* [PATCH v4 1/3] gdb/testsuite: Fix indentation issues in gdb.dwarf2/dynarr-ptr.exp
2024-01-04 12:35 [PATCH v4 0/3] Dynamic properties of pointers Abdul Basit Ijaz
@ 2024-01-04 12:35 ` Abdul Basit Ijaz
2024-01-11 17:47 ` Tom Tromey
2024-01-04 12:35 ` [PATCH v4 2/3] gdb, types: Resolve pointer types dynamically Abdul Basit Ijaz
` (2 subsequent siblings)
3 siblings, 1 reply; 9+ messages in thread
From: Abdul Basit Ijaz @ 2024-01-04 12:35 UTC (permalink / raw)
To: gdb-patches; +Cc: abdul.b.ijaz, thiago.bauermann, tom, simark
From: "Ijaz, Abdul B" <abdul.b.ijaz@intel.com>
---
gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp | 138 ++++++++++++------------
1 file changed, 69 insertions(+), 69 deletions(-)
diff --git a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
index 6e4a331eca8..26c64278103 100644
--- a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
+++ b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
@@ -120,7 +120,7 @@ Dwarf::assemble $asm_file {
# the compiler.
if { [prepare_for_testing "failed to prepare" ${testfile} \
- [list $srcfile $asm_file] {nodebug}] } {
+ [list $srcfile $asm_file] {nodebug}] } {
return -1
}
@@ -133,219 +133,219 @@ gdb_test_no_output "set language ada"
# foo.three_ptr.all
gdb_test "print foo.three_ptr.all" \
- " = \\(1, 2, 3\\)"
+ " = \\(1, 2, 3\\)"
gdb_test "print foo.three_ptr.all(1)" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr.all(2)" \
- " = 2"
+ " = 2"
gdb_test "print foo.three_ptr.all(3)" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr.all'first" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr.all'last" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr.all'length" \
- " = 3"
+ " = 3"
gdb_test "ptype foo.three_ptr.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(<>\\) of integer"
# foo.three_ptr
gdb_test "print foo.three_ptr(1)" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr(2)" \
- " = 2"
+ " = 2"
gdb_test "print foo.three_ptr(3)" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr'first" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr'last" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr'length" \
- " = 3"
+ " = 3"
gdb_test "ptype foo.three_ptr" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(<>\\) of integer"
# foo.three_ptr_tdef.all
gdb_test "print foo.three_ptr_tdef.all" \
- " = \\(1, 2, 3\\)"
+ " = \\(1, 2, 3\\)"
gdb_test "print foo.three_ptr_tdef.all(1)" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr_tdef.all(2)" \
- " = 2"
+ " = 2"
gdb_test "print foo.three_ptr_tdef.all(3)" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr_tdef.all'first" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr_tdef.all'last" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr_tdef.all'length" \
- " = 3"
+ " = 3"
gdb_test "ptype foo.three_ptr_tdef.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(<>\\) of integer"
# foo.three_ptr_tdef
gdb_test "print foo.three_ptr_tdef(1)" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr_tdef(2)" \
- " = 2"
+ " = 2"
gdb_test "print foo.three_ptr_tdef(3)" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr_tdef'first" \
- " = 1"
+ " = 1"
gdb_test "print foo.three_ptr_tdef'last" \
