[Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable scalar component(s)

[gerhard.steinmetz.fort...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68225

--- Comment #5 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> 
---
$ cat yy0.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type(t) :: x
   x = t()
   print *, allocated(x%a), x%a
end

$ gfortran -g -O0 -Wall -fcheck=all  yy0.f90
$ a.out
 F

---

$ cat yy1.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type(t) :: x
   x = t([1, 2])
   print *, allocated(x%a), x%a
end

$ gfortran -g -O0 -Wall -fcheck=all  yy1.f90
$ a.out
 T           1           2

---

$ cat zz0.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type, extends(t) :: t2
      integer, allocatable :: b(:)
   end type
   type(t2) :: x
   x = t2()
   print *, allocated(x%a), x%a
   print *, allocated(x%b), x%b
end

$ gfortran -g -O0 -Wall -fcheck=all  zz0.f90
$ a.out
 F
 F

---

$ cat zz1.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type, extends(t) :: t2
      integer, allocatable :: b(:)
   end type
   type(t2) :: x
   x = t2([1])
   print *, allocated(x%a), x%a
   print *, allocated(x%b), x%b
end

$ gfortran -g -O0 -Wall -fcheck=all  zz1.f90
$ a.out
 T           1
 F

---

$ cat zz2.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type, extends(t) :: t2
      integer, allocatable :: b(:)
   end type
   type(t2) :: x
   x = t2(null(), [1, 2])
   print *, allocated(x%a), x%a
   print *, allocated(x%b), x%b
end

$ gfortran -g -O0 -Wall -fcheck=all  zz2.f90
$ a.out
 F
 T           1           2