xref: /llvm-project/flang/test/Semantics/resolve77.f90 (revision 26ac30bcec71ae97ba740fb6cf473eac3ac37887)
1! RUN: %python %S/test_errors.py %s %flang_fc1 -pedantic
2! Tests valid and invalid usage of forward references to procedures
3! in specification expressions.
4module m
5  interface ifn2
6    module procedure if2
7  end interface
8  interface ifn3
9    module procedure if3
10  end interface
11  !ERROR: Automatic data object 'a' may not appear in a module
12  real :: a(if1(1))
13  !ERROR: Automatic data object 'b' may not appear in a module
14  real :: b(ifn2(1))
15  !ERROR: Automatic data object 'c' may not appear in COMMON block /blk/
16  real :: c(if1(1))
17  !ERROR: Automatic data object 'd' may not appear in COMMON block //
18  real :: d(ifn2(1))
19  common /blk/c
20  common d
21 contains
22  subroutine t1(n)
23    integer :: iarr(if1(n))
24  end subroutine
25  pure integer function if1(n)
26    integer, intent(in) :: n
27    if1 = n
28  end function
29  subroutine t2(n)
30    integer :: iarr(ifn3(n)) ! should resolve to if3
31  end subroutine
32  pure integer function if2(n)
33    integer, intent(in) :: n
34    if2 = n
35  end function
36  pure integer function if3(n)
37    integer, intent(in) :: n
38    if3 = n
39  end function
40end module
41
42subroutine nester
43  !ERROR: The internal function 'if1' may not be referenced in a specification expression
44  real :: a(if1(1))
45 contains
46  subroutine t1(n)
47    !ERROR: The internal function 'if2' may not be referenced in a specification expression
48    integer :: iarr(if2(n))
49  end subroutine
50  pure integer function if1(n)
51    integer, intent(in) :: n
52    if1 = n
53  end function
54  pure integer function if2(n)
55    integer, intent(in) :: n
56    if2 = n
57  end function
58end subroutine
59
60block data
61  common /blk2/ n
62  data n/100/
63  !PORTABILITY: specification expression refers to local object 'n' (initialized and saved)
64  !ERROR: Automatic data object 'a' may not appear in a BLOCK DATA subprogram
65  real a(n)
66end
67
68program main
69  common /blk2/ n
70  !PORTABILITY: Automatic data object 'a' should not appear in the specification part of a main program
71  real a(n)
72end
73