- " = 3"
+ " = 3"
gdb_test "print foo.three_ptr_tdef'length" \
- " = 3"
+ " = 3"
gdb_test "ptype foo.three_ptr_tdef" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(<>\\) of integer"
# foo.five_ptr.all
gdb_test "print foo.five_ptr.all" \
- " = \\(2 => 5, 8, 13, 21, 34\\)"
+ " = \\(2 => 5, 8, 13, 21, 34\\)"
gdb_test "print foo.five_ptr.all(2)" \
- " = 5"
+ " = 5"
gdb_test "print foo.five_ptr.all(3)" \
- " = 8"
+ " = 8"
gdb_test "print foo.five_ptr.all(4)" \
- " = 13"
+ " = 13"
gdb_test "print foo.five_ptr.all(5)" \
- " = 21"
+ " = 21"
gdb_test "print foo.five_ptr.all(6)" \
- " = 34"
+ " = 34"
gdb_test "print foo.five_ptr.all'first" \
- " = 2"
+ " = 2"
gdb_test "print foo.five_ptr.all'last" \
- " = 6"
+ " = 6"
gdb_test "print foo.five_ptr.all'length" \
- " = 5"
+ " = 5"
gdb_test "ptype foo.five_ptr.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(<>\\) of integer"
# foo.five_ptr
gdb_test "print foo.five_ptr(2)" \
- " = 5"
+ " = 5"
gdb_test "print foo.five_ptr(3)" \
- " = 8"
+ " = 8"
gdb_test "print foo.five_ptr(4)" \
- " = 13"
+ " = 13"
gdb_test "print foo.five_ptr(5)" \
- " = 21"
+ " = 21"
gdb_test "print foo.five_ptr(6)" \
- " = 34"
+ " = 34"
gdb_test "print foo.five_ptr'first" \
- " = 2"
+ " = 2"
gdb_test "print foo.five_ptr'last" \
- " = 6"
+ " = 6"
gdb_test "print foo.five_ptr'length" \
- " = 5"
+ " = 5"
gdb_test "ptype foo.five_ptr" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(<>\\) of integer"
# foo.five_ptr_tdef.all
gdb_test "print foo.five_ptr_tdef.all" \
- " = \\(2 => 5, 8, 13, 21, 34\\)"
+ " = \\(2 => 5, 8, 13, 21, 34\\)"
gdb_test "print foo.five_ptr_tdef.all(2)" \
- " = 5"
+ " = 5"
gdb_test "print foo.five_ptr_tdef.all(3)" \
- " = 8"
+ " = 8"
gdb_test "print foo.five_ptr_tdef.all(4)" \
- " = 13"
+ " = 13"
gdb_test "print foo.five_ptr_tdef.all(5)" \
- " = 21"
+ " = 21"
gdb_test "print foo.five_ptr_tdef.all(6)" \
- " = 34"
+ " = 34"
gdb_test "print foo.five_ptr_tdef.all'first" \
- " = 2"
+ " = 2"
gdb_test "print foo.five_ptr_tdef.all'last" \
- " = 6"
+ " = 6"
gdb_test "print foo.five_ptr_tdef.all'length" \
- " = 5"
+ " = 5"
gdb_test "ptype foo.five_ptr_tdef.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(<>\\) of integer"
# foo.five_ptr_tdef
gdb_test "print foo.five_ptr_tdef(2)" \
- " = 5"
+ " = 5"
gdb_test "print foo.five_ptr_tdef(3)" \
- " = 8"
+ " = 8"
gdb_test "print foo.five_ptr_tdef(4)" \
- " = 13"
+ " = 13"
gdb_test "print foo.five_ptr_tdef(5)" \
- " = 21"
+ " = 21"
gdb_test "print foo.five_ptr_tdef(6)" \
- " = 34"
+ " = 34"
gdb_test "print foo.five_ptr_tdef'first" \
- " = 2"
+ " = 2"
gdb_test "print foo.five_ptr_tdef'last" \
- " = 6"
+ " = 6"
gdb_test "print foo.five_ptr_tdef'length" \
- " = 5"
+ " = 5"
gdb_test "ptype foo.five_ptr_tdef" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(<>\\) of integer"
--
2.34.1
Intel Deutschland GmbH
Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928
^ permalink raw reply [flat|nested] 9+ messages in thread* [PATCH v4 2/3] gdb, types: Resolve pointer types dynamically
2024-01-04 12:35 [PATCH v4 0/3] Dynamic properties of pointers Abdul Basit Ijaz
2024-01-04 12:35 ` [PATCH v4 1/3] gdb/testsuite: Fix indentation issues in gdb.dwarf2/dynarr-ptr.exp Abdul Basit Ijaz
