[Bug fortran/114019] New: allocation with source of deferred character length entity

["kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114019

            Bug ID: 114019
           Summary: allocation with source of deferred character length
                    entity
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kargl at gcc dot gnu.org
  Target Milestone: ---

Found this issues with the Fujitsu testsuite.  The code 
is reduced to the minimum required.  If I had to guess,
gfc_charlen for source= is not set correctly.

!
! https://github.com/fujitsu/compiler-test-suite
! Reduced from Fortran/0069/0069_0037.f90
!
  implicit none
  character(:), pointer :: chr_pointer00
  character(5), pointer :: chr_pointer01
  character(1) :: w_character01 = "4"
  allocate(chr_pointer00, source="123"//w_character01//"56")
  allocate(chr_pointer01, source="123"//w_character01//"5")
  print *,'pass'
end

% gfcx -c 0069/0069_0037.f90
0069/0069_0037.f90:9:60:

    9 |   allocate(chr_pointer00, source="123"//w_character01//"56")
      |                                                            ^
Error: size of variable 'source.2' is too large
0069/0069_0037.f90:10:59:

   10 |   allocate(chr_pointer01, source="123"//w_character01//"5")
      |                                                           ^
Error: size of variable 'source.5' is too large
during RTL pass: expand
0069/0069_0037.f90:9:60:

    9 |   allocate(chr_pointer00, source="123"//w_character01//"56")
      |                                                            ^
internal compiler error: in lhd_incomplete_type_error, at langhooks.cc:208
0x77ff6f lhd_incomplete_type_error(unsigned int, tree_node const*, tree_node
const
        ../../gccx/gcc/langhooks.cc:208
0x13c00aa size_in_bytes_loc(unsigned int, tree_node const*)
        ../../gccx/gcc/tree.cc:3601
0x13c00aa size_in_bytes_loc(unsigned int, tree_node const*)
        ../../gccx/gcc/tree.cc:3589