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0ba7f47499
gdb/gdb-vla-intel-fortran-vla-strings.patch
Jan Kratochvil 0ba7f47499 Fix gdb-vla-intel-fortran-vla-strings.patch to no longer modify cached 
inferior types.
2021-03-04 20:45:01 +01:00

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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Fedora GDB patches <invalid@email.com>
Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: gdb-vla-intel-fortran-vla-strings.patch
;;=push
git diff --stat -p gdb/master...gdb/users/bheckel/fortran-vla-strings
0ad7d8d1a3a36c6e04e3b6d37d8825f18d595723
gdb/NEWS | 2 +
gdb/c-valprint.c | 22 +++++
gdb/dwarf2read.c | 158 +++++++++++++++++++++++++-----
gdb/f-typeprint.c | 93 +++++++++---------
gdb/gdbtypes.c | 44 ++++++++-
gdb/testsuite/gdb.cp/vla-cxx.cc | 9 ++
gdb/testsuite/gdb.cp/vla-cxx.exp | 9 ++
gdb/testsuite/gdb.fortran/pointers.exp | 143 +++++++++++++++++++++++++++
gdb/testsuite/gdb.fortran/pointers.f90 | 109 +++++++++++++++++++++
gdb/testsuite/gdb.fortran/print_type.exp | 100 +++++++++++++++++++
gdb/testsuite/gdb.fortran/vla-ptype.exp | 12 +--
gdb/testsuite/gdb.fortran/vla-strings.exp | 103 +++++++++++++++++++
gdb/testsuite/gdb.fortran/vla-strings.f90 | 39 ++++++++
gdb/testsuite/gdb.fortran/vla-type.exp | 7 +-
gdb/testsuite/gdb.fortran/vla-value.exp | 12 ++-
gdb/testsuite/gdb.mi/mi-var-child-f.exp | 7 +-
gdb/testsuite/gdb.mi/mi-vla-fortran.exp | 27 ++---
gdb/typeprint.c | 19 ++++
gdb/valops.c | 16 ++-
gdb/valprint.c | 6 --
20 files changed, 827 insertions(+), 110 deletions(-)
diff --git a/gdb/NEWS b/gdb/NEWS
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -985,6 +985,8 @@ SH-5/SH64 running OpenBSD SH-5/SH64 support in sh*-*-openbsd*
*** Changes in GDB 8.1
+* Fortran: Support pointers to dynamic types.
+
* GDB now supports dynamically creating arbitrary register groups specified
in XML target descriptions. This allows for finer grain grouping of
registers on systems with a large amount of registers.
diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c
--- a/gdb/c-valprint.c
+++ b/gdb/c-valprint.c
@@ -572,6 +572,27 @@ c_value_print (struct value *val, struct ui_file *stream,
else
{
/* normal case */
+ if (type->code () == TYPE_CODE_PTR
+ && 1 == is_dynamic_type (type))
+ {
+ CORE_ADDR addr = value_as_address (val);
+
+ /* We resolve the target-type only when the
+ pointer is associated. */
+ if ((addr != 0)
+ && (0 == type_not_associated (type)))
+ {
+ type = copy_type (type);
+ TYPE_TARGET_TYPE (type) =
+ resolve_dynamic_type (TYPE_TARGET_TYPE (type),
+ {}, addr);
+ }
+ }
+ else
+ {
+ /* Do nothing. References are already resolved from the beginning,
+ only pointers are resolved when we actual need the target. */
+ }
fprintf_filtered (stream, "(");
type_print (value_type (val), "", stream, -1);
fprintf_filtered (stream, ") ");
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -1562,7 +1562,10 @@ static void read_signatured_type (signatured_type *sig_type,
static int attr_to_dynamic_prop (const struct attribute *attr,
struct die_info *die, struct dwarf2_cu *cu,
- struct dynamic_prop *prop, struct type *type);
+ struct dynamic_prop *prop,
+ struct type *default_type,
+ const gdb_byte *additional_data,
+ int additional_data_size);
/* memory allocation interface */
@@ -13631,7 +13634,7 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu)
newobj->static_link
= XOBNEW (&objfile->objfile_obstack, struct dynamic_prop);
attr_to_dynamic_prop (attr, die, cu, newobj->static_link,
- cu->addr_type ());
+ cu->addr_type (), NULL, 0);
}
cu->list_in_scope = cu->get_builder ()->get_local_symbols ();
@@ -16073,7 +16076,7 @@ read_structure_type (struct die_info *die, struct dwarf2_cu *cu)