@ 2024-01-04 12:35 ` Abdul Basit Ijaz
2024-01-11 17:50 ` Tom Tromey
2024-01-04 12:35 ` [PATCH v4 3/3] gdb, testsuite, fortran: Fix sizeof intrinsic for Fortran pointers Abdul Basit Ijaz
2024-01-11 17:51 ` [PATCH v4 0/3] Dynamic properties of pointers Tom Tromey
3 siblings, 1 reply; 9+ messages in thread
From: Abdul Basit Ijaz @ 2024-01-04 12:35 UTC (permalink / raw)
To: gdb-patches; +Cc: abdul.b.ijaz, thiago.bauermann, tom, simark, Bernhard Heckel
From: Bernhard Heckel <bernhard.heckel@intel.com>
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>
---
gdb/gdbtypes.c | 7 +-
gdb/testsuite/gdb.cp/vla-cxx.cc | 4 +
gdb/testsuite/gdb.cp/vla-cxx.exp | 15 +++
gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp | 16 +--
.../gdb.fortran/pointer-to-pointer.exp | 2 +-
gdb/testsuite/gdb.fortran/pointers.exp | 115 ++++++++++++++++++
gdb/testsuite/gdb.fortran/pointers.f90 | 29 +++++
gdb/valprint.c | 6 -
8 files changed, 177 insertions(+), 17 deletions(-)
create mode 100644 gdb/testsuite/gdb.fortran/pointers.exp
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 2580b4f19ee..14589eafb93 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -2042,8 +2042,10 @@ is_dynamic_type_internal (struct type *type, int top_level)
{
type = check_typedef (type);
- /* We only want to recognize references at the outermost level. */
- if (top_level && type->code () == TYPE_CODE_REF)
+ /* We only want to recognize references and pointers at the outermost
+ level. */
+ if (top_level
+ && (type->code () == TYPE_CODE_REF || type->code () == TYPE_CODE_PTR))
type = check_typedef (type->target_type ());
/* Types that have a dynamic TYPE_DATA_LOCATION are considered
@@ -2779,6 +2781,7 @@ resolve_dynamic_type_internal (struct type *type,
switch (type->code ())
{
case TYPE_CODE_REF:
+ case TYPE_CODE_PTR:
{
struct property_addr_info pinfo;
diff --git a/gdb/testsuite/gdb.cp/vla-cxx.cc b/gdb/testsuite/gdb.cp/vla-cxx.cc
index 0ecb130f676..83e238339ac 100644
--- a/gdb/testsuite/gdb.cp/vla-cxx.cc
+++ b/gdb/testsuite/gdb.cp/vla-cxx.cc
@@ -40,6 +40,10 @@ int main(int argc, char **argv)
typedef typeof (vla) &vlareftypedef;
vlareftypedef vlaref2 (vla);
container c;
+ typeof (vla) *ptr = nullptr;
+
+ // Before pointer assignment.
+ ptr = &vla;
for (int i = 0; i < z; ++i)
vla[i] = 5 + 2 * i;
diff --git a/gdb/testsuite/gdb.cp/vla-cxx.exp b/gdb/testsuite/gdb.cp/vla-cxx.exp
index 0a588220679..ade688cedda 100644
--- a/gdb/testsuite/gdb.cp/vla-cxx.exp
+++ b/gdb/testsuite/gdb.cp/vla-cxx.exp
@@ -23,6 +23,18 @@ if ![runto_main] {
return -1
}
+gdb_breakpoint [gdb_get_line_number "Before pointer assignment"]
+gdb_continue_to_breakpoint "Before pointer assignment"
+
+gdb_test "ptype ptr" "= int \\(\\*\\)\\\[3\\\]" \
+ "ptype ptr, before pointer assignment"
+
+gdb_test "print ptr" "= \\(int \\(\\*\\)\\\[3\\\]\\) 0x0" \
+ "print ptr, before pointer assignment"
+
+gdb_test "print *ptr" "Cannot access memory at address 0x0" \
+ "print *ptr, before pointer assignment"
+
gdb_breakpoint [gdb_get_line_number "vlas_filled"]
gdb_continue_to_breakpoint "vlas_filled"
@@ -33,3 +45,6 @@ gdb_test "print vlaref" " = \\(int \\(&\\)\\\[3\\\]\\) @$hex: \\{5, 7, 9\\}"
