8b930895c4
As a common language extension, this compiler accepts a structure constructor whose first value has no keyword and whose type matches an ancestral type as if the constructor had had a keyword whose name was the ancestral type. For example, given TYPE PARENT; REAL X; END TYPE TYPE, EXTENDS(PARENT) :: CHILD; END TYPE we accept the nonconforming constructor "child(parent(1.))" as if it had been the conforming "child(1.)" or "child(parent=parent(1.))". The detection of this case needs to be constrained a bit to avoid a false positive misinterpretation of conforming code in the case where the actual first component of the derived type is a POINTER or ALLOCATABLE whose type and rank would allow it to correspond with the keywordless first value in the component value list. Fixes https://github.com/llvm/llvm-project/issues/161887.
90 lines
1.7 KiB
Fortran
90 lines
1.7 KiB
Fortran
!RUN: %flang_fc1 -fdebug-unparse %s | FileCheck %s
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program test
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type t1p
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type(t1p), pointer :: arr(:)
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end type
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type, extends(t1p) :: t1c
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end type
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type t2p
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type(t2p), pointer :: scalar
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end type
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type, extends(t2p) :: t2c
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end type
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type t3p
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type(t3p), allocatable :: arr(:)
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end type
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type, extends(t3p) :: t3c
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end type
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type t4p
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type(t4p), allocatable :: scalar
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end type
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type, extends(t4p) :: t4c
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end type
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type t5p
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class(*), pointer :: arr(:)
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end type
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type, extends(t5p) :: t5c
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end type
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type t6p
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class(*), pointer :: scalar
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end type
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type, extends(t6p) :: t6c
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end type
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type t7p
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class(*), allocatable :: arr(:)
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end type
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type, extends(t7p) :: t7c
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end type
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type t8p
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class(*), allocatable :: scalar
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end type
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type, extends(t8p) :: t8c
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end type
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type(t1p), target :: t1pt(1)
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type(t1p), pointer :: t1pp(:)
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type(t2p), target :: t2pt
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type(t2p), pointer :: t2pp
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type(t3p) t3pa(1)
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type(t4p) t4ps
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type(t1c) x1
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type(t2c) x2
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type(t3c) x3
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type(t4c) x4
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type(t5c) x5
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type(t6c) x6
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type(t7c) x7
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type(t8c) x8
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!CHECK: x1=t1c(arr=t1pt)
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x1 = t1c(t1pt)
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!CHECK: x1=t1c(arr=t1pp)
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x1 = t1c(t1pp)
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!CHECK: x2=t2c(scalar=t2pt)
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x2 = t2c(t2pt)
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!CHECK: x2=t2c(scalar=t2pp)
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x2 = t2c(t2pp)
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!CHECK: x3=t3c(arr=t3pa)
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x3 = t3c(t3pa)
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!CHECK: x4=t4c(scalar=t4ps)
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x4 = t4c(t4ps)
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!CHECK: x4=t4c(scalar=t4p(scalar=NULL()))
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x4 = t4c(t4p())
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!CHECK: x5=t5c(arr=t1pt)
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x5 = t5c(t1pt)
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!CHECK: x5=t5c(arr=t1pp)
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x5 = t5c(t1pp)
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!CHECK: x6=t6c(scalar=t2pt)
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x6 = t6c(t2pt)
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!CHECK: x6=t6c(scalar=t2pp)
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x6 = t6c(t2pp)
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!CHECK: x7=t7c(arr=t3pa)
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x7 = t7c(t3pa)
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!CHECK: x8=t8c(scalar=t4ps)
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x8 = t8c(t4ps)
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!CHECK: x8=t8c(scalar=t4p(scalar=NULL()))
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x8 = t8c(t4p())
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end
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