else
{
struct dynamic_prop prop;
- if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ()))
+ if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type (), NULL, 0))
type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop);
TYPE_LENGTH (type) = 0;
}
@@ -16764,7 +16767,7 @@ read_array_type (struct die_info *die, struct dwarf2_cu *cu)
byte_stride_prop
= (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop));
stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop,
- prop_type);
+ prop_type, NULL, 0);
if (!stride_ok)
{
complaint (_("unable to read array DW_AT_byte_stride "
@@ -17522,7 +17525,7 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu)
struct attribute *attr;
struct dynamic_prop prop;
bool length_is_constant = true;
- LONGEST length;
+ ULONGEST length = UINT_MAX;
/* There are a couple of places where bit sizes might be made use of
when parsing a DW_TAG_string_type, however, no producer that we know
@@ -17543,6 +17546,10 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu)
}
}
+ index_type = objfile_type (objfile)->builtin_int;
+ range_type = create_static_range_type (NULL, index_type, 1, length);
+
+ /* If DW_AT_string_length is defined, the length is stored in memory. */
attr = dwarf2_attr (die, DW_AT_string_length, cu);
if (attr != nullptr && !attr->form_is_constant ())
{
@@ -17569,13 +17576,68 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu)
}
/* Convert the attribute into a dynamic property. */
- if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type))
+ if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0))
length = 1;
else
length_is_constant = false;
}
else if (attr != nullptr)
{
+ if (attr->form_is_block ())
+ {
+ struct attribute *byte_size, *bit_size;
+ struct dynamic_prop high;
+
+ byte_size = dwarf2_attr (die, DW_AT_byte_size, cu);
+ bit_size = dwarf2_attr (die, DW_AT_bit_size, cu);
+
+ /* DW_AT_byte_size should never occur in combination with
+ DW_AT_bit_size. */
+ if (byte_size != NULL && bit_size != NULL)
+ complaint (_("DW_AT_byte_size AND "
+ "DW_AT_bit_size found together at the same time."));
+
+ /* If DW_AT_string_length AND DW_AT_byte_size exist together,
+ DW_AT_byte_size describes the number of bytes that should be read
+ from the length memory location. */
+ if (byte_size != NULL)
+ {
+ /* Build new dwarf2_locexpr_baton structure with additions to the
+ data attribute, to reflect DWARF specialities to get address
+ sizes. */
+ const gdb_byte append_ops[] =
+ {
+ /* DW_OP_deref_size: size of an address on the target machine
+ (bytes), where the size will be specified by the next
+ operand. */
+ DW_OP_deref_size,
+ /* Operand for DW_OP_deref_size. */
+ (gdb_byte) DW_UNSND(byte_size) };
+
+ if (!attr_to_dynamic_prop (attr, die, cu, &high, index_type,
+ append_ops, ARRAY_SIZE(append_ops)))
+ complaint (_("Could not parse DW_AT_byte_size"));
+ }
+ else if (bit_size != NULL)
+ complaint (_("DW_AT_string_length AND "
+ "DW_AT_bit_size found but not supported yet."));
+ /* If DW_AT_string_length WITHOUT DW_AT_byte_size exist, the default
+ is the address size of the target machine. */
+ else
+ {
+ const gdb_byte append_ops[] =
+ { DW_OP_deref };
+
+ if (!attr_to_dynamic_prop (attr, die, cu, &high, index_type,
+ append_ops, ARRAY_SIZE(append_ops)))
+ complaint (_("Could not parse DW_AT_string_length"));
+ }
+
+ range_type->bounds ()->high = high;
+ }
+ else
+ range_type->bounds ()->high.set_const_val (DW_UNSND(attr));
+
/* This DW_AT_string_length just contains the length with no
indirection. There's no need to create a dynamic property in this
case. Pass 0 for the default value as we know it will not be
@@ -17589,6 +17651,14 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu)