# bug being tested, it's better not to depend on the exact spelling.
gdb_test "print vlaref2" " = \\(.*\\) @$hex: \\{5, 7, 9\\}"
gdb_test "print c" " = \\{e = \\{c = @$hex\\}\\}"
+gdb_test "ptype ptr" "int \\(\\*\\)\\\[3\\\]"
+gdb_test "print ptr" "\\(int \\(\\*\\)\\\[3\\\]\\) $hex"
+gdb_test "print *ptr" " = \\{5, 7, 9\\}"
diff --git a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
index 26c64278103..72b79a87235 100644
--- a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
+++ b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp
@@ -154,7 +154,7 @@ gdb_test "print foo.three_ptr.all'length" \
" = 3"
gdb_test "ptype foo.three_ptr.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(1 \\.\\. 3\\) of integer"
# foo.three_ptr
@@ -177,7 +177,7 @@ gdb_test "print foo.three_ptr'length" \
" = 3"
gdb_test "ptype foo.three_ptr" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(1 \\.\\. 3\\) of integer"
# foo.three_ptr_tdef.all
@@ -203,7 +203,7 @@ gdb_test "print foo.three_ptr_tdef.all'length" \
" = 3"
gdb_test "ptype foo.three_ptr_tdef.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(1 \\.\\. 3\\) of integer"
# foo.three_ptr_tdef
@@ -226,7 +226,7 @@ gdb_test "print foo.three_ptr_tdef'length" \
" = 3"
gdb_test "ptype foo.three_ptr_tdef" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(1 \\.\\. 3\\) of integer"
# foo.five_ptr.all
@@ -258,7 +258,7 @@ gdb_test "print foo.five_ptr.all'length" \
" = 5"
gdb_test "ptype foo.five_ptr.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(2 \\.\\. 6\\) of integer"
# foo.five_ptr
@@ -287,7 +287,7 @@ gdb_test "print foo.five_ptr'length" \
" = 5"
gdb_test "ptype foo.five_ptr" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(2 \\.\\. 6\\) of integer"
# foo.five_ptr_tdef.all
@@ -319,7 +319,7 @@ gdb_test "print foo.five_ptr_tdef.all'length" \
" = 5"
gdb_test "ptype foo.five_ptr_tdef.all" \
- " = array \\(<>\\) of integer"
+ " = array \\(2 \\.\\. 6\\) of integer"
# foo.five_ptr_tdef
@@ -348,4 +348,4 @@ gdb_test "print foo.five_ptr_tdef'length" \
" = 5"
gdb_test "ptype foo.five_ptr_tdef" \
- " = access array \\(<>\\) of integer"
+ " = access array \\(2 \\.\\. 6\\) of integer"
diff --git a/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp b/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp
index 0fd5fb0996f..78b7ba17588 100644
--- a/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp
+++ b/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp
@@ -41,7 +41,7 @@ gdb_test "print buffer" \
gdb_test "ptype buffer" \
[multi_line \
"type = PTR TO -> \\( Type l_buffer" \
- " $real4 :: alpha\\(:\\)" \
+ " $real4 :: alpha\\(5\\)" \
"End Type l_buffer \\)" ]
gdb_test "ptype buffer%alpha" "type = $real4 \\(5\\)"
diff --git a/gdb/testsuite/gdb.fortran/pointers.exp b/gdb/testsuite/gdb.fortran/pointers.exp
new file mode 100644
index 00000000000..dafea392799
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/pointers.exp
@@ -0,0 +1,115 @@
+# Copyright 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/>.
+
+standard_testfile "pointers.f90"
+load_lib fortran.exp
+
+if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
+ {debug f90 quiet}]} {
+ return -1
+}
+
+if {![fortran_runto_main]} {
+ untested "could not run to main"
+ return -1
+}
+
+# Depending on the compiler being used, the type names can be printed
+# differently.
