forked from Imagelibrary/binutils-gdb
f18fc7e56f
This commit allows pointers to be dynamic types (on the outmost
level). Similar to references, a pointer is considered a dynamic type
if its target type is a dynamic type and it is on the outmost level.
Also this commit removes the redundant code inside function
"value_check_printable" for handling of DW_AT_associated type.
The pointer resolution follows the one of references.
This change generally makes the GDB output more verbose. We are able to
print more details about a pointer's target like the dimension of an array.
In Fortran, if we have a pointer to a dynamic type
type buffer
real, dimension(:), pointer :: ptr
end type buffer
type(buffer), pointer :: buffer_ptr
allocate (buffer_ptr)
allocate (buffer_ptr%ptr (5))
which then gets allocated, we now resolve the dynamic type before
printing the pointer's type:
Before:
(gdb) ptype buffer_ptr
type = PTR TO -> ( Type buffer
real(kind=4) :: alpha(:)
End Type buffer )
After:
(gdb) ptype buffer_ptr
type = PTR TO -> ( Type buffer
real(kind=4) :: alpha(5)
End Type buffer )
Similarly in C++ we can dynamically resolve e.g. pointers to arrays:
int len = 3;
int arr[len];
int (*ptr)[len];
int ptr = &arr;
Once the pointer is assigned one gets:
Before:
(gdb) p ptr
$1 = (int (*)[variable length]) 0x123456
(gdb) ptype ptr
type = int (*)[variable length]
After:
(gdb) p ptr
$1 = (int (*)[3]) 0x123456
(gdb) ptype ptr
type = int (*)[3]
For more examples see the modified/added test cases.
Tested-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
Approved-By: Tom Tromey <tom@tromey.com>
110 lines
2.7 KiB
Fortran
110 lines
2.7 KiB
Fortran
! Copyright 2019-2024 Free Software Foundation, Inc.
|
|
!
|
|
! This program is free software; you can redistribute it and/or modify
|
|
! it under the terms of the GNU General Public License as published by
|
|
! the Free Software Foundation; either version 3 of the License, or
|
|
! (at your option) any later version.
|
|
!
|
|
! This program is distributed in the hope that it will be useful,
|
|
! but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
! GNU General Public License for more details.
|
|
!
|
|
! You should have received a copy of the GNU General Public License
|
|
! along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
program pointers
|
|
|
|
type :: two
|
|
integer, allocatable :: ivla1 (:)
|
|
integer, allocatable :: ivla2 (:, :)
|
|
end type two
|
|
|
|
type :: typeWithPointer
|
|
integer i
|
|
type(typeWithPointer), pointer:: p
|
|
end type typeWithPointer
|
|
|
|
type :: twoPtr
|
|
type (two), pointer :: p
|
|
end type twoPtr
|
|
|
|
logical, target :: logv
|
|
complex, target :: comv
|
|
character, target :: charv
|
|
character (len=3), target :: chara
|
|
integer, target :: intv
|
|
integer, target, dimension (10,2) :: inta
|
|
integer, target, allocatable, dimension (:) :: intvla
|
|
real, target :: realv
|
|
type(two), target :: twov
|
|
type(twoPtr) :: arrayOfPtr (3)
|
|
type(typeWithPointer), target:: cyclicp1,cyclicp2
|
|
|
|
logical, pointer :: logp
|
|
complex, pointer :: comp
|
|
character, pointer :: charp
|
|
character (len=3), pointer :: charap
|
|
integer, pointer :: intp
|
|
integer, pointer, dimension (:,:) :: intap
|
|
integer, pointer, dimension (:) :: intvlap
|
|
real, pointer :: realp
|
|
type(two), pointer :: twop
|
|
|
|
nullify (logp)
|
|
nullify (comp)
|
|
nullify (charp)
|
|
nullify (charap)
|
|
nullify (intp)
|
|
nullify (intap)
|
|
nullify (intvlap)
|
|
nullify (realp)
|
|
nullify (twop)
|
|
nullify (arrayOfPtr(1)%p)
|
|
nullify (arrayOfPtr(2)%p)
|
|
nullify (arrayOfPtr(3)%p)
|
|
nullify (cyclicp1%p)
|
|
nullify (cyclicp2%p)
|
|
|
|
logp => logv ! Before pointer assignment
|
|
comp => comv
|
|
charp => charv
|
|
charap => chara
|
|
intp => intv
|
|
intap => inta
|
|
intvlap => intvla
|
|
realp => realv
|
|
twop => twov
|
|
arrayOfPtr(2)%p => twov
|
|
cyclicp1%i = 1
|
|
cyclicp1%p => cyclicp2
|
|
cyclicp2%i = 2
|
|
cyclicp2%p => cyclicp1
|
|
|
|
logv = associated(logp) ! Before value assignment
|
|
comv = cmplx(1,2)
|
|
charv = "a"
|
|
chara = "abc"
|
|
intv = 10
|
|
inta(:,:) = 1
|
|
inta(3,1) = 3
|
|
allocate (intvla(10))
|
|
intvla(:) = 2
|
|
intvla(4) = 4
|
|
intvlap => intvla
|
|
realv = 3.14
|
|
|
|
allocate (twov%ivla1(3))
|
|
allocate (twov%ivla2(2,2))
|
|
twov%ivla1(1) = 11
|
|
twov%ivla1(2) = 12
|
|
twov%ivla1(3) = 13
|
|
twov%ivla2(1,1) = 211
|
|
twov%ivla2(2,1) = 221
|
|
twov%ivla2(1,2) = 212
|
|
twov%ivla2(2,2) = 222
|
|
|
|
intv = intv + 1 ! After value assignment
|
|
|
|
end program pointers
|