}
else
{
+ /* Check for the DW_AT_byte_size attribute, which represents the length
+ in this case. */
+ attr = dwarf2_attr (die, DW_AT_byte_size, cu);
+ if (attr)
+ range_type->bounds ()->high.set_const_val (DW_UNSND(attr));
+ else
+ range_type->bounds ()->high.set_const_val (1);
+
/* Use 1 as a fallback length if we have nothing else. */
length = 1;
}
@@ -18078,7 +18148,8 @@ read_base_type (struct die_info *die, struct dwarf2_cu *cu)
static int
attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die,
struct dwarf2_cu *cu, struct dynamic_prop *prop,
- struct type *default_type)
+ struct type *default_type,
+ const gdb_byte *additional_data, int additional_data_size)
{
struct dwarf2_property_baton *baton;
dwarf2_per_objfile *per_objfile = cu->per_objfile;
@@ -18108,6 +18179,26 @@ attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die,
break;
}
+ if (additional_data != NULL && additional_data_size > 0)
+ {
+ gdb_byte *data;
+
+ data = (gdb_byte *) obstack_alloc(
+ &cu->per_objfile->objfile->objfile_obstack,
+ DW_BLOCK (attr)->size + additional_data_size);
+ memcpy (data, DW_BLOCK (attr)->data, DW_BLOCK (attr)->size);
+ memcpy (data + DW_BLOCK (attr)->size, additional_data,
+ additional_data_size);
+
+ baton->locexpr.data = data;
+ baton->locexpr.size = DW_BLOCK (attr)->size + additional_data_size;
+ }
+ else
+ {
+ baton->locexpr.data = DW_BLOCK (attr)->data;
+ baton->locexpr.size = DW_BLOCK (attr)->size;
+ }
+
prop->set_locexpr (baton);
gdb_assert (prop->baton () != NULL);
}
@@ -18142,11 +18233,31 @@ attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die,
baton->property_type = die_type (target_die, target_cu);
baton->locexpr.per_cu = cu->per_cu;
baton->locexpr.per_objfile = per_objfile;
- baton->locexpr.size = DW_BLOCK (target_attr)->size;
- baton->locexpr.data = DW_BLOCK (target_attr)->data;
baton->locexpr.is_reference = true;
+
+ if (additional_data != NULL && additional_data_size > 0)
+ {
+ gdb_byte *data;
+
+ data = (gdb_byte *) obstack_alloc (&cu->per_objfile->objfile->objfile_obstack,
+ DW_BLOCK (target_attr)->size + additional_data_size);
+ memcpy (data, DW_BLOCK (target_attr)->data,
+ DW_BLOCK (target_attr)->size);
+ memcpy (data + DW_BLOCK (target_attr)->size,
+ additional_data, additional_data_size);
+
+ baton->locexpr.data = data;
+ baton->locexpr.size = (DW_BLOCK (target_attr)->size
+ + additional_data_size);
+ }
+ else
+ {
+ baton->locexpr.data = DW_BLOCK (target_attr)->data;
+ baton->locexpr.size = DW_BLOCK (target_attr)->size;
+ }
+
prop->set_locexpr (baton);
- gdb_assert (prop->baton () != NULL);
+ gdb_assert (prop->baton() != NULL);
}
else
{
@@ -18308,8 +18419,8 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
}
attr = dwarf2_attr (die, DW_AT_lower_bound, cu);
- if (attr != nullptr)
- attr_to_dynamic_prop (attr, die, cu, &low, base_type);
+ if (attr)
+ attr_to_dynamic_prop (attr, die, cu, &low, base_type, NULL, 0);
else if (!low_default_is_valid)
complaint (_("Missing DW_AT_lower_bound "
"- DIE at %s [in module %s]"),
@@ -18318,10 +18429,10 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
struct attribute *attr_ub, *attr_count;
attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu);
- if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type))
+ if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type, NULL, 0))
{
attr = attr_count = dwarf2_attr (die, DW_AT_count, cu);
- if (attr_to_dynamic_prop (attr, die, cu, &high, base_type))
+ if (attr_to_dynamic_prop (attr, die, cu, &high, base_type, NULL, 0))
{
/* If bounds are constant do the final calculation here. */
if (low.kind () == PROP_CONST && high.kind () == PROP_CONST)
@@ -18372,7 +18483,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