+set logical [fortran_logical4]
+set real [fortran_real4]
+set int [fortran_int4]
+set complex [fortran_complex4]
+
+gdb_breakpoint [gdb_get_line_number "Before pointer assignment"]
+gdb_continue_to_breakpoint "Before pointer assignment"
+gdb_test "print logp" "= \\(PTR TO -> \\( $logical \\)\\) 0x0" \
+ "print logp, not associated"
+gdb_test "print *logp" "Cannot access memory at address 0x0" \
+ "print *logp, not associated"
+gdb_test "print comp" "= \\(PTR TO -> \\( $complex \\)\\) 0x0" \
+ "print comp, not associated"
+gdb_test "print *comp" "Cannot access memory at address 0x0" \
+ "print *comp, not associated"
+gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1 \\)\\) 0x0" \
+ "print charp, not associated"
+gdb_test "print *charp" "Cannot access memory at address 0x0" \
+ "print *charp, not associated"
+gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3 \\)\\) 0x0" \
+ "print charap, not associated"
+gdb_test "print *charap" "Cannot access memory at address 0x0" \
+ "print *charap, not associated"
+gdb_test "print intp" "= \\(PTR TO -> \\( $int \\)\\) 0x0" \
+ "print intp, not associated"
+gdb_test "print *intp" "Cannot access memory at address 0x0" \
+ "print *intp, not associated"
+gdb_test "print intap" " = <not associated>" "print intap, not associated"
+gdb_test "print realp" "= \\(PTR TO -> \\( $real \\)\\) 0x0" \
+ "print realp, not associated"
+gdb_test "print *realp" "Cannot access memory at address 0x0" \
+ "print *realp, not associated"
+gdb_test "print \$my_var = intp" "= \\(PTR TO -> \\( $int \\)\\) 0x0"
+gdb_test "print cyclicp1" "= \\( i = -?\\d+, p = 0x0 \\)" \
+ "print cyclicp1, not associated"
+gdb_test "print cyclicp1%p" \
+ "= \\(PTR TO -> \\( Type typewithpointer \\)\\) 0x0" \
+ "print cyclicp1%p, not associated"
+
+gdb_breakpoint [gdb_get_line_number "Before value assignment"]
+gdb_continue_to_breakpoint "Before value assignment"
+gdb_test "print *(twop)%ivla2" "= <not allocated>"
+
+gdb_breakpoint [gdb_get_line_number "After value assignment"]
+gdb_continue_to_breakpoint "After value assignment"
+gdb_test "print logp" "= \\(PTR TO -> \\( $logical \\)\\) $hex\( <.*>\)?"
+gdb_test "print *logp" "= \\.TRUE\\."
+gdb_test "print comp" "= \\(PTR TO -> \\( $complex \\)\\) $hex\( <.*>\)?"
+gdb_test "print *comp" "= \\(1,2\\)"
+gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1 \\)\\) $hex\( <.*>\)?"
+gdb_test "print *charp" "= 'a'"
+gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3 \\)\\) $hex\( <.*>\)?"
+gdb_test "print *charap" "= 'abc'"
+gdb_test "print intp" "= \\(PTR TO -> \\( $int \\)\\) $hex\( <.*>\)?"
+gdb_test "print *intp" "= 10"
+gdb_test "print intap" "= \\(\\(1, 1, 3(, 1){7}\\) \\(1(, 1){9}\\)\\)" \
+ "print intap, associated"
+gdb_test "print intvlap" "= \\(2, 2, 2, 4(, 2){6}\\)" \
+ "print intvlap, associated"
+gdb_test "print realp" "= \\(PTR TO -> \\( $real \\)\\) $hex\( <.*>\)?"
+gdb_test "print *realp" "= 3\\.14000\\d+"
+gdb_test "print arrayOfPtr(2)%p" "= \\(PTR TO -> \\( Type two \\)\\) $hex\( <.*>\)?"
+gdb_test "print *(arrayOfPtr(2)%p)" \
+ "= \\( ivla1 = \\(11, 12, 13\\), ivla2 = \\(\\(211, 221\\) \\(212, 222\\)\\) \\)"
+gdb_test "print arrayOfPtr(3)%p" "= \\(PTR TO -> \\( Type two \\)\\) 0x0" \
+ "print arrayOfPtr(3)%p"
+
+gdb_test_multiple "print *(arrayOfPtr(3)%p)" \
+ "print *(arrayOfPtr(3)%p), associated" {
+ # gfortran
+ -re -wrap "Cannot access memory at address 0x0" {
+ pass $gdb_test_name
+ }
+ # ifx
+ -re -wrap "Location address is not set." {
+ pass $gdb_test_name
+ }
+}
+
+gdb_test "print cyclicp1" "= \\( i = 1, p = $hex\( <.*>\)? \\)"
+gdb_test "print cyclicp1%p" "= \\(PTR TO -> \\( Type typewithpointer \\)\\) $hex\( <.*>\)?"
