peter klausler 43a263f570 [flang] Implement semantic checks for ELEMENTAL subprograms
Adds missing semantic checks for ELEMENTAL functions and subroutines,
their dummy arguments, and their results from F'2018 15.8.1 C15100-15102.

Differential Revision: https://reviews.llvm.org/D109380
2021-09-07 14:37:23 -07:00

60 lines
1.9 KiB
Fortran

! RUN: %python %S/test_errors.py %s %flang_fc1
module m
! For C1543
interface intFace
!WARNING: Attribute 'MODULE' cannot be used more than once
module pure module real function moduleFunc()
end function moduleFunc
end interface
contains
! C1543 A prefix shall contain at most one of each prefix-spec.
!
! R1535 subroutine-stmt is
! [prefix] SUBROUTINE subroutine-name [ ( [dummy-arg-list] )
! [proc-language-binding-spec] ]
!
! R1526 prefix is
! prefix-spec[prefix-spec]...
!
! prefix-spec values are:
! declaration-type-spec, ELEMENTAL, IMPURE, MODULE, NON_RECURSIVE,
! PURE, RECURSIVE
!ERROR: FUNCTION prefix cannot specify the type more than once
real pure real function realFunc()
end function realFunc
!WARNING: Attribute 'ELEMENTAL' cannot be used more than once
elemental real elemental function elementalFunc(x)
real, value :: x
elementalFunc = x
end function elementalFunc
!WARNING: Attribute 'IMPURE' cannot be used more than once
impure real impure function impureFunc()
end function impureFunc
!WARNING: Attribute 'PURE' cannot be used more than once
pure real pure function pureFunc()
end function pureFunc
!ERROR: Attributes 'PURE' and 'IMPURE' conflict with each other
impure real pure function impurePureFunc()
end function impurePureFunc
!WARNING: Attribute 'RECURSIVE' cannot be used more than once
recursive real recursive function recursiveFunc()
end function recursiveFunc
!WARNING: Attribute 'NON_RECURSIVE' cannot be used more than once
non_recursive real non_recursive function non_recursiveFunc()
end function non_recursiveFunc
!ERROR: Attributes 'RECURSIVE' and 'NON_RECURSIVE' conflict with each other
non_recursive real recursive function non_recursiveRecursiveFunc()
end function non_recursiveRecursiveFunc
end module m