{
struct type *prop_type = cu->addr_sized_int_type (false);
attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop,
- prop_type);
+ prop_type, NULL, 0);
}
struct dynamic_prop bit_stride_prop;
@@ -18392,7 +18503,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
{
struct type *prop_type = cu->addr_sized_int_type (false);
attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop,
- prop_type);
+ prop_type, NULL, 0);
}
}
@@ -24424,7 +24535,7 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
if (attr != NULL)
{
struct type *prop_type = cu->addr_sized_int_type (false);
- if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type))
+ if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0))
type->add_dyn_prop (DYN_PROP_ALLOCATED, prop);
}
@@ -24433,13 +24544,13 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
if (attr != NULL)
{
struct type *prop_type = cu->addr_sized_int_type (false);
- if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type))
+ if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0))
type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop);
}
/* Read DW_AT_data_location and set in type. */
attr = dwarf2_attr (die, DW_AT_data_location, cu);
- if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ()))
+ if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type (), NULL, 0))
type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop);
if (per_objfile->die_type_hash == NULL)
diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c
--- a/gdb/f-typeprint.c
+++ b/gdb/f-typeprint.c
@@ -217,8 +217,9 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
else
{
LONGEST lower_bound = f77_get_lowerbound (type);
+
if (lower_bound != 1) /* Not the default. */
- fprintf_filtered (stream, "%s:", plongest (lower_bound));
+ fprintf_filtered (stream, "%s:", plongest (lower_bound));
/* Make sure that, if we have an assumed size array, we
print out a warning and print the upperbound as '*'. */
@@ -229,7 +230,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
{
LONGEST upper_bound = f77_get_upperbound (type);
- fputs_filtered (plongest (upper_bound), stream);
+ fprintf_filtered (stream, "%s", plongest (upper_bound));
}
}
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -1977,7 +1977,8 @@ 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)
+ if (top_level &&
+ (type->code () == TYPE_CODE_REF || type-> code() == TYPE_CODE_PTR))
type = check_typedef (TYPE_TARGET_TYPE (type));
/* Types that have a dynamic TYPE_DATA_LOCATION are considered
@@ -2017,10 +2018,10 @@ is_dynamic_type_internal (struct type *type, int top_level)
|| is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0));
}
- case TYPE_CODE_STRING:
/* Strings are very much like an array of characters, and can be
treated as one here. */
case TYPE_CODE_ARRAY:
+ case TYPE_CODE_STRING:
{
gdb_assert (type->num_fields () == 1);
@@ -2183,11 +2184,15 @@ resolve_dynamic_array_or_string (struct type *type,
ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type));
- if (ary_dim != NULL && ary_dim->code () == TYPE_CODE_ARRAY)
+ if (ary_dim != NULL && (ary_dim->code () == TYPE_CODE_ARRAY
+ || ary_dim->code () == TYPE_CODE_STRING))
elt_type = resolve_dynamic_array_or_string (ary_dim, addr_stack);
else
elt_type = TYPE_TARGET_TYPE (type);
+ if (type->code () == TYPE_CODE_STRING)
+ return create_string_type (type, elt_type, range_type);
+
prop = type->dyn_prop (DYN_PROP_BYTE_STRIDE);
if (prop != NULL)
{
@@ -2533,6 +2538,25 @@ resolve_dynamic_struct (struct type *type,
return resolved_type;
}
+/* Worker for pointer types. */
+
+static struct type *
+resolve_dynamic_pointer (struct type *type,
+ struct property_addr_info *addr_stack)
+{