+gdb_test "print *((integer*) &inta + 2)" "= 3" "print temporary pointer, array"
+gdb_test "print *((integer*) &intvla + 3)" "= 4" "print temporary pointer, allocated vla"
+gdb_test "print \$pc" "\\(PTR TO -> \\( void \\(\\) \\(\\) \\)\\) $hex <pointers\\+\\d+>" \
+ "Print program counter"
diff --git a/gdb/testsuite/gdb.fortran/pointers.f90 b/gdb/testsuite/gdb.fortran/pointers.f90
index 8708d505ada..0fb6b36a25c 100644
--- a/gdb/testsuite/gdb.fortran/pointers.f90
+++ b/gdb/testsuite/gdb.fortran/pointers.f90
@@ -20,14 +20,26 @@ program pointers
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
@@ -35,6 +47,7 @@ program pointers
character (len=3), pointer :: charap
integer, pointer :: intp
integer, pointer, dimension (:,:) :: intap
+ integer, pointer, dimension (:) :: intvlap
real, pointer :: realp
type(two), pointer :: twop
@@ -44,8 +57,14 @@ program pointers
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
@@ -53,8 +72,14 @@ program pointers
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)
@@ -63,6 +88,10 @@ program pointers
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))
diff --git a/gdb/valprint.c b/gdb/valprint.c
index 00943c1111a..2da435d153b 100644
--- a/gdb/valprint.c
+++ b/gdb/valprint.c
@@ -1156,12 +1156,6 @@ value_check_printable (struct value *val, struct ui_file *stream,
return 0;
}
- if (type_not_associated (val->type ()))
- {
- val_print_not_associated (stream);
- return 0;
- }
-
if (type_not_allocated (val->type ()))
{
val_print_not_allocated (stream);
--
2.34.1
Intel Deutschland GmbH
Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928
^ permalink raw reply [flat|nested] 9+ messages in thread* [PATCH v4 3/3] gdb, testsuite, fortran: Fix sizeof intrinsic for Fortran pointers
2024-01-04 12:35 [PATCH v4 0/3] Dynamic properties of pointers Abdul Basit Ijaz
2024-01-04 12:35 ` [PATCH v4 1/3] gdb/testsuite: Fix indentation issues in gdb.dwarf2/dynarr-ptr.exp Abdul Basit Ijaz
2024-01-04 12:35 ` [PATCH v4 2/3] gdb, types: Resolve pointer types dynamically Abdul Basit Ijaz
@ 2024-01-04 12:35 ` Abdul Basit Ijaz
2024-01-11 17:51 ` [PATCH v4 0/3] Dynamic properties of pointers Tom Tromey
3 siblings, 0 replies; 9+ messages in thread
From: Abdul Basit Ijaz @ 2024-01-04 12:35 UTC (permalink / raw)
To: gdb-patches
Cc: abdul.b.ijaz, thiago.bauermann, tom, simark, Nils-Christian Kempke
From: Nils-Christian Kempke <nils-christian.kempke@intel.com>
For Fortran pointers gfortran/ifx emits DW_TAG_pointer_types like
<2><17d>: Abbrev Number: 22 (DW_TAG_variable)
<180> DW_AT_name : (indirect string, offset: 0x1f1): fptr
<184> DW_AT_type : <0x214>
...
<1><219>: Abbrev Number: 27 (DW_TAG_array_type)
<21a> DW_AT_type : <0x10e>
<216> DW_AT_associated : ...
The 'pointer property' in Fortran is implicitly modeled by adding a
DW_AT_associated to the type of the variable (see also the
DW_AT_associated description in DWARF 5). A Fortran pointer is more
than an address and thus different from a C pointer. It is a
self contained type having additional fields such as, e.g., the rank of
its underlying array. This motivates the intended DWARF modeling of
Fortran pointers via the DW_AT_associated attribute.
This patch adds support for the sizeof intrinsic by simply dereferencing
pointer types when encountered during a sizeof evaluation.
The patch also adds a test for the sizeof intrinsic which was not tested
before.
