1) :: p2
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End Subroutine
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End subroutine
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subroutine mutual1
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Procedure(sub1) :: p
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contains
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!ERROR: Procedure 'sub1' is recursively defined. Procedures in the cycle: 'p', 'sub1', 'arg', 'sub', 'p2'
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!ERROR: Procedure 'sub1' is recursively defined. Procedures in the cycle: 'sub1', 'arg', 'sub', 'p2'
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Subroutine sub1(arg)
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procedure(sub) :: arg
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End Subroutine
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!ERROR: Procedure 'sub' is recursively defined. Procedures in the cycle: 'sub1', 'arg', 'sub', 'p2'
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Subroutine sub(p2)
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Procedure(sub1) :: p2
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End Subroutine
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End subroutine
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subroutine twoCycle
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!ERROR: The interface for procedure 'p1' is recursively defined
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!ERROR: The interface for procedure 'p2' is recursively defined
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procedure(p1) p2
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procedure(p2) p1
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end subroutine
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subroutine threeCycle
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!ERROR: The interface for procedure 'p1' is recursively defined
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!ERROR: The interface for procedure 'p2' is recursively defined
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procedure(p1) p2
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!ERROR: The interface for procedure 'p3' is recursively defined
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procedure(p2) p3
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procedure(p3) p1
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end subroutine
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module mutualSpecExprs
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contains
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pure integer function f(n)
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integer, intent(in) :: n
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real arr(g(n))
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f = size(arr)
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end function
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pure integer function g(n)
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integer, intent(in) :: n
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!ERROR: Procedure 'f' is referenced before being sufficiently defined in a context where it must be so
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real arr(f(n))
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g = size(arr)
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end function
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end
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module genericInSpec
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interface int
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procedure ifunc
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end interface
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contains
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function ifunc(x)
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integer a(int(kind(1))) ! generic is ok with most compilers
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integer(size(a)), intent(in) :: x
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ifunc = x
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end
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end
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