+ struct dynamic_prop *prop;
+ CORE_ADDR value;
+
+ type = copy_type (type);
+
+ /* Resolve associated property. */
+ prop = TYPE_ASSOCIATED_PROP (type);
+ if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
+ prop->set_const_val (value);
+
+ return type;
+}
+
/* Worker for resolved_dynamic_type. */
static struct type *
@@ -2594,6 +2618,9 @@ resolve_dynamic_type_internal (struct type *type,
case TYPE_CODE_ARRAY:
resolved_type = resolve_dynamic_array_or_string (type, addr_stack);
break;
+ case TYPE_CODE_PTR:
+ resolved_type = resolve_dynamic_pointer (type, addr_stack);
+ break;
case TYPE_CODE_RANGE:
resolved_type = resolve_dynamic_range (type, addr_stack);
diff --git a/gdb/testsuite/gdb.cp/vla-cxx.cc b/gdb/testsuite/gdb.cp/vla-cxx.cc
--- a/gdb/testsuite/gdb.cp/vla-cxx.cc
+++ b/gdb/testsuite/gdb.cp/vla-cxx.cc
@@ -15,6 +15,10 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
+extern "C" {
+#include <stddef.h>
+}
+
struct container;
struct element
@@ -40,11 +44,16 @@ int main(int argc, char **argv)
typedef typeof (vla) &vlareftypedef;
vlareftypedef vlaref2 (vla);
container c;
+ typeof (vla) *ptr = NULL;
+
+ // Before pointer assignment
+ ptr = &vla;
for (int i = 0; i < z; ++i)
vla[i] = 5 + 2 * i;
// vlas_filled
vla[0] = 2 * vla[0];
+
return vla[2];
}
diff --git a/gdb/testsuite/gdb.cp/vla-cxx.exp b/gdb/testsuite/gdb.cp/vla-cxx.exp
--- a/gdb/testsuite/gdb.cp/vla-cxx.exp
+++ b/gdb/testsuite/gdb.cp/vla-cxx.exp
@@ -23,6 +23,12 @@ 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 \\(\\*\\)\\\[variable length\\\]" "ptype ptr, Before pointer assignment"
+gdb_test "print ptr" "\\(int \\(\\*\\)\\\[variable length\\\]\\) 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 +39,6 @@ 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.fortran/pointers.exp b/gdb/testsuite/gdb.fortran/pointers.exp
new file mode 100644
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/pointers.exp
@@ -0,0 +1,143 @@
+# Copyright 2016 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 ![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"
+set test "print intap, not associated"
+gdb_test_multiple "print intap" $test {
+ -re " = \\(PTR TO -> \\( $int \\(:,:\\)\\)\\) <not associated>\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re " = <not associated>\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+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"
+set test "print cyclicp1, not associated"
+gdb_test_multiple "print cyclicp1" $test {
+ -re "= \\( i = -?\\d+, p = 0x0 \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "= \\( i = -?\\d+, p = <not associated> \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+set test "print cyclicp1%p, not associated"
+gdb_test_multiple "print cyclicp1%p" $test {
+ -re "= \\(PTR TO -> \\( Type typewithpointer \\)\\) 0x0\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "= \\(PTR TO -> \\( Type typewithpointer \\)\\) <not associated>\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+
+
+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"
+set test_name "print intap, associated"
+gdb_test_multiple "print intap" $test_name {
+ -re "= \\(\\( 1, 1, 3(, 1){7}\\) \\( 1(, 1){9}\\) \\)\r\n$gdb_prompt $" {
+ pass $test_name
+ }
+ -re "= \\(PTR TO -> \\( $int \\(10,2\\)\\)\\) $hex\( <.*>\)?\r\n$gdb_prompt $" {
+ gdb_test "print *intap" "= \\(\\( 1, 1, 3(, 1){7}\\) \\( 1(, 1){9}\\) \\)"
+ pass $test_name
+ }
+}
+set test_name "print intvlap, associated"
+gdb_test_multiple "print intvlap" $test_name {
+ -re "= \\(2, 2, 2, 4(, 2){6}\\)\r\n$gdb_prompt $" {
+ pass $test_name
+ }
+ -re "= \\(PTR TO -> \\( $int \\(10\\)\\)\\) $hex\( <.*>\)?\r\n$gdb_prompt $" {
+ gdb_test "print *intvlap" "= \\(2, 2, 2, 4(, 2){6}\\)"