Tested-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
---
gdb/eval.c | 7 ++
gdb/testsuite/gdb.fortran/sizeof.exp | 115 +++++++++++++++++++++++++++
gdb/testsuite/gdb.fortran/sizeof.f90 | 108 +++++++++++++++++++++++++
3 files changed, 230 insertions(+)
create mode 100644 gdb/testsuite/gdb.fortran/sizeof.exp
create mode 100644 gdb/testsuite/gdb.fortran/sizeof.f90
diff --git a/gdb/eval.c b/gdb/eval.c
index e075cc3138d..b7c6aa8ed69 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -2706,6 +2706,13 @@ evaluate_subexp_for_sizeof_base (struct expression *exp, struct type *type)
if (exp->language_defn->la_language == language_cplus
&& (TYPE_IS_REFERENCE (type)))
type = check_typedef (type->target_type ());
+ else if (exp->language_defn->la_language == language_fortran
+ && type->code () == TYPE_CODE_PTR)
+ {
+ /* Dereference Fortran pointer types to allow them for the Fortran
+ sizeof intrinsic. */
+ type = check_typedef (type->target_type ());
+ }
return value_from_longest (size_type, (LONGEST) type->length ());
}
diff --git a/gdb/testsuite/gdb.fortran/sizeof.exp b/gdb/testsuite/gdb.fortran/sizeof.exp
new file mode 100644
index 00000000000..be59a37f1a6
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/sizeof.exp
@@ -0,0 +1,115 @@
+# Copyright 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/> .
+
+# Testing GDB's implementation of SIZE keyword.
+
+require allow_fortran_tests
+
+standard_testfile ".f90"
+load_lib fortran.exp
+
+if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
+ {debug f90}]} {
+ return -1
+}
+
+if ![fortran_runto_main] {
+ return -1
+}
+
+gdb_breakpoint [gdb_get_line_number "Test breakpoint"]
+gdb_breakpoint [gdb_get_line_number "Past unassigned pointers"]
+gdb_breakpoint [gdb_get_line_number "Final breakpoint"]
+
+set done_unassigned 0
+set found_final_breakpoint 0
+set test_count 0
+
+# We are running tests defined in the executable here. So, in the .exp file
+# we do not know when the 'Final breakpoint' will be hit exactly. We place a
+# limit on the number of tests that can be run, just in case something goes
+# wrong, and GDB gets stuck in an loop here.
+while { $test_count < 200 } {
+ with_test_prefix "test $test_count" {
+ incr test_count
+
+ gdb_test_multiple "continue" "continue" {
+ -re -wrap "! Test breakpoint" {
+ # We can run a test from here.
+ }
+ -re -wrap "! Past unassigned pointers" {
+ # Done with testing unassigned pointers.
+ set done_unassigned 1
+ continue
+ }
+ -re -wrap "! Final breakpoint" {
+ # We're done with the tests.
+ set found_final_breakpoint 1
+ }
+ }
+
+ if ($found_final_breakpoint) {
+ break
+ }
+
+ # First grab the expected answer.
+ set answer [get_valueof "" "answer" "**unknown**"]
+
+ # Now move up a frame and figure out a command for us to run
+ # as a test.
+ set command ""
+ gdb_test_multiple "up" "up" {
+ -re -wrap "\r\n\[0-9\]+\[ \t\]+call test_sizeof \\((\[^\r\n\]+)\\)" {
+ set command $expect_out(1,string)
+ }
+ }
+
+ gdb_assert { ![string equal $command ""] } "found a command to run"
+
+ set is_pointer_to_array [string match "sizeof (*a_p)*" $command]
+
+ if {$done_unassigned || !$is_pointer_to_array} {
+ gdb_test "p $command" " = $answer"
+ } else {
+ # Gfortran and ifx have slightly different behavior for unassigned
+ # pointers to arrays. While ifx will print 0 as the sizeof result,
+ # gfortran will print the size of the base type of the pointer or
+ # array. Since the default behavior in GDB was to print 0 we keep
+ # this and make an exception for gfortran here.
+ gdb_test_multiple "p $command" "p $command" {
+ -re -wrap " = $answer" {
+ pass $gdb_test_name
+ }
+ -re -wrap " = 0" {
+ pass $gdb_test_name
+ }
+ }
+ }
+ }
+}
+
+gdb_assert {$found_final_breakpoint} "ran all compiled in tests"
+
+# Here some more GDB specific tests that might fail with compilers.
+# GDB will print sizeof(1.4) = 8 while gfortran will probably print 4 but
+# GDB says ptype 1.4 is real*8 so the output is expected.
+
+gdb_test "ptype 1" "type = int"
+gdb_test "p sizeof(1)" "= 4"
+
+gdb_test "ptype 1.3" "type = real\\*8"
+gdb_test "p sizeof(1.3)" "= 8"
+
+gdb_test "p sizeof ('asdsasd')" "= 7"
diff --git a/gdb/testsuite/gdb.fortran/sizeof.f90 b/gdb/testsuite/gdb.fortran/sizeof.f90
new file mode 100644
index 00000000000..b8490a1cdb1
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/sizeof.f90
@@ -0,0 +1,108 @@
+! Copyright 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/>.
+
+module data
+ use, intrinsic :: iso_c_binding, only : C_SIZE_T
+ implicit none
+
+ character, target :: char_v
+ character (len=3), target :: char_a
+ integer, target :: int_v
+ integer, target, dimension(:,:) :: int_2da (3,2)
+ real*4, target :: real_v
+ real*4, target :: real_a(4)
+ real*4, target, dimension (:), allocatable :: real_a_alloc
+
+ character, pointer :: char_v_p
+ character (len=3), pointer :: char_a_p
+ integer, pointer :: int_v_p
+ integer, pointer, dimension (:,:) :: int_2da_p
+ real*4, pointer :: real_v_p
+ real*4, pointer, dimension(:) :: real_a_p
+ real*4, dimension(:), pointer :: real_alloc_a_p
+
+contains
+subroutine test_sizeof (answer)
+ integer(C_SIZE_T) :: answer
+
+ print *, answer ! Test breakpoint
+end subroutine test_sizeof
+
+subroutine run_tests ()
+ call test_sizeof (sizeof (char_v))
+ call test_sizeof (sizeof (char_a))
+ call test_sizeof (sizeof (int_v))
+ call test_sizeof (sizeof (int_2da))
+ call test_sizeof (sizeof (real_v))
+ call test_sizeof (sizeof (real_a))
+ call test_sizeof (sizeof (real_a_alloc))
+
+ call test_sizeof (sizeof (char_v_p))
+ call test_sizeof (sizeof (char_a_p))
+ call test_sizeof (sizeof (int_v_p))
+ call test_sizeof (sizeof (int_2da_p))
+ call test_sizeof (sizeof (real_v_p))
+ call test_sizeof (sizeof (real_a_p))
+ call test_sizeof (sizeof (real_alloc_a_p))
+end subroutine run_tests
+
+end module data
+
+program sizeof_tests
+ use iso_c_binding
+ use data
+
+ implicit none
+
+ allocate (real_a_alloc(5))
+
+ nullify (char_v_p)
+ nullify (char_a_p)
+ nullify (int_v_p)
+ nullify (int_2da_p)
+ nullify (real_v_p)
+ nullify (real_a_p)
+ nullify (real_alloc_a_p)
+
+ ! Test nullified
+ call run_tests ()
+
+ char_v_p => char_v ! Past unassigned pointers
+ char_a_p => char_a
+ int_v_p => int_v
+ int_2da_p => int_2da
+ real_v_p => real_v
+ real_a_p => real_a
+ real_alloc_a_p => real_a_alloc
+
+ ! Test pointer assignment
+ call run_tests ()
+
+ char_v = 'a'
+ char_a = "aaa"
+ int_v = 10
+ int_2da = reshape((/1, 2, 3, 4, 5, 6/), shape(int_2da))
+ real_v = 123.123
+ real_a_p = (/-1.1, -1.2, -1.3, -1.4/)
+ real_a_alloc = (/1.1, 2.2, 3.3, 4.4, 5.5/)
+
+ ! After allocate/value assignment
+ call run_tests ()
+
+ deallocate (real_a_alloc)
+
+ print *, "done" ! Final breakpoint
+
+end program sizeof_tests
--
2.34.1
Intel Deutschland GmbH
Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928
^ permalink raw reply [flat|nested] 9+ messages in thread