+ pass $test_name
+ }
+}
+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\\) \\) \\)"
+set test_name "print arrayOfPtr(3)%p"
+gdb_test_multiple $test_name $test_name {
+ -re "= \\(PTR TO -> \\( Type two \\)\\) <not associated>\r\n$gdb_prompt $" {
+ pass $test_name
+ }
+ -re "= \\(PTR TO -> \\( Type two \\)\\) 0x0\r\n$gdb_prompt $" {
+ pass $test_name
+ }
+}
+set test_name "print *(arrayOfPtr(3)%p), associated"
+gdb_test_multiple "print *(arrayOfPtr(3)%p)" $test_name {
+ -re "Cannot access memory at address 0x0\r\n$gdb_prompt $" {
+ pass $test_name
+ }
+ -re "Attempt to take contents of a not associated pointer.\r\n$gdb_prompt $" {
+ pass $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
--- a/gdb/testsuite/gdb.fortran/pointers.f90
+++ b/gdb/testsuite/gdb.fortran/pointers.f90
@@ -20,21 +20,34 @@ 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
- real, target :: realv
- type(two), target :: twov
+ 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
+ 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
@@ -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/testsuite/gdb.fortran/print_type.exp b/gdb/testsuite/gdb.fortran/print_type.exp
--- a/gdb/testsuite/gdb.fortran/print_type.exp
+++ b/gdb/testsuite/gdb.fortran/print_type.exp
@@ -1,5 +1,6 @@
# Copyright 2019-2020 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
@@ -89,6 +90,7 @@ gdb_test "ptype twop" \
" $int, allocatable :: ivla2\\(:,:\\)" \
"End Type two \\)"]
+
gdb_breakpoint [gdb_get_line_number "After value assignment"]
gdb_continue_to_breakpoint "After value assignment"
gdb_test "ptype logv" "type = $logical"
diff --git a/gdb/testsuite/gdb.fortran/vla-strings.exp b/gdb/testsuite/gdb.fortran/vla-strings.exp
new file mode 100644
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/vla-strings.exp
@@ -0,0 +1,103 @@
+# Copyright 2016 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 ".f90"
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
+ {debug f90 quiet}] } {
+ return -1
+}
+
+# check that all fortran standard datatypes will be
+# handled correctly when using as VLA's
+
+if ![runto_main] {
+ untested "could not run to main"
+ return -1
+}
+
+gdb_breakpoint [gdb_get_line_number "var_char-allocated-1"]
+gdb_continue_to_breakpoint "var_char-allocated-1"
+set test "whatis var_char first time"
+gdb_test_multiple "whatis var_char" $test {
+ -re "type = PTR TO -> \\( character\\*10 \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "type = character\\*10\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+set test "ptype var_char first time"
+gdb_test_multiple "ptype var_char" $test {
+ -re "type = PTR TO -> \\( character\\*10 \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "type = character\\*10\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+
+
+gdb_test "next" "\\d+.*var_char = 'foo'.*" \
+ "next to allocation status of var_char"
+gdb_test "print l" " = \\.TRUE\\." "print allocation status first time"
+
+
+gdb_breakpoint [gdb_get_line_number "var_char-filled-1"]
+gdb_continue_to_breakpoint "var_char-filled-1"
+set test "print var_char, var_char-filled-1"
+gdb_test_multiple "print var_char" $test {
+ -re "= \\(PTR TO -> \\( character\\*3 \\)\\) $hex\r\n$gdb_prompt $" {
+ gdb_test "print *var_char" "= 'foo'" "print *var_char, var_char-filled-1"
+ pass $test
+ }
+ -re "= 'foo'\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+set test "ptype var_char, var_char-filled-1"
+gdb_test_multiple "ptype var_char" $test {
+ -re "type = PTR TO -> \\( character\\*3 \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "type = character\\*3\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+gdb_test "print var_char(1)" " = 102 'f'" "print var_char(1)"
+gdb_test "print var_char(3)" " = 111 'o'" "print var_char(3)"
+
+
+gdb_breakpoint [gdb_get_line_number "var_char-filled-2"]
+gdb_continue_to_breakpoint "var_char-filled-2"
+set test "print var_char, var_char-filled-2"
+gdb_test_multiple "print var_char" $test {
+ -re "= \\(PTR TO -> \\( character\\*6 \\)\\) $hex\r\n$gdb_prompt $" {
+ gdb_test "print *var_char" "= 'foobar'" "print *var_char, var_char-filled-2"
+ pass $test
+ }
+ -re "= 'foobar'\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+set test "ptype var_char, var_char-filled-2"
+gdb_test_multiple "ptype var_char" $test {
+ -re "type = PTR TO -> \\( character\\*6 \\)\r\n$gdb_prompt $" {
+ pass $test
+ }
+ -re "type = character\\*6\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
diff --git a/gdb/testsuite/gdb.fortran/vla-strings.f90 b/gdb/testsuite/gdb.fortran/vla-strings.f90
new file mode 100644
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/vla-strings.f90
@@ -0,0 +1,39 @@
+! Copyright 2016 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 vla_strings
+ character(len=:), target, allocatable :: var_char
+ character(len=:), pointer :: var_char_p
+ logical :: l
+
+ allocate(character(len=10) :: var_char)
+ l = allocated(var_char) ! var_char-allocated-1
+ var_char = 'foo'
+ deallocate(var_char) ! var_char-filled-1
+ l = allocated(var_char) ! var_char-deallocated
+ allocate(character(len=42) :: var_char)
+ l = allocated(var_char)
+ var_char = 'foobar'
+ var_char = '' ! var_char-filled-2
+ var_char = 'bar' ! var_char-empty
+ deallocate(var_char)
+ allocate(character(len=21) :: var_char)
+ l = allocated(var_char) ! var_char-allocated-3
+ var_char = 'johndoe'
+ var_char_p => var_char
+ l = associated(var_char_p) ! var_char_p-associated
+ var_char_p => null()
+ l = associated(var_char_p) ! var_char_p-not-associated
+end program vla_strings
diff --git a/gdb/typeprint.c b/gdb/typeprint.c
--- a/gdb/typeprint.c
+++ b/gdb/typeprint.c
@@ -565,6 +565,24 @@ whatis_exp (const char *exp, int show)
printf_filtered (" */\n");
}
+ /* Resolve any dynamic target type, as we might print
+ additional information about the target.
+ For example, in Fortran and C we are printing the dimension of the
+ dynamic array the pointer is pointing to. */
+ if (type->code () == TYPE_CODE_PTR
+ && is_dynamic_type (type) == 1)
+ {
+ CORE_ADDR addr = value_as_address (val);
+
+ if (addr != 0
+ && type_not_associated (type) == 0)
+ {
+ type = copy_type (type);
+ TYPE_TARGET_TYPE (type) = resolve_dynamic_type (TYPE_TARGET_TYPE (type),
+ {}, addr);
+ }
+ }
+
LA_PRINT_TYPE (type, "", gdb_stdout, show, 0, &flags);
printf_filtered ("\n");
}
diff --git a/gdb/valops.c b/gdb/valops.c
--- a/gdb/valops.c
+++ b/gdb/valops.c
@@ -1554,6 +1554,18 @@ value_ind (struct value *arg1)
{
struct type *enc_type;
+ if (type_not_associated (base_type))
+ error (_("Attempt to take contents of a not associated pointer."));
+
+ CORE_ADDR addr = value_as_address (arg1);
+
+ if (addr != 0 && is_dynamic_type (base_type))
+ {
+ base_type = copy_type (base_type);
+ TYPE_TARGET_TYPE (base_type) =
+ resolve_dynamic_type (TYPE_TARGET_TYPE (base_type), {}, addr);
+ }
+
/* We may be pointing to something embedded in a larger object.
Get the real type of the enclosing object. */
enc_type = check_typedef (value_enclosing_type (arg1));
@@ -1570,8 +1582,7 @@ value_ind (struct value *arg1)
else
{
/* Retrieve the enclosing object pointed to. */
- base_addr = (value_as_address (arg1)
- - value_pointed_to_offset (arg1));
+ base_addr = (addr - value_pointed_to_offset (arg1));
}
arg2 = value_at_lazy (enc_type, base_addr);
enc_type = value_type (